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Gallery, Projects and General => Project Logs => Topic started by: wheeltapper on July 29, 2011, 03:50:08 PM

Title: Nemett 15cc 4 stroke engine
Post by: wheeltapper on July 29, 2011, 03:50:08 PM
Hi Guys.

 well I've finally bitten the bullet and started building this engine.
this won't be a blow by blow account, rather a show and tell as I (hopefully) finish a part.

It will also take me a fair amount of time as I have to save for the material and tooling required, I've already come to a stop on the head because I need a rotary table and they don't grow on trees.


parts so far, cylinder jacket
(http://i293.photobucket.com/albums/mm72/wheeltapper_2008/model%20engineering%20stuff/cylinderjacket.jpg)

crankcase nosepiece.
(http://i293.photobucket.com/albums/mm72/wheeltapper_2008/model%20engineering%20stuff/bearinghousing.jpg)

part finished head.
(http://i293.photobucket.com/albums/mm72/wheeltapper_2008/model%20engineering%20stuff/partfinishedhead.jpg)

and crankshaft.
(http://i293.photobucket.com/albums/mm72/wheeltapper_2008/model%20engineering%20stuff/crankshaft.jpg)

That's it so far.
next is get a square lump of ally for the crankcase.
expensive hobby this, ain't it :(

more to follow soon.


I hope  :D

cheers
Roy
Title: Re: Nemett 15cc 4 stroke engine
Post by: Rob.Wilson on July 29, 2011, 05:43:47 PM
Good start Roy ,,,,,,,,,,,, :clap: :clap: :clap:

I have that engine on my to build list  :thumbup:


Rob
Title: Re: Nemett 15cc 4 stroke engine
Post by: doubleboost on July 29, 2011, 06:05:29 PM
Hi
Roy
The parts you have made are quality stuff  :thumbup: :thumbup: :thumbup:
Thanks for posting
Title: Re: Nemett 15cc 4 stroke engine
Post by: Brass_Machine on July 29, 2011, 07:10:45 PM
Nice looking engine to build. You got a great start on it!

Where do I find the plans?

Eric
Title: Re: Nemett 15cc 4 stroke engine
Post by: Stilldrillin on July 30, 2011, 01:39:32 AM
That's a good, purposeful start Roy!  :clap: :clap:

Looking forward to watching steady development......  :thumbup:

David D
Title: Re: Nemett 15cc 4 stroke engine
Post by: HS93 on July 30, 2011, 03:04:22 AM
that looks a good start, Have you got any pictures of the other side of the engine ?  also have you drawn the plans or can they be got anywhere ?

Peter
Title: Re: Nemett 15cc 4 stroke engine
Post by: raynerd on July 30, 2011, 04:20:13 AM
Nice start, the plans are a pain to get hold of!! I purchased Malcom Stride's book - Minature Internal Combustion engines which has his NE15s splashed all over it, but no plans!

I believe even the plans in the ME editions stop short of a complete set and now he isn`t around they are no longer for sale.

I stand to be corrected!

Chris
Title: Re: Nemett 15cc 4 stroke engine
Post by: wheeltapper on July 30, 2011, 06:21:51 AM
Hi
thanks for the kind words.
I'm ( attempting) to build it straight from the plans in M.E.

They appear to go through to the end so I'll have to see what happens.
As for buying the plans, have you seen the price!
I can just about afford the material.
Title: Re: Nemett 15cc 4 stroke engine
Post by: raynerd on July 30, 2011, 06:43:52 AM
Wheeltapper - I haven`t seen the price because I couldn`t find the plans for sale anywhere!

