MadModder
Gallery, Projects and General => Project Logs => Topic started by: Rob.Wilson on April 25, 2011, 05:29:49 AM
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Hi LADS :wave:
I thought for a change i would have ago at build an engine , instead of messing around fixing up the shop and building furnaces ,, i fancy for a change something small ,from bar stock ,,,,,,,,was going to be a Webster but then i remembered Chris has one on the go right now ,, so it will be a Kerzel engine .
The plans are free here ,,, http://www.floridaame.org/GalleryPages/g1h0106.htm ,,looking over the drawings it looks a well thought out engine ,,,,,,,,,,with the size of this engine being small i may have ago at making some of the parts on my small CNC mill ,,,,So far the mill has just sat there on the end of the bench doing nowt :whip:
Rob
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Looking good Rob, at last you have something to do :lol: :lol: :lol:
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Hi Rob, you should be a Webster, it`d show people how it should be done rather than my poor attempt :doh:
I looked at the Kerzel engine, looks a nice design but I must admit I then got consumed by the Nemett NE15s but choose the Webster as it is easier. http://modelenginenews.org/cardfile/images/ne15s1.jpg
Good luck with your build, I look forward to reading more.
Chris
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That really looks to be a nice compact engine to build Rob.
I looked at it a few years ago, then dropped the idea when the Westbury Whippet came along my way. I wish I had done that one instead of the Whippet, as that sits unfinished (but running) on a top shelf.
Keep us well posted.
John
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Hi Rob, I took a look at the link you posted, and that looks like a very nice build to set about. I will be following closely, as it looks like one I'd like to build too. This should turn out to be a beauty when you're done. :beer: Cheers, Jack
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Nice little engine that is for sure. This will be a good project :headbang:
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Thats a nice little-un Rob, by the looks of it you could cast some of the parts up (water jacket) if you were of a mind.
Look forward to following the build especially your CNC parts.
Stew
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That looks a bit nice Rob! :thumbup:
Looking forward to watching your progress..... (http://www.dogproductshop.co.uk/smile/winking/winking0001.gif) (http://www.dogproductshop.co.uk)
Good luck! :wave:
David D
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Looking good Rob, at last you have something to do :lol: :lol: :lol:
Cheers Benni :poke: :poke: :)
Hi Rob, you should be a Webster, it`d show people how it should be done rather than my poor attempt :doh:
Chris
Hi Chris ,,,,,,,,,,,, nothing wrong with your engine build mate , your doing a fine job :thumbup:,,,,,,,, any way get your finger out :whip: :whip: :whip: :)
That really looks to be a nice compact engine to build Rob.
I looked at it a few years ago, then dropped the idea when the Westbury Whippet came along my way. I wish I had done that one instead of the Whippet, as that sits unfinished (but running) on a top shelf.
Keep us well posted.
John
Hi John ,,,, the engine looks well proportioned and as you say compact ,, :med: ,,,,,,,,,,, Westbrury Whippet ,,, have not come across that engine ,,photo please :poke: :)
do you have any plans to finish it :dremel:
Hi Rob, I took a look at the link you posted, and that looks like a very nice build to set about. I will be following closely, as it looks like one I'd like to build too. This should turn out to be a beauty when you're done. :beer: Cheers, Jack
Hi Jack ,,,,,,,,,,,,, i just hope i can do it justice and i get a good runner :dremel:
Nice little engine that is for sure. This will be a good project :headbang:
Cheers Eric ,,,,,,,,,, You not fancy building one :poke: :poke: :poke: :poke: :poke: :)
Thats a nice little-un Rob, by the looks of it you could cast some of the parts up (water jacket) if you were of a mind.
Look forward to following the build especially your CNC parts.
Stew
Hi Stew ,,,,,,,,,, Staying away from castings on this one ,,,, building it as close to the drawings as possible :med:
That looks a bit nice Rob! :thumbup:
Looking forward to watching your progress..... (http://www.dogproductshop.co.uk/smile/winking/winking0001.gif) (http://www.dogproductshop.co.uk)
Good luck! :wave:
David D
Thanks David :beer:
Suppose i better get things moving
Rob
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Rob
The Whippet was a w/cooled SV engine. In those days long ago when I faffed with model boats, I seem to recall one in a large cabin cruiser model.
Also, but not sure, there was a 2-cyl SV w/cooled engine from ETW..
Build a Bentley BR1. You 've got nowt else to do now you've done with decorating ... :lol: :lol:
Got the book. No chance of doing the engine though ... :(
Dave BC
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Were off :D
Probably way way to many photos and stuff thats all been seen before :doh: any way here is how i go about doing stuff :)
First off started with the base ,, page one and as good a place to start as any were ,, a length of 2"x 3/4" ally bar was machined to 3 3/4" long , the plans call for it to be profiled to form two up stands ,, i deviated slightly from the design just so i could do it in one set up .
I am using a 1/4" radius cutter for the job in the HZ mill ,, working from one edge as a datum , and using the dials for position .
finding the edge using a feeler gauge
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030289.jpg)
Then the first section was machined
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030297.jpg)
then i moved across machining the other areas , leaving the two up stands
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030300.jpg)
After machining with the radius cutter there was left a raized section in the middle , this was then machined flat
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030302.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030304.jpg)
The base just needs marking out and drilled for the fixings
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030328.jpg)
Next the cylinder body ,, page three ,,, this calls for a block of ally to be machine up nice and square to start with .
The sawn block was placed in the machine vice and set up square using a DTI on the vertical side so that the upper face will be machined square to it .
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030308.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030309.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030311.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030316.jpg)
Now that i have that face flat and square the block was reposition with that face down on the vice , i use my hight gauge all over the shop for measuring ,not just marking out .
Setting the gauge to zero on the bottom of the vice , using that as a datum , then adjusting it to read 57.91mm the hight the block needs to be machined to , then zero it in that position .
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030322.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030323.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030324.jpg)
A light skim was then taken off the block and the block measured .
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030325.jpg)
2.34mm to come off
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030326.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030327.jpg)
With the cylinder block milled to size ,its time to move to the lathe , the centre for the bore was marked out and lightly centre punched , now the block is set up in the four jaw chuck ,using some offcuts of ally so that the jaws dont mark the block ,, i do this flat on the bench so that i am not fiddling about trying to hold everything in place , using the Mark 1 eyeball to get things in the approximate position .
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030330.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030331.jpg)
Then just fit the chuck to the lathe , using a spring loaded centre in the centre punch mark the job is then clocked in .
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030332.jpg)
Next ,,,,,,,,,,,,,, ( i am going on a tad ) ,,,,,,,,, drilled and bored to size .
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030333.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030338.jpg)
On the last few cuts the tool is ran through at the same setting to remove any tapper in the bore ,, i use inside calliper or bore gauges to measure the bore at each end , both need a bit of practice to get the feel of ,, but well worth doing ,,, much better than using those pointy things on verniers .
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030339.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030340.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030341.jpg)
With the bore sorted next comes an under cut section to allow water around the cylinder , i am using a tool i made for another project , this is a length of 1/4" HSS heated up and bent , then the cutting edges were ground .
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030344.jpg)
The tool was set square to the job using the back face of the block .
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030345.jpg)
Using the lathe dials the position of the under cut was locate and machined , and also the recess for the cylinder liner .
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030346.jpg)
Next using a 6mm button tool the front face was machined , a smaller radius would be better , but the 3mm radius the tool will leave matches a milling cutter i will use on the rest of the job .
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030349.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030350.jpg)
Thats it for now ::)
Rob
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I reckon it will be running by next monday :bow: :bow: :bow: :bow:
(pleased to see you are still using the boxford) :D :D :D :D
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:bugeye: Good going mate :bow: - you're sure not wasting time 'round toon on this one :D
Looking forward to the rest - now mind you don't slow up and get distracted with decorating again :palm:
Kind regards, Arnold
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Looking good Rob, nice to see you doing something :lol: :lol:
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Holy cr@p Rob. You aren't wasting time are you??? I would still be thinking about it!
Eric
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At the rate you're going, this is going to be done in your second post, Rob. No grass growing under your feet,
buddy. Looking great so far!
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Hi rob
thats sure looking great
on my Kerzel, I made the bobin center wider to get more clearance for the lockout lever (from memory 4mm) so you may find it helpfull when u make the crank to leave it a little long that side,If you dont need it you can cut it off later :thumbup:
mine has only the oiler left to make and at this stage only runs for 5 seconds or so, probably due more to my poor ignition system than anything else.
maybe you will inspire me to get of my bum and get it done :beer:
Pete.
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You certainly got stuck into that Rob, :thumbup:
Great set of pics, I knew I'd enjoy this build.
Stew
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Well...... That took off like a rocket! :bugeye: :D
David D
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Goodness me Rob, that took off rather quickish, I didn't have time to reply to your question.
Here it is, my Westbury Whippet, still on it's test stand and after having a couple of tanks of fuel thru it (well over an hours almost non stop running). It's a single cylinder, wet sump, water cooled four stroke side valve engine.
And no, at this time I hate the damned thing, the castings were the worst I have ever handled, but maybe later I will come to like it again, and maybe finish it off.
John
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Cheers for looking in Lads :thumbup:
Rob
Build a Bentley BR1. You 've got nowt else to do now you've done with decorating ... :lol: :lol:
Got the book. No chance of doing the engine though ... :(
Dave BC
:lol: :lol: :lol: :lol: :lol: :lol: you have more spare time than i ,,,, now your spuds are in :poke: :poke: :poke:
Hi John
I must have missed that engine when at your shop :scratch:,,,,,,,,,,, looks an interesting engine to build ,, i will have a look and see if i have the build artical .
I hope one day you get round to finishing it ,,, would be good to see it running :med:
Rob
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Rob,
What put me off was the quality of the castings, and even Hemingway can't get them right after taking them over from Woking Precision. They really are almost unuseable as they come.
They tried to get one well known website to make a pair, and it has died after getting about 2/3rds into it, so I suspect they hit the same problems I did. At least, mine now runs OK.
I think we have a set of plans knocking about somewhere.
John
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Dam shame about the castings John
Were they no were near size ?
Rob
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Looks like I better get down the post office with your corian in a hurry. That slab mill soon reduces things to swarf.
J
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Wow I stayed in bed a little later today, good job the phone rang, I would have missed it all. :) :) :)
DaveH
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Missed wot ?
John S.
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A bit more whittling of the cylinder block tonight ,, bored out and under cut the section for the water tank .
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030352.jpg)
Then back to the mill ,,, removed some of the excess material to from the tank
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030353.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030354.jpg)
Used a end mill with a 3mm rad to form the tank top
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030355.jpg)
Milled the tank hole square
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030357.jpg)
Added a rad to the top edge of the tank
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030359.jpg)(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030358.jpg)
next a slot is milled to join the tank to the water jacket
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030361.jpg)(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030360.jpg)
And thats it for tonight
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030365.jpg)
Rob
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Looking great Rob :bow: :bow: :bow: :bow:
I bet this is a plesant change from grinding and welding :D :D
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Your'e the man :bow: :bow: :bow:
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Gee Rob. I started looking like an engine lickity split. Looks good, too!
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looking fantastic rob
I loved making the Kerzel and it so much fun to see someone else do it too
and its easy to see its gunna be great :D
Pete
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Rob
Great job you are doing on the Kerzel Rob. There is no such thing as too many photo's although it can be a pain taking them and doing the write up later. I'll be watching through to the end as usual. :D :D
Cheers :beer:
Don
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Hi Rob
u inspired me to get back to my Kerzel mate
here is the first run vid before tuning, I know its running like a hairy goat, but a bit of a tune will fix that another day :thumbup:
http://www.flickr.com/photos/61672544@N06/5661014990/
Pete
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Nice :clap: :clap:
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Thanks Lads :thumbup: ,,,,, pleased there is not too many photos ,, :)
Dean ,, it must be getting near that time of year when you do an engine build :poke: :)
Pete :clap: :clap: :clap: :clap: :clap: :clap: ,, great to see a runner :thumbup: strange name for an engine :scratch: ,, i see you have extended the crank so a pully could be fitted ,, i had planning to do the same :dremel: ,,,,, I noticed your under fuel tank arrangement :med: ,,,,, i like that idea ,, may do likewise to my engine .
Rob
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Hi Robb, good to see you making progress so well, and quickly, you should have er running in no time at all! Looking forward to this whole build, so far, very nice work. I'm glad I got the chance to see one running too, thanks to he who posted his old build, kind of brings life into the picture. :nrocks: :beer: Cheers, Jack
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Cheers Jack :beer: ,,,,,,,,,,,,,,, i am getting there :)
A bit more tonight ,,,,,, :dremel: the cylinder block needs a bit more profiling ,, job for the R/T .
The block was held in a 4 jaw chuck and the bore clocked in to the R/T axis .
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030366.jpg)
then one side was clocked in to the mill X axis , this is so the head bolt holes and radiussssss will be in the correct position , making note of the R/T dial
reading.
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030368.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030367.jpg)
Then finally the job was clocked into the mill spindle ,,,,,, zeroing the mill dials .