Are you certain the ME articles cover the entire build? I was under the impression they stopped short.


pm to you.
Chris
Title: Re: Nemett 15cc 4 stroke engine
Post by: wheeltapper on July 30, 2011, 06:45:16 AM
Hi
HS93, I found this pic amongst the plans. its the only good pic of the other side.
(http://i293.photobucket.com/albums/mm72/wheeltapper_2008/model%20engineering%20stuff/otherside-1.jpg)

Roy.
Title: Re: Nemett 15cc 4 stroke engine
Post by: NickG on July 30, 2011, 02:06:00 PM
Seem to remember there being an advert in one of the model engineers for the plans. I started buying it again as saw that engine on the cover when it started but I quickly realised it was too complex for me! I think I may still have the odd copies I bought though.

Nice work there Roy.  :thumbup:

Nick
Title: Re: Nemett 15cc 4 stroke engine
Post by: John Stevenson on July 30, 2011, 02:33:08 PM
There are a set of plans and a build book for the Nemett.

I bought a job lot of books a while ago and I reckon there are a couple of each in there, need to check but the boxes are not here at the moment and stored elsewhere.

John S.
Title: Re: Nemett 15cc 4 stroke engine
Post by: Jasonb on July 30, 2011, 03:30:26 PM
The build book is based on the engine and like the ME articles does not quite have all the info, I think the cam profile may only be in the plans, possibly Malcoms way of ensuring he sold some sets of drawings.

JS The plans are hard to come by, since his death, you often see wanted adverts for them make sure you price them right.

J
Title: Re: Nemett 15cc 4 stroke engine
Post by: raynerd on July 30, 2011, 04:22:40 PM
By book build, do you mean his book, Minature IC engines?
Title: Re: Nemett 15cc 4 stroke engine
Post by: John Stevenson on July 30, 2011, 04:32:31 PM
No it's a  booklet, A4 sized called Building the Nemmett or something like that, with it not being here I can't be certain but it's certainly not the Miniature IC book, that's on the shelf above me.

The booklet is to go with the plans and cover the various operations, should be able to get it mid week.

Jason what sort of price are they fetching ?

John S.
Title: Re: Nemett 15cc 4 stroke engine
Post by: raynerd on July 30, 2011, 08:03:32 PM
Wow!! I never realised it had a build book, that is amazing! It is a real shame it isn`t for sale anymore.
Title: Re: Nemett 15cc 4 stroke engine
Post by: HS93 on July 30, 2011, 08:08:03 PM
No it's a  booklet, A4 sized called Building the Nemmett or something like that, with it not being here I can't be certain but it's certainly not the Miniature IC book, that's on the shelf above me.

The booklet is to go with the plans and cover the various operations, should be able to get it mid week.

Jason what sort of price are they fetching ?

John S.

If it is for sale any chance of first offer.

Peter
Title: Re: Nemett 15cc 4 stroke engine
Post by: John Stevenson on July 30, 2011, 08:13:23 PM
Peter,
Certainly, I'm not sure just what is in the box but I think there are about 3 sets, never actually looked all the way thru the box, just bought a big stack of books and magazines off a guy who was retiring and selling up.

As I say the box is in storage so need to go over and fetch it then sort it possibly mid week to later.

John S.
Title: Re: Nemett 15cc 4 stroke engine
Post by: raynerd on July 31, 2011, 03:19:58 AM
I`d also be interested in purchasing a copy John, I have the book mininature IC engines and also a set of plans for the NE15s but would like the book to go with them all.

Chris
Title: Re: Nemett 15cc 4 stroke engine
Post by: Jasonb on July 31, 2011, 08:20:11 AM
The drawings were a bit pricy when they were available at £45 a set, that would be a good starting price to be looking for.

I wonder if the booklet is infact copies of the ME articles.

J
Title: Re: Nemett 15cc 4 stroke engine
Post by: John Stevenson on July 31, 2011, 08:29:40 AM
Dunno ?

What year / issues was Nemett in, might have them here.

John S.
Title: Re: Nemett 15cc 4 stroke engine
Post by: wheeltapper on July 31, 2011, 09:05:28 AM
Hi all.
John, the parts I copied from the mags run from april 13 2006 to 20 dec 2006 if thats any help.
I can look up the issue No's if you want.