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030369.jpg)
Now we no were the job is in relation to everything ,, time to start milling :dremel: , first off the head bolt holes were spotted ,
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030370.jpg)
Next the 180 deg radius was milled on the lower section of the block
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030372.jpg)
Then the job was spun around and the other side milled
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030373.jpg)
Thats it for tonight :) must admit this is a fun engine to build :ddb: :ddb: :ddb:
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030374.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030375.jpg)
Rob
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I just love to see your'e work, all the time I'll learn somethong, thanks for showing Rob :thumbup: :thumbup:
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love this post
keep up the great work
and remember if u make the crank on the regulator side a little longer for lockout clearence, u may be very glad u did :wave:
pete
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Nice to see a rotary table being used properly...... :thumbup:
(As in.... Finding centre, and keeping track of where the cutter is, in relation to r/t positions). :scratch:
Well..... I know what I mean! ::)
David D
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That's looking great Rob, the milling of the radii is a definite plus, and gives it character. With that size hopper, it should run for about forever without overheating :ddb: :headbang: how big is that block before you machine it all out? I've got to make sure I've got enough raw stock for when I get to it. Great build, and there's never too many pictures :lol: :beer: Cheers, Jack
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Nice work, Rob. Your rotary table / 4 jaw chuck set up looks identical to mine.
Chuck
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A question, why is it call a Hit n Miss Engine :zap:
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Cheers lads :beer: :)
That's looking great Rob, the milling of the radii is a definite plus, and gives it character. With that size hopper, it should run for about forever without overheating :ddb: :headbang: how big is that block before you machine it all out? I've got to make sure I've got enough raw stock for when I get to it. Great build, and there's never too many pictures :lol: :beer: Cheers, Jack
Jack ,, a lump 1 1/2" x 2 1/2" x 2 3/4" will do the cylinder block ,,,, fairly small engine :med:
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030386.jpg)
and here is a shot next to Johns water jacket ::)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030387.jpg)
A question, why is it call a Hit n Miss Engine :zap:
Hi Benni ,,,,,,,,,,,,,, its a hit and miss ,, because when the engine is not under load ,, it only fires now and then ,, Fire /hit ,, free wheel for a few revolutions /miss
<iframe width="425" height="349" src="" frameborder="0" allowfullscreen></iframe>
And how is you engine coming along Benni :poke: :whip:
Rob
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More photos of tonight's efforts :dremel:
Made a start on the bearing blocks ,, a bit more 4 jaw chuck work .
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030376.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030377.jpg)
I used larger than required stock so the was more to get hold of in the 4 jaw .
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030379.jpg)
the excess on the back face was milled of with a fly cutter .
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030380.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030382.jpg[/img
and the hight reduced to 1 inch
[img]http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030384.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030384.jpg)
Still a bit of work to do to them ,,, thats for tomorrow as we have a day off work in the UK ,,,,,,,,dont you just love the royal family :ddb: :ddb: :ddb: :ddb: Shop time :)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030385.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030388.jpg)
Rob
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Rob,
That's looking rather splendid :thumbup: :thumbup: :thumbup:
DaveH
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lovely to watch :nrocks:
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What the.....
I`ve only gone out of thread for a day and you have nearly built it. Man, I really am slow :bang: Nice build and please please, as many pictures as you can, there are never too many especially when your trying to follow them! Some really good setups and you horizontal mill looks to get some action. Just curious, what determines whether you choose to use your horizontal setup or a standard vertical? - I know there is always more than one way "to skin a cat", but just curious how you personally decide.
Chris
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Great to see you making an engine rob :thumbup: Beautifully crafted from solid bar, I'll definitely be watching this one - there are so many good build logs on here I'll have no time to do anything of my own :lol:
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:clap: :clap: Good going Rob :thumbup:
:lol: Shop time's definitely better than watching the royal wedding!
:beer:, Arnold
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:clap: :clap: Good going Rob :thumbup:
:lol: Shop time's definitely better than watching the royal wedding!
:beer:, Arnold
Royal Wedding ?? What's that then Arnold ???
Not missed something have I??
Dave BC
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Royal Wedding ?? What's that then Arnold ???
Not missed something have I??
:lol: :lol: Nowt much mate - seems to be a funny sort o' tradition in ol' Blighty with wooden coaches with shiny brass bits going down the streets and coppers hanging 'round everywhere... Just a regular sort o' day from what I can gather :D :D
:beer:, Arnold
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Arnold
Horses? Carts? Bits of Brass? Copper ...... Aaaaaaaah! Gotcha .... :thumbup:
Steptoe & Son ... yeah, pity it's not on now .. bugger. Did miss it then ... :(
Dave BC
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Looking nice Rob!! :thumbup:
Eric
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Nice work Rob. :thumbup: :thumbup:
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Kenneth
It a wobbler ( sprung loaded center ) held by the TS and the dial gauge is used to check the run out )
Basically its a centre finding device to set thing running true
But I bet Rob can explain it better
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Hi Ken
I can see how the photo is misleading :doh: ,,,,,,,,,,,,,, i had done a video to show it in operation to :( ,,,5 minutes until upload complete .
Rob
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Just curious, what determines whether you choose to use your horizontal setup or a standard vertical? - I know there is always more than one way "to skin a cat", but just curious how you personally decide.
Chris
Hi Chris ,,,,,,,,,,,, i mainly just use the HZ for profile cutters , gear cutting and deep slots :dremel: :)
Rob
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I am just as crap with video as i am with photos ::) ,,,,, but you get the idea :dremel:
Rob
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This was wery intressting thanks for showing Rob.
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Wow, engines coming on fast Rob W :bugeye: Liked the video, did you make the wobbler yourself?
Here's a link for anybody who fancy's making one, its listed under Lathe related stuff http://members.optushome.com.au/terrybrown/welcome.html there is some other good stuff on the website too.
Cheers
Rob (slowcoach) :thumbup:
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Cheers Benni ,,,,,,,,,,,,,, pleased you liked the video :dremel:
Hi Ken ,,, i may just do that ,,,,,,,,, i will have a bit more practice with the camera first see if i can make a better job of it :doh: and fined a voice over :lol: :lol: :lol:
Hi Rob ,,,,,,,,,,,,,Yep made it yonks ago when i was a lad ,,,,, :dremel:
Rob
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A bit more progress :dremel:
The main bearing caps ,, a bit of ally bar was milled up to the required width and thickness ,but longer than needed and a centre point marked on each end for the radius .
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030389.jpg)
Then the ends were milled to form the flat section.
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030390.jpg)
The bar was mounted on the R/T and clocked into the pre marked points ,,, same as method as with the 4 jaw ,just vertical ,centre fitted to mill spindle and R/T clocked into spindle .
the rad was milled on each end .
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030392.jpg)
The bar was held vertical in a tool makers vice , then held in the mill vice .
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030402.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030395.jpg)
Fined the centre
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030397.jpg)
then the edge
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030398.jpg)
Working from there move in the correct distance for the first hole , and using a slot drill , mill a flat .
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030403.jpg)
centre drill
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030404.jpg)
and drill
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030405.jpg)
move to the other hole using the dials to get the position and repeat .
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030401.jpg)
do same to other end of the bar ,, then cut the caps off the stock leaving some to machine up .
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030408.jpg)
Then mill to size.
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030409.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030410.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030411.jpg)
Now the main bearing supports need milling up ,, i tilted the bed of the mill to do this , but you could just mount it in the vice at the correct angle .
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030412.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030413.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030414.jpg)
Then the holes were drilled and taped for the cap screws wile still in this position ,,, after finding the centre line and working from this point .
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030420.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030423.jpg)
Thats all for now lads
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030424.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030425.jpg)
Rob
-
You are definitely making it look too easy Rob.
Next thing you know there will be dozens of these being made. So when you cut the gears, make up some long bar lengths, and cut up extra sets for selling on to keep everyone happy.
Very nice setups and explanations BTW.
John
-
Coming on nicely Rob
Total class as usuall :thumbup: :thumbup: :thumbup: :thumbup:
-
Nice work Rob, your'e the man :clap: :clap: :clap:
-
You are definitely making it look too easy Rob.
John
I was going to say the same thing. Carry on. :thumbup:
Bernd
-
Top class work Rob
:thumbup:
Stew
-
Rob.
Very nice work..... Very nicely explained! :clap: :thumbup:
David D
-
Brilliant work, it does look rather easy to make this engine though Rob, it's a doddle - you should have picked something more challenging :poke: :lol:
-
Cheers LADS :thumbup:
Moving along ,, next up the main bearing brackets need boring ,, a small angle plate was clocked on the mill
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030426.jpg)
And the base fixed to it
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030427.jpg)
Then drilled and bored
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030430.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030432.jpg)
next up using the mill dials ,, the position of the hole for the timing gear shaft was located , drilled and reamed 1/4" ,, i am deviating from the drawings a bit here .
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030433.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030440.jpg)
Cheers Rob
-
Rob it is a work of art :clap: :clap: :clap:
-
Cheers Benni :D
Next the crank ,,,,,,,,, (http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030434.jpg)
Several hours later my saw had cut through the lump of steel ::)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030437.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030441.jpg)
the centres were marked out on each end and drilled
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030443.jpg)
next a slot was milled to remove most of the material to form the big end
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030442.jpg)
This was then turned between centres , starting with a stiff slotting tool to remove most of the material .
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030447.jpg)
Then a thinner tool was used to turn the journal
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030450.jpg)
With that done ,, i need a spacer to go between the crank webs ,, so the crank will not bend when the pressure from the tail stock is applied ,,, there are many ways of doing this ,,,this is my way , turn up a length of steel to be a good fit between the webs , a slack fit is no good ,,,
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030451.jpg)
If its too tight when a parallel is laid across ,,it will rock ,, so a bit more will need to be machined off .
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030453.jpg)
Drill and tap one end and part off leaving a top hat ,position in line will main journals centres , hold in place with screw and washer
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030454.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030455.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030456%7E0.jpg)
Rob
-
Ahhh my favourite post is back!! :bugeye:
what are u doing with the gear shaft rob?
are u using custom gear sizes?
I really like your way of making the web spacer, and u will see that, when it comes time for my rattler crank :clap: :wave:
Pete
-
I am lost for words :bow: :bow: :bow:
This is real quality stuff
-
As ever, some interesting techniques for me to learn from, as well as a lovely build :bow:
Boz
-
That is a really nice way of keeping the pressure from bending the crank using that spacer.
Just wondering, I noticed you drilled right through the two bearing supports in position. When I built my Stuart I was encouraged not to do this because they may deflect off centre as the drill went through. I guess because you were boring you could take a very light final cuts and run it in and out so that you knew you wouldn`t get this deflection - is that right?
Chris
-
"Several hours later"..... : ) That's a funny bit about the saw, Rob.
Things are looking great, and you're showing some solid machining practice. Enjoying your thread here, mate!
-
Cheers lads :D :thumbup:
what are u doing with the gear shaft rob?
are u using custom gear sizes?
Pete
Hi Pete ,,,,,,,,,,,,,,,,,,,,,, Nothing as exciting ,, just fixing the shaft a slightly different way :)
Just wondering, I noticed you drilled right through the two bearing supports in position. When I built my Stuart I was encouraged not to do this because they may deflect off centre as the drill went through. I guess because you were boring you could take a very light final cuts and run it in and out so that you knew you wouldn`t get this deflection - is that right?
Chris
Hi Chris ,,,,,,,,,,,,,,, you got it ,i took it easy drilling ,, leaving plenty of material to bore to final size :dremel:
Well i just about finished the crank ,, still needs some de burring , a couple of key ways milled and cut to length :dremel:
Milled off the excess material ,,, to lazy to use a hacksaw ::)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030457.jpg)
Mounted between centres and ruff turned
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030460.jpg)
Then finish turned to size
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030461.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030468.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030471.jpg)
Cheers Rob
-
Still a master pice Rob. :clap: :clap:
-
Beautiful crank mate :bow: :bow:
And it's good to see you giving the Myford a bit of a workout for a change :D - I see the TTA is mounted conveniently as a magnetic base stand :lol: :lol: :lol:
Kind regards, Arnold
-
that is a great finish you have there Rob :bow: :bow: :bow:
I bet you did not use emery tape to achive it ether
-
Very nice work on that crankshaft. I've made a few and they are not easy. Don't think any of mine turned out quite as nice as yours!
Chuck
-
Hi Rob
That crank is so nice buddy, Im glad u left it a little long on the reg side because, I found an easy fix for the lockout lever's
interference issues was to make a wider bobbin.
That just moves everything out of the way :thumbup: :clap:
your kerzel is going to be a rare thing of beauty Rob
Pete
(Kerzel Club member)
-
Crackin' work Rob! :clap: :thumbup:
David D
-
Hi Rob,
A masterfull piece of work :thumbup:
very nice :clap:
DaveH
-
Hi Rob, that is truly a master's bit of work on that crank, and I am going to be following your demonstration of the proper way to set up to turn the shafts on my next crank. I've got three pieces of 1 and 3/4 round stock each with three reamed holes in them, which have been getting progressively thinner as each time they go together with pins and shafts, they get further out of true. :hammer: :headbang: It is time for them to be scrap, and a proper crank assembled, and you have shown the way. I've seen many variations on the method, but your description of finding the exact diameter of the piece holding it in alignment is the best way I've ever seen and I will be using it in my next build. :bow: This engine should be a real runner when you're finished. :beer: Cheers, Jack
-
I have just had a propper look & feel of that crank :D :D :D :D
The pictures dont do it justice :bow: :bow: :bow: :bow:
-
Hi Rob,
Thanks for everything you have shown here.
The pictures are so clear and instructive - truly a "master class" in techniques - much to learn from.