I've finished the crankshaft now, here's a couple of pics.

crankshaft with bearings.
(http://i293.photobucket.com/albums/mm72/wheeltapper_2008/model%20engineering%20stuff/crankshaftwithbearings.jpg)

and assembled in the nosepiece.
(http://i293.photobucket.com/albums/mm72/wheeltapper_2008/model%20engineering%20stuff/crankshaftassembled.jpg)

I'll try to get the material for the crankcase tomorrow.

thanks for looking.
Roy
Title: Re: Nemett 15cc 4 stroke engine
Post by: John Stevenson on July 31, 2011, 10:20:54 AM
Thanks Roy for the dates but i don't think I have anything that late.

John S.
Title: Re: Nemett 15cc 4 stroke engine
Post by: John Stevenson on August 07, 2011, 08:40:56 AM
OK been and collected two boxes of books, there were four boxes but two are still hiding so not sure what is in those as they were never undone.
 
So at the moment I have 5 books and 6 sets of plans all brand new except that one book has all the material sizes highlighted in highlighter pen.
 
One thing that puzzles me is all the drawings are clearly marked Nemett 15S - 15cc SOHC Four Stroke Engine, sheets 1 to 15.
 
However the book clearly states "Constructing the Lynx"
"Note: This is designed to accompany the full A3 engine drawings. It does not contain any drawings. "
 
So is the Lynx and the Nemett the same engine ? Looks to me as it is because I can't see any differences but it would be nice to know.

John S.
Title: Re: Nemett 15cc 4 stroke engine
Post by: Jasonb on August 07, 2011, 08:47:15 AM
Yes they are the same, he changed the numbers to big cats.

J
Title: Re: Nemett 15cc 4 stroke engine
Post by: HS93 on August 07, 2011, 09:02:50 AM
OK been and collected two boxes of books, there were four boxes but two are still hiding so not sure what is in those as they were never undone.
 
So at the moment I have 5 books and 6 sets of plans all brand new except that one book has all the material sizes highlighted in highlighter pen.
 
One thing that puzzles me is all the drawings are clearly marked Nemett 15S - 15cc SOHC Four Stroke Engine, sheets 1 to 15.
 
However the book clearly states "Constructing the Lynx"
"Note: This is designed to accompany the full A3 engine drawings. It does not contain any drawings. "
 
So is the Lynx and the Nemett the same engine ? Looks to me as it is because I can't see any differences but it would be nice to know.

John S.


Let me know what you want for a set

thanks Peter
Title: Re: Nemett 15cc 4 stroke engine
Post by: madjackghengis on August 09, 2011, 12:15:37 PM
Hi Wheeltapper, that is a great looking engine to build, and while I have often shared your lament of shortage of tooling, remember, someone was making engines when he had to build a lathe first.  There is a way around every possible stumbling block, and while rotary tables are nice they are luxuries, not necessities.  I have used a level on my three jaw chuck to use my lathe as a shaper to cut splines for a PTO clutch in my tractor, many people have shown the use of "dropping verticals" off a line drawn at an angle to a line representing the circumference of something, and divided it very accurately that way.  Many rotary tables have been made using only common taps and constructed jigs.  When you make tooling for one project, you will find it is used long after that project is finished, typically.   :beer:  Cheers, mad jack
Title: Re: Nemett 15cc 4 stroke engine
Post by: wheeltapper on August 09, 2011, 01:56:36 PM
Hi Jack
thanks for the kind words.
I'm the first to subscribe to the "making tools to make tools" way, but sometimes don't you just want to build the damn engine. :lol: :lol:

I should get the material for the cylinder liner and crankcase tomorrow so there should soon be some more pics.




Note the words' should' and 'soon' in the above . :doh:

Roy
Title: Re: Nemett 15cc 4 stroke engine
Post by: wheeltapper on August 16, 2011, 11:42:03 AM
Hi
back again.