Very best wishes
Peter
-
Wow Rob - wonderful work, I have had another lesson given by the master! :clap:
-
Rob, I'm going through withdrawls... :poke: I feel like a junkie that needs his "Rob fix"... <tee hee> I hope all is well with you :wave:
Sorry I'll edit it this, this is Kenneth from my machine upstairs...
-
Hi Lads , many thanks for the comments :thumbup:
The shop time has been a bit slow passed two weeks :( ,,,,,, but i have managed a bit this weekend :ddb: :ddb: :ddb: not allot but still moving on .
Made the main bearings .
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030508.jpg)
Slapped a bit 1mm stainless plate on the Denford cnc mill and out popped a couple of name plates ,,,,,,, well i did have to make an engraving cutter , draw it and then sort out the G code ,,,,,,,, and wait 58 minutes for it to go through 12503 lines of code :coffee:
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030503.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030518.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030519.jpg)
And cheers to MR Bluechip for the dam small 10 BA screws :beer:
Rob
May have a bash at the flywheels the morn :dremel:
-
K - E - R- Z - E - L. ?
Funny name for a frog ? :scratch:
-
K - E - R- Z - E - L. ?
Funny name for a frog ? :scratch:
:lol: :lol: :lol: :lol: :lol: funny :coffee:
you not answer your PMs now :poke:
Rob
-
May have a bash at the flywheels the morn :dremel:
And theres me been waiting 2 weeks to see how the spark plug turns out ::)
Good to see some more progress
J
-
I thought you would have lined the slots up on the 10 ba screws :lol: :lol: :lol: :lol: :lol:
Joking apart thios is total class :bow: :bow: :bow: :bow:
-
Quite right John, really attractive engine .. :thumbup:
Wonder how long before he notices you've nicked the piston and con-rod for yours ???
Dave BC
-
WOW
that name plate is an inspiration :drool:
I am sooooo wanting to be able to do that :drool: :drool: :drool:
Pete :wave:
-
That name plate lookss smashing Rob, did you make two one for each side ?.
Stew
-
Name plate does look good BUT I've never seen a hit & miss with a name plate like that, usually transfers on the side of the hopper and a small plate elsewhere giving details like HP and serial mumber and also held with roundheads
I have some spare 12BA roundheads and some JB weld to fill the old holes if you want :D
Jason
-
Very nice work indeed Rob.
Makes me want to get back into the shop for a few hours fiddling.
John
-
Morning Lads ,,,,,,,,, :D
Thanks for the comments :thumbup:
Stew ,,,,,,,,,, look at the photos :poke: :lol:
Jason ,,,,,,,,,,,, :lol: :lol: :lol: never seen a Hit n Miss with socket cap screws holding the main bearing caps ,,, this is new age stuff :med: ,,,,, Transfers i cant make them :doh: no need for Jib weld only take 2 hours for the mill to make new ones :)
Cheers Rob
-
never seen a Hit n Miss with socket cap screws holding the main bearing caps
And I thought they were just while you were building it, to be replaced by studs, washers and single chamfer nuts, proper job :thumbup:
Jason (who has just been making some of these (http://i3.quinbyhardware.com/6103410.jpg) for 3/32" pipe so his engine looks right).
J
-
never seen a Hit n Miss with socket cap screws holding the main bearing caps
And I thought they were just while you were building it, to be replaced by studs, washers and single chamfer nuts, proper job :thumbup:
Jason (who has just been making some of these (http://i3.quinbyhardware.com/6103410.jpg) for 3/32" pipe so his engine looks right).
J
Should be no problem I have made them for 1/16 od pipe along with nipples and union nuts its 3/32 AF if your so minded
These were for the oil lines and steam lines for the drain cocks ( steam operated )
-
And I thought they were just while you were building it, to be replaced by studs, washers and single chamfer nuts, proper job :thumbup:
J
Not on this engine build Jason :lol: :lol: :lol: ,,,,,,,,10ba screws make me go boss eyed ::)
Well i did get into the shop today for a few hours ,, decided to make the cylinder liner .
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030528.jpg)
And then made a start on the cylinder head :dremel:
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030529.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030530.jpg)
Still needs a few more holes to be poked in it ,save those for tomorrow night , and i need to decide what size i will be making the spark plug :zap:
Cheers Rob
-
Is that it Rob? I was expecting something special! :jaw: :)
Bloody hell! Makes what I've been working on look like a kids toy! ::)
One day I might advance enough? need to make myself a foundry first though :ddb:
Seriously, very nice work :clap: you wrote 12,000+ lines of code!!? you must be mental! :loco: Looks damn nice though. (fancy doing a few "RS" ones? :lol: )
Ralph.
-
you wrote 12,000+ lines of code!!? you must be mental! :loco: Looks damn nice though. (fancy doing a few "RS" ones? :lol: )
Ralph.
Cheers Ralph ,,,,,,,,,,,,,,,,, :lol: :lol: :lol: :lol: :lol: nope i did not write the lines of code ,,,,, CAM program did that, :dremel:
Rob
PS ,,,,move your butt and get that foundry setup :poke: :poke: :poke: :D
-
Fair enough, it did seem a little excessive! :lol:
I'd best get a few other things finished first.... Like my long awaited house! ::)
Ralph.
-
Rob, this little engine just gets more and impressive!
-
Cheers AL :beer:
A bit more work on the engine tonight :dremel: , repositioned the R/T to HZ and drilled the inlet and exhaust ports .
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030533.jpg)
Chopped the head off from the stock and skimmed up the face .
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030535.jpg)
Just needs the valve seats cutting ,, i will probably make up a seat cutter for the job .
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030538.jpg)
Cheers Rob
-
looking great Rob
:thumbup:
-
Rob,
Wondering if you ever sleep. :scratch:
Really very nice and excellent machining :clap: :clap: :clap:
Go to bed and give me a rest :D :D :D
:beer:
DaveH
-
Fantastic Rob :clap: :clap: :clap:
-
Developing beautifully, Rob! :clap: :clap: :thumbup:
David D
-
Wow Rob, that is great.
Only 300 more years of practise and I might come close to that! Just watch out :lol:
Pekka
-
Really excellent, Rob - something for us mere mortals to aspire to.
Peter
-
Thanks Lads and cheers for looking in :headbang:
A wee bit progress today , turned up a couple of brass valve guides :dremel:
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030552.jpg)
Next was a couple of stainless valves ,, i decided to turn them from 1/4 bar instead of the described method in the drawings .
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030559.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030560.jpg)
Then a couple of valve spring keepers also in stainless
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030561.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030563.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030566.jpg)
Time for tea :med:
Rob
-
Rob,
Some nice turning there. :thumbup:
Especially the stainless. :clap: :clap: :clap:
DaveH
-
:bow: :bow: Well done Rob :bow: :bow:
Great photos as well mate :thumbup: ; you'd better blur them a bit else someone's going to steal your fingerprints :lol:
:beer:, Arnold
-
Nice :bow: :bow: :bow: :bow:
Mind i thought you would have used triplex cotters to retain the valves. :lol: :lol: :lol: :lol:
I cant remember seeing a microscope in your shop but you must have one :scratch: :scratch: :scratch:
I have trouble with full size stuff at work.