A few more progress pics.

cylinder liner
(http://i293.photobucket.com/albums/mm72/wheeltapper_2008/model%20engineering%20stuff/cylinderliner.jpg)

part finished crankcase
(http://i293.photobucket.com/albums/mm72/wheeltapper_2008/model%20engineering%20stuff/partfinishedcrankcase.jpg)

and  an overview of what's been done.
(http://i293.photobucket.com/albums/mm72/wheeltapper_2008/model%20engineering%20stuff/partlyassembledengine.jpg)

thanks for looking.
Roy
Title: Re: Nemett 15cc 4 stroke engine
Post by: DaveH on August 16, 2011, 12:37:53 PM
Roy,

Well it is coming along very nicely, some very nice machining there as well. :thumbup: :clap:

Looking good, Roy :thumbup: :thumbup: :thumbup:
 :beer:
DaveH
Title: Re: Nemett 15cc 4 stroke engine
Post by: wheeltapper on August 20, 2011, 12:54:40 PM
Hi
I dont usually embarrass myself in public but I had to take a pic of this.
poor mans DRO.
can I nominate it for bodge of the year? :lol:

I had to move the mill table an exact amount for the hole centres of the con rod for this engine.
steel bar clamped to the lathe tray, square clamped to that, digital caliper clamped to the mill vise and the other bit of the caliper clamped to the square.

piece of wood to take out the spring. :bugeye:


(http://i293.photobucket.com/albums/mm72/wheeltapper_2008/model%20engineering%20stuff/poormansdro.jpg)

am I mad or what?

Roy
Title: Re: Nemett 15cc 4 stroke engine
Post by: NickG on August 20, 2011, 01:38:01 PM
could have just used the dials!  :lol:
Title: Re: Nemett 15cc 4 stroke engine
Post by: wheeltapper on August 20, 2011, 01:47:30 PM
On this mill I wouldn't trust them as far as I could throw them.

Roy
Title: Re: Nemett 15cc 4 stroke engine
Post by: Stilldrillin on August 20, 2011, 05:43:27 PM
Nicely bodged Roy!  :clap: :clap:

I really like that........ :thumbup:

David D
Title: Re: Nemett 15cc 4 stroke engine
Post by: doubleboost on August 20, 2011, 05:51:53 PM
As long as it works  :clap: :clap: :clap: :clap:
Coming on nicely  :thumbup: :thumbup:
John
Title: Re: Nemett 15cc 4 stroke engine
Post by: andyf on August 20, 2011, 08:32:16 PM
can I nominate it for bodge of the year? :lol:

That's even worse than the rig-up I used on my milling machine yesterday to trim the angled top and bottoms of the splayed wooden legs of a table for my grinder and (now mounted on a base) portable bandsaw!


am I mad or what?

If you are, you'll be the last to know. Maybe we should have a poll  :lol:

Andy
Title: Re: Nemett 15cc 4 stroke engine
Post by: Brass_Machine on August 20, 2011, 09:06:48 PM
Mad skills on the DRO  :headbang: :headbang: We do what needs to be done!

Build is coming along nicely.

Eric
Title: Re: Nemett 15cc 4 stroke engine
Post by: wheeltapper on August 21, 2011, 08:16:17 AM
Hi all.
Just a couple of pics of the finished crankcase.

Or
how to turn an expensive lump of aluminium into a hole  :scratch:
(http://i293.photobucket.com/albums/mm72/wheeltapper_2008/model%20engineering%20stuff/completecrankcaseback2.jpg)
(http://i293.photobucket.com/albums/mm72/wheeltapper_2008/model%20engineering%20stuff/completecrankcaseback.jpg)


cheers
Roy
Title: Re: Nemett 15cc 4 stroke engine
Post by: NickG on August 22, 2011, 04:27:02 AM
Roy,

said it slightly tongue in cheek - I wouldn't trust my chinese mill dials either, except for over short distances ... the further I go, the larger the error gets, must be thread pitch error or something?!

I haven't got around to installing a DRO either. I've always debated whether to spenda  few hundred quid doing that or putting that money towards a better machine! I think a better machine would cost an awful lot though, unless I went down the older but better quality route like I have with the lathe.

Anyway, looking very good so far!  :bow:
Title: Re: Nemett 15cc 4 stroke engine
Post by: wheeltapper on August 22, 2011, 07:50:39 AM
Thanks Nick.
the trouble with my mill is for a start its an imperial one, they didn't have a metric version in stock.

the dials go from zero to 6o thou then a 2.5 thou gap back to zero. so you go from 0 to 60, turn the dial to 0, go to 60, turn to 0, and on and on and......................... :doh:

the measurement you want is in mm so convert to thou, divide by 60 for number of turns plus remainder.

by the time I've done that for a distance ( and lost count ) I may as well measure the space with a wooden rule and a piece of chalk. :bang: :bang:

silly bl##dy thing.

Roy
who will struggle on regardless :D
Title: Re: Nemett 15cc 4 stroke engine
Post by: NickG on August 22, 2011, 11:08:22 AM
 :lol:

Mine are 0-60thou too in 2 thou intervals I think, but I haven't noticed a 2.5 thou gap? Maybe that's why mine are innaccurate!

Title: Re: Nemett 15cc 4 stroke engine
Post by: wheeltapper on August 22, 2011, 12:19:49 PM
Nick,
heres a pic of mine
(http://i293.photobucket.com/albums/mm72/wheeltapper_2008/model%20engineering%20stuff/milldial.jpg)

1 thou divisions and a silly gap.

Roy
Title: Re: Nemett 15cc 4 stroke engine
Post by: NickG on August 22, 2011, 01:41:00 PM
Cheers for that Roy, no mine definitely doesn't have the gap just checked, it's just cr@p!

Strange, guess they decided to use a 16tpi thread before thinking of the consequences?!  :doh: What thread does that make mine though?!

I often think about putting the digivern type scales on too which would be far cheaper but obviously not as good, have heard all the stuff about swarf, coolant and batteries running out, as well as not being able to see the screens. I need to save up for a proper DRO, think it will transform the mill.

Anyway, sorry for straying a little OT, good work around  :thumbup:

Nick
Title: Re: Nemett 15cc 4 stroke engine
Post by: Stilldrillin on August 22, 2011, 03:58:07 PM
Nick, Roy.
My first mini mill was 1/16" per turn. Drove me mad, after a working lifetime of "thous per turn"......  :bang: :bang:

Given chance to replace a few months ago. I bought same, but metric version.... 1.5mm per turn. With 75 divisions!!  :bugeye:  :bang: :bang:

1 turn gives .059"..... I could cope, if X & Y had 0-60 dials, like the Z axis.....   :thumbup:

David D
Title: Re: Nemett 15cc 4 stroke engine
Post by: wheeltapper on August 22, 2011, 05:15:55 PM
Jeeze,  that sounds worse than mine.

I started another thread here about this.

http://madmodder.net/index.php?topic=5907.0

I thought it would save dragging this one too far off topic.

Roy
Title: Re: Nemett 15cc 4 stroke engine
Post by: Stilldrillin on August 23, 2011, 02:13:21 AM
 :offtopic:     :offtopic:     :offtopic:     :offtopic:

Well done Roy!  :clap:

Let's get back to creating intricate pieces of metal........   :thumbup:

David D
Title: Re: Nemett 15cc 4 stroke engine
Post by: wheeltapper on August 25, 2011, 08:42:44 AM
Hi
Talking of intricate pieces of metal;
we have a piston.
(http://i293.photobucket.com/albums/mm72/wheeltapper_2008/model%20engineering%20stuff/Piston.jpg)
(http://i293.photobucket.com/albums/mm72/wheeltapper_2008/model%20engineering%20stuff/Piston2.jpg)
the next job is making the piston rings. cast iron, lovely and messy, yuck.

Ive also gone mad and ordered a rotary table. its a 4" vertex and I'm getting the dividing kit as well so I can tackle the cams and other things .