With out doubt a true insperation
-
looking forward to to seeing it run
:ddb: :ddb: :ddb: :ddb: :ddb:
-
Cheers Lads :beer: :beer:
Just a bit of an up date ,, Things have been a bit slow had a few other workshop jobs to take care of :dremel:
Any way ,, the flywheels up next .machined up the flywheel blanks and decided to CNC the cut-outs for the spokes :dremel:
Here is my small CNC set up Denford Starmill and Mach3
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030580.jpg)
Mounted a 4 jaw chuck to hold the blanks ,,,,,,,,,, going to make a proper fixture for flywheels :proj:
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030581.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030582.jpg)
I used the find centre wizard in Mach3 to locate the blank centre
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030583.jpg)
Then off we go :ddb: :ddb: :ddb: :ddb:
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030589.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030588.jpg)
NOT FOR LONG ,,,,,,,,,MACHINE TOOK A MENTAL :lol: :lol: :lol: :lol:
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030601.jpg)
No idea why it just did ::)
Machined up the second one ok ,,,,,,,, wile it was chugging away machining the second blank i turned up another .
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030592.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030600.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030602.jpg)
Rob
-
As usuall Rob stunning work
John
-
nice touch with the keyways Rob
Im sorry now I did not do the same on mine :coffee:
Looking great
Pete
-
Nice Rob :clap: :clap:
-
Rob, thanks for some pictures of your CNC setup...I`m dying to have something to play with in terms of CNC soon!
I spent plenty of time reading over your info and pictures but I must admit, I`ve spent a good 20 minutes trying to work out what book you have been reading, the one the engine is sitting on ... "Surgeons Gen....? By Pregnant women, premature birth and .... ?"
I was thinking you were perhaps a midwife or something... then I realised it wasn`t a book but a packet of cigarattes! :doh:
-
I forgot to add...what lathe do you use for all your tiny parts - valves and spring retainers etc.
-
Chris, I did the same but only for about 5 mins! :doh:
I'm interested to know the answer to your question too, because the way I see it, you can turn small parts on a big lathe ...
-
Cheers Lads :beer:
Chris / Nick ,,,,,,,,,,,, i used my Myford for the small parts ,,,,,, i do have some were a Lorch watchmakers lathe that would be idea of small parts ,but its in need of some repair ::) ,,,,,,,, future project :dremel:
:lol: :lol: :lol: :lol: Surgeons General ,,,,,,,,,,, nowt better than smokes from the USA ,,,,,, i much prefer there health warnings :) ............ not allot of shop time this week ,,,,,,, but i did doodle up an idea for a Base/fuel tank ,,,,, stole Pete's idea :coffee:
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_DesignModel.jpg)
So i will be having ago at that today :dremel:
Rob
-
Just hope the carb can suck the fuel up, quite a few of these engines are very choosy about fuel tank level. On teh vertical I'm doing at teh moment it has a fuel pump so its no an issue.
Jason
-
Hi Rob
That Tank looks great
The mounting tabs are sensational and I doubt u will have too much trouble with the kerzel sucking up the fuel from the tank.
I did have some trouble filling up the tank due to an air lock, but a breather fixed that.
:beer:
-
Great job Rob :clap:
:poke: :poke: I see the CNC does the same to you as normal computers :lol: :lol:; now a DRO would REALLY help you make a mess :doh: :lol: :lol: :lol:
:beer:, Arnold
-
Hi Rob , question for you, did you find out why you cnc m/c took, as you put it “ a mental” , I was wondering did you programme each pocket separate or program one pocket and loop it to a 60 degree datum shift and repeat it another 5 times , very strange it should go walkabout on the 4th pocket ,???,,,,,,,,,,jeff,,,,,,,,(http://smilies.sofrayt.com/fsc/shocked2.gif)
-
Hi Rob , question for you, did you find out why you cnc m/c took, as you put it “ a mental” , I was wondering did you programme each pocket separate or program one pocket and loop it to a 60 degree datum shift and repeat it another 5 times , very strange it should go walkabout on the 4th pocket ,???,,,,,,,,,,jeff,,,,,,,,(http://smilies.sofrayt.com/fsc/shocked2.gif)
Hi Jeff
I still have no idea why the machine went walk about , as it cut the next two flywheels no problem , I selected all the pocket chains and programmed all to the same depth ,wall offset ,,,,,,, never thought about doing it "program one pocket and loop it to a 60 degree datum shift and repeat it another 5 times" maybe because i am not that good :lol: :lol: :lol:
It could be the old computer i am using ?
Rob :D
-
hay Rob
try using a pencil eraser to clean your computer's Ram terminals,
might give it a new lease on life :zap:
Pete
-
hay Rob
try using a pencil eraser to clean your computer's Ram terminals,
might give it a new lease on life :zap:
Pete
I will give it ago Pete :dremel:
Rob
-
Hi Rob , question for you, did you find out why you cnc m/c took, as you put it “ a mental” , I was wondering did you programme each pocket separate or program one pocket and loop it to a 60 degree datum shift and repeat it another 5 times , very strange it should go walkabout on the 4th pocket ,???,,,,,,,,,,jeff,,,,,,,,(http://smilies.sofrayt.com/fsc/shocked2.gif)
Hi Jeff
I still have no idea why the machine went walk about , as it cut the next two flywheels no problem , I selected all the pocket chains and programmed all to the same depth ,wall offset ,,,,,,, never thought about doing it "program one pocket and loop it to a 60 degree datum shift and repeat it another 5 times" maybe because i am not that good :lol: :lol: :lol:
It could be the old computer i am using ?
Rob :D
I don,t think it is your comp rob , I have a similar problem on our m/c ,
When I want to machine pockets equally spaced on a given pcd , rectangle pockets no problem , If I want round pockets ,sometimes I have to datum shift a fraction of a degree ,( .002 / .oo4 of a degree) after the first pocket , if I don’t it will miss some of the pockets out , we've put it down to an Anomaly in the software, :offtopic: apologies for going of topic in your thread , enjoying the thread so far rob , some 1st class machining ,, be proud to put my name to any of your jobs , looking forward to more of the same from you ,,,,,,cheers ,,,, jeff
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Hi Jeff
Your probably right ,,,,,,, maybe a glitch in Mach3 :smart: ,,,,,,,Dont worry about going OFF TOPIC ,,,, my posts normally do :lol: :lol: :lol: :lol:
Rob
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Just hope the carb can suck the fuel up, quite a few of these engines are very choosy about fuel tank level. On teh vertical I'm doing at teh moment it has a fuel pump so its no an issue.