Cheers
A very hard up Roy.
Title: Re: Nemett 15cc 4 stroke engine
Post by: Stilldrillin on August 25, 2011, 12:12:47 PM
Hi
Talking of intricate pieces of metal;
we have a piston.

Cheers
A very hard up Roy.

And a very nice looking piston it is too Roy!  :clap: :clap: :thumbup:

But, sorry......... Not able to help you with the hard up problem.  ::)

David D
Title: Re: Nemett 15cc 4 stroke engine
Post by: wheeltapper on August 30, 2011, 08:13:42 AM
I,m here again  :D

more intricate bits of metal.

from these,
(http://i293.photobucket.com/albums/mm72/wheeltapper_2008/model%20engineering%20stuff/carbparts.jpg)

to this,
(http://i293.photobucket.com/albums/mm72/wheeltapper_2008/model%20engineering%20stuff/carb.jpg)
(http://i293.photobucket.com/albums/mm72/wheeltapper_2008/model%20engineering%20stuff/carb2.jpg)
(http://i293.photobucket.com/albums/mm72/wheeltapper_2008/model%20engineering%20stuff/carb3.jpg)
(http://i293.photobucket.com/albums/mm72/wheeltapper_2008/model%20engineering%20stuff/carb4.jpg)

AA cell for sizing.

cheers
Roy
Title: Re: Nemett 15cc 4 stroke engine
Post by: saw on August 30, 2011, 09:36:00 AM
Very nice work
 :mmr:
Title: Re: Nemett 15cc 4 stroke engine
Post by: sbwhart on August 30, 2011, 10:13:42 AM
Real nice neat work Roy

 :thumbup: :thumbup: :thumbup:

 :clap: :clap: :clap:

 I've bin quetly following along.

Stew

Title: Re: Nemett 15cc 4 stroke engine
Post by: Stilldrillin on August 30, 2011, 12:01:52 PM
COR!!  :bugeye:

I really like that little carb......  :thumbup:

David D
Title: Re: Nemett 15cc 4 stroke engine
Post by: wheeltapper on August 30, 2011, 12:59:57 PM
Thanks, I just hope the darn thing works. :doh:

Roy.
Title: Re: Nemett 15cc 4 stroke engine
Post by: wheeltapper on September 03, 2011, 10:42:05 AM
Hi
just a couple of bits.
now I've got a rotary table I can do the con rod.
I've also made and fitted the piston rings.
(http://i293.photobucket.com/albums/mm72/wheeltapper_2008/model%20engineering%20stuff/conrodwithbearingpistonwithrings.jpg)

cheers
Roy
Title: Re: Nemett 15cc 4 stroke engine
Post by: Rob.Wilson on September 06, 2011, 01:11:25 PM
Hi Roy  :bow: :bow: :bow:


you have made a cracking job of making the  carb  :bow: :bow: :bow:   and some dam fine machining on the rest of the engine parts too  :thumbup:,,, i will be watching this build as i fancy building this engine one day .


Rob
Title: Re: Nemett 15cc 4 stroke engine
Post by: DaveH on September 06, 2011, 01:29:39 PM
Roy,

Very nice work, - smashing carb :thumbup: :thumbup: :thumbup: :clap: :clap: :clap:
 :beer:
DaveH
Title: Re: Nemett 15cc 4 stroke engine
Post by: wheeltapper on September 06, 2011, 01:31:27 PM
thanks guys.
Roy
Title: Re: Nemett 15cc 4 stroke engine
Post by: Brass_Machine on September 06, 2011, 02:45:33 PM
Wow... Looking good!