Jason
Hi Jason
If i have a hight problem ,,,,,, i will fit a lift pump :dremel: ,,,,,, loads of room on the carb side of the engine for a small pump :med:
Rob
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You will probably need a different carb as the pump will still be pumping while the engine is missing and will flood the carb. I've just posted some pics of the pump and plumbing for my IHC here (http://www.homemodelenginemachinist.com/index.php?topic=10542.msg152586#msg152586)
Jason
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Hi Jason
Was planning on pumping the fuel up to a bowel reservoir ::) just below the carb with a drain back to tank :med: ,,,,a bit like a Fairbanks Morse model T carb as used back in the day on stationary engines
Rob
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Then if it wont run properly I suppose you will also have to add irritable bowel syndrome to the list of possible problems.
Dave.
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Then if it wont run properly I suppose you will also have to add irritable bowel syndrome to the list of possible problems.
Dave.
:lol: :lol: :lol: :lol: :lol: oooooooooops :doh:
Rob
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:lol: :lol: :lol:
Nice one David! :thumbup:
(Yes, I'm still here......) ::)
David D
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:lol: :lol: :lol:
Nice one David! :thumbup:
(Yes, I'm still here......) ::)
David D
NOW thats all i need is Dave D and Dave A ,,,,,,,, Teaming up as a comedy duo :doh: :doh: :doh:
Rob :D
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:lol: :lol: :lol:
Nice one David! :thumbup:
(Yes, I'm still here......) ::)
David D
NOW thats all i need is Dave D and Dave A ,,,,,,,, Teaming up as a comedy duo :doh: :doh: :doh:
Rob :D
Just waiting for Dave BC to turn up! :D :D :D
David D
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He's here ...
Stuffing Haddock and chips into his face at the moment ...
BC
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Moving on :lol: :lol: :lol:
Milled up the stock for the tank ,, i machined most of the material away on the HZ mill as it was quicker to do it that way .
Mounted to my ally fixture plate ready for the CNC to do its job.
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030604.jpg)
First profile complete .
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030605.jpg)
Next up a chamfer around the profile
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030606.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030608.jpg)
Next up the O ring grove 1.5mm
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030611.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030612.jpg)
Then spot drilling the bolt down pads ,,,,,,,, nearly had a disaster on this operation ,, i for got to program the tool to lift to clear the job as it moved to the third hole ::)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030614.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030615.jpg)
Pocket next :dremel:
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030616.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030617.jpg)
A bit like watching paint dry is this CNC lark :coffee:
Job done
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030618.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030625.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030626.jpg)
Rob
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Dave A, BC and D ,,,,,,,,,,,,,,,,,,,,, :doh: :doh: :doh: :lol: :lol: :lol: :lol: :lol:
mmmmmm fish and chips there's an idea for tea :thumbup:
Rob
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I wonder if we could go through the alphabet with Dave's :D
Great stuff Rob
:clap: :clap: :clap: :clap:
Tell me what are you going to put in that O ring groove, :scratch:
Stew
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O ring chord I would thin its liek a continuous length of o ring section
Looks good Rob, how long did it actually take to machine and also write the programme?
J
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Rob,
Very nice.
How was it held to the mill fixture plate?
:beer:
DaveH
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I wonder if we could go through the alphabet with Dave's :D
Great stuff Rob
:clap: :clap: :clap: :clap:
Tell me what are you going to put in that O ring groove, :scratch:
Stew
After you are finished going through the alphabet you are going to have to start going by number. I just counted them up and there are at least 29 Dave's. No wonder it's getting confusing. :lol: :lol: :lol:
Cheers :beer:
Don (not Dave)
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Tell me what are you going to put in that O ring groove, :scratch:
Stew
Hi Stew ,,,,,,, Just as Jason replied ,,,,, i will make one from O ring cord :dremel:
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030637.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030638.jpg)
Just cut to the required length and super glue the ends :med:
Looks good Rob, how long did it actually take to machine and also write the programme?
J
Hi Jason ,,,,,,, About 3/4 of an hour for the 3D computer model ,,,,,,,,,,,,,, 1 1/2 hours for the CAM /G code part ,, i am still feeling my way around that part and 3 hours 47 minutes of CNC machine time :dremel:
Rob,
How was it held to the mill fixture plate?
DaveH
Hi Dave ,,,,,,,,,, Four M3 socket cap screws from the underside of the plate screwed into the part were the 4 fixings would go to attach the part to the engine ,the part was spaced up from the fixture plate with 4 washers i had ground to the same thickness ,,,, the holes were then drilled M4 clear and counter bored so it could be bolted to the engine .
Don ,,,,,, :doh: how many Dave's :lol: :lol: :lol: :lol: :lol:
Rob
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Tell me what are you going to put in that O ring groove, :scratch:
Stew
Hi Stew ,,,,,,, Just as Jason replied ,,,,, i will make one from O ring cord :dremel:
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030637.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030638.jpg)
Just cut to the required length and super glue the ends :med:
I recon they would make a good drive belt for a small engine Governor
:smart:
I'll google O ring cord and see what it brings up
Thanks
Stew
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Hi Stew
Most bearing suppliers stock O ring cord ,,,, :dremel:
Rob
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WOW
that is looking wonderful :bow: :bow: :bow: :bow:
I'm gunna have to really lift my game :doh:
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Stunning Rob :bugeye: :bugeye: :bow: :bow: :bow:
I need to find a start button in my shop so i can spit bits out like that :) :)
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Cheers Lads :wave:
Just a wee bit more progress with the engine build made the fuel cap and filler neck :dremel:
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030797%7E0.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030801%7E0.jpg)
(http://www.nam-engineering.com/cm/albums/userpics/10002/normal_P1030802%7E0.jpg)
Rob
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Hi Rob
That's nice .. did you do the 'FUEL' bit with CNC ??
Didn't know Mach3 had a spellchecker ... :lol: :lol: :lol:
BTW you're FAMOUS :med: :med:
http://stirlingengineforum.com/viewtopic.php?f=1&t=872
Scroll down for the Piccys ..
BC
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Absolutly beautiful very nice build Rob. :clap: :clap: :clap:
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Good to see this one underway again, the cap looks fab but should it not read "gas" as its an American design :)
BTW turned some corian last week, machines easily with both HSS and the non ferrous tips that Glanze do, so the plugs should be easy.
J
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:bow: :bow: :bow: :thumbup: :thumbup: :thumbup: :clap: :clap: :clap:
Words fail me
At least i can read it now
It is so small in real
John
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Rob,
Very nice, matches everything else you have done. :clap: :clap: :clap:
:beer:
DaveH
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The usual, beautiful work Rob! :clap: :clap:
It's good to see this project moving along again...... :thumbup:
David D
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Cheers Lads :beer:
Dave BC ,,,,,,,,,,,,,,,,,,,, :lol: :lol: :lol: :lol: :lol: :lol: :lol: :lol: :lol: TWAT :)
Jason ,,,,,,,,, I agree it would look better with a more ye olde style GAS on the cap ,,i just used the standard fonts ,,, maybe next time :med: ,,,,, Probably have ago at the plug next , still thinking on the best way to get the most out of the Corrain you sent up ,,, as i may as well make 10 wile set up . :dremel:
The engine build will be a bit slow over the next mouth as i have sold my CNC mill to fund new CNC mill project :dremel: ,,,,,,,, well as soon as my parts get here :coffee:
Rob
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:clap: Great job Rob :clap:
Are those 2mm bolts holding on the filler neck ? - wee bit small for you :lol:
:bow: Great job on the nickel plating :thumbup:
:beer:, Arnold
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Dave BC ,,,,,,,,,,,,,,,,,,,, :lol: :lol: :lol: :lol: :lol: :lol: :lol: :lol: :lol: TWAT :)
Well, notwithstanding the lavish compliments :lol: :lol: ... was it cnc ???
Reason I ask, I tried to engrave OIL on a cap I made about a year ago, sort of freehand with the XY dials and it was not very successful.
I claimed it was Rustic Font ...
It was rubbish ...
BC
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Cheers Arnold , :beer:, i was quite chuffed with the way the plating came out ,,,,,still have a few bugs to work out ,,,J was less impressed coming home to pans of green stuff bubbling away on the stove :lol: :lol: :lol: :lol: :lol:,,,,,, I will be using massive 8BA screws :)
:lol: :lol: :lol: :lol: :lol: Hi Dave ,,,,,,,,,, yip the "FUEL" was done on the CNC ,,,,,the letters are a tad under 3 mm tall :dremel:
Rob
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Rob, did you ever post how you went about your Ni plating?
Chris
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In the post two up Rob quoted
"J was less impressed coming home to pans of green stuff bubbling away on the stove"
Not sure if that was part of his plating experiences or his cooking.............
John S.
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A very stupid question:
Why is it cal "Hit n Miss engine"??? :doh:
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Hi saw
It's the way the speed is governed ...
On some a mechanism causes the exhaust valve to stay open at max revs, thereby stopping the engine firing ..
Or stops the inlet valve opening ..
So, they fire a few of times, then idle a bit, then back to firing .... etc etc
Or something like that.
BC
Here you go ...
http://videos.howstuffworks.com/howstuffworks/183-how-hit-and-miss-engines-work-video.htm
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Thanks Bluechip, now I do understand (I think). :dremel:
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Hi Lads
Rob, did you ever post how you went about your Ni plating?
Chris
Chris ,,,,,,,,, still working on the plating post ,,, should have it sorted soon :thumbup:
John ,,,, :lol: :lol: i was batching up some Nickel electrolyte :med:
Hi Benni ,,,,,,,, looks like Dave sorted you out there :headbang:
Dave ,,,,,,,,, your deleted post was fun :lol: :lol: :lol: :lol: those were mackems ::)
Rob
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Dave ,,,,,,,,, your deleted post was fun :lol: :lol: :lol: :lol: those were mackems ::)
Rob
:lol: :lol: :lol:
Yeah. Had second thoughts about that one ... :thumbup:
You going to punt a few quid to try the service ??? :lol:
How did the birthday shindig go ?? Get any cake this time ???
BC
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Hi Rob, just wanted to say how well your engine is looking, and complement you on the fine detail. I don't know if you've run across them, but I was looking for small spark plugs for my radial, when I get it back on the front burner, and ran across some for weed eaters which have a ten by 1 mm thread, 12 mm long, there is one with a taper seat, and another style with a washer seal, which is what I've chosen, they both have a "z7" in their number, and I've got champion brand, while they come in other brands as well.
I hope to see a video of your engine soon, and enjoy the sound of it running. Very fine workmanship and very good looking in all its detail. :bow: :jaw: :beer: Cheers, mad jack
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Dave
I thought i read a post last nite then it disapired
I put it down to the wine i had been drinking :doh: :doh: :doh:
John
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Hi John
Wine ?? Never thought of you ruffy-tuffy Geordies sipping wine ...
The odd wheelie bin full of Nookie Brown possibly .. but wine ??
Nah ..
BC
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Hi Lads
Rob, did you ever post how you went about your Ni plating?
Chris
Chris ,,,,,,,,, still working on the plating post ,,, should have it sorted soon :thumbup:
OK, no rush, just make hurry up with it a bit :whip: :thumbup:
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Hi rob
i have been reading through this post and i am amazed at the workmanship and detail of your engine :D
watching how you do it makes it look easy and i am looking forward to seeing the finished article
all the best
scoot
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You going to punt a few quid to try the service ??? :lol:
How did the birthday shindig go ?? Get any cake this time ???
BC
:lol: :lol: :lol: :lol: :lol: i may do,,,,,,,,,,do you want a referral :lol: :lol: :lol: :lol: :lol:
Still suffering :hammer: :hammer: :(
Will do Chris :poke: :headbang:
Thanks for the compliment Scoot :thumbup:
Cheers for lookin in Madjack :beer: ,,,,,,,,, i have a few of those 10x1 spark plugs left over from my motorbike days :dremel: also a few CM6 plugs ,,, for this engine i will be making the plugs ,,,, Jason kindly sent me some corain ,,,,,,,,,,,, video may be aways off so much on at the moment :doh:
Cheers Rob
John why did you say you drank wine :doh: :lol: :lol: :lol: :lol: :lol: :lol:
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Rob
As you well know i only drink wine so i can apriciate propper beer :bugeye: :bugeye: :bugeye:
John
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Rob
As you well know i only drink wine so i can apriciate propper beer :bugeye: :bugeye: :bugeye:
John
:lol: :lol: :lol: :lol: beer is horrible,,,,,,,,,,, rather have a cup of tea :coffee:
Rob
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:lol: :lol: :lol: :lol: :lol: i may do,,,,,,,,,,do you want a referral :lol: :lol: :lol: :lol: :lol:
Still suffering :hammer: :hammer: :(
Hi Rob
Referral would be useful, largely on account I've lost the emulsion paint stirrer thingy that fits my electric drill ... no other reason I can think of ... :lol:
Still suffering eh? Serves you right .. John Barleycorn's Revenge ... never again, never again ... :lol: :lol:
BC
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:lol: :lol: :lol: :lol: :lol: you never no :poke: :poke: :lol: :lol:
Rob
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Brilliant thread Rob, the engine so far looks great - any updates?
Are you going to paint it?
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Thanks ChriX :beer:
I have not touched the engine for a good few weeks ,,, busy with my CNC project :proj:
Probably will not paint the engine , haven't really thought about it :palm:
Cheers Rob