Eric
Title: Re: Nemett 15cc 4 stroke engine
Post by: doubleboost on September 06, 2011, 06:05:07 PM
Hi
Roy
That piston & rod look great  :thumbup: :thumbup: :thumbup:
I like the needle roller in the big end  :bugeye: :bugeye: :bugeye:
Some very nice machining there
John
Title: Re: Nemett 15cc 4 stroke engine
Post by: madjackghengis on September 07, 2011, 01:47:44 PM
Hi
I dont usually embarrass myself in public but I had to take a pic of this.
poor mans DRO.
can I nominate it for bodge of the year? :lol:

I had to move the mill table an exact amount for the hole centres of the con rod for this engine.
steel bar clamped to the lathe tray, square clamped to that, digital caliper clamped to the mill vise and the other bit of the caliper clamped to the square.

piece of wood to take out the spring. :bugeye:

(http://i293.photobucket.com/albums/mm72/wheeltapper_2008/model%20engineering%20stuff/poormansdro.jpg)

am I mad or what?

Roy


That can be no embarrassment, but rather the cobbled together accuracy test of the decade, and should be enshrined with a framed picture on the wall of your shop.  I'll second that call for "bodge of the year!! :nrocks: :bow: :mmr:  :beer: Cheers, mad jack
Title: Re: Nemett 15cc 4 stroke engine
Post by: wheeltapper on September 17, 2011, 12:06:59 PM
Hi
another step forward.
(http://i293.photobucket.com/albums/mm72/wheeltapper_2008/model%20engineering%20stuff/camboxbits.jpg)
(http://i293.photobucket.com/albums/mm72/wheeltapper_2008/model%20engineering%20stuff/cambox.jpg)

cambox.

more to follow soooooon :D

Roy
Title: Re: Nemett 15cc 4 stroke engine
Post by: wheeltapper on September 27, 2011, 08:05:20 AM
Hi
more progress, the cylinder head is finished ( apart from pressing in the valve guides when I get some phosfor bronze to make em.)

heres the top
(http://i293.photobucket.com/albums/mm72/wheeltapper_2008/model%20engineering%20stuff/completehead.jpg)
and the bottom
(http://i293.photobucket.com/albums/mm72/wheeltapper_2008/model%20engineering%20stuff/completehead2.jpg)
and all dressed up
(http://i293.photobucket.com/albums/mm72/wheeltapper_2008/model%20engineering%20stuff/headalldressedup.jpg)

I think I will attempt the cams next.

thanks for looking.
Roy
Title: Re: Nemett 15cc 4 stroke engine
Post by: Stilldrillin on September 27, 2011, 08:13:37 AM
They're all looking really good Roy!  :clap: :clap:

Keep 'em coming......  :thumbup:

David D
Title: Re: Nemett 15cc 4 stroke engine
Post by: DaveH on September 27, 2011, 01:13:22 PM
Roy,

Some very nice maching  :thumbup: :clap:

Looking great :thumbup: :clap:

 :beer:
DaveH
Title: Re: Nemett 15cc 4 stroke engine
Post by: Brass_Machine on September 27, 2011, 02:00:26 PM
Roy,

That is looking sharp!

Eric
Title: Re: Nemett 15cc 4 stroke engine
Post by: wheeltapper on September 28, 2011, 11:50:48 AM
Hi
a bit more done.
cams cut, fitted to shaft and installed in cambox.
(http://i293.photobucket.com/albums/mm72/wheeltapper_2008/model%20engineering%20stuff/camboxwithcamshaft.jpg)

cheers
Roy
Title: Re: Nemett 15cc 4 stroke engine
Post by: NickG on September 29, 2011, 10:31:51 PM
Wow, really nice work on the head  & cambox.  :thumbup: It is a really nice design this engine. 
Title: Re: Nemett 15cc 4 stroke engine
Post by: wheeltapper on September 30, 2011, 08:33:11 AM
thanks for the nice words guys, this is the first major thing I've built and the encouragement is appreciated.

and now, the beast temporarily assembled.
(http://i293.photobucket.com/albums/mm72/wheeltapper_2008/model%20engineering%20stuff/thebeastassembled2.jpg)
(http://i293.photobucket.com/albums/mm72/wheeltapper_2008/model%20engineering%20stuff/thebeastassembled.jpg)

not far now.

Roy
Title: Re: Nemett 15cc 4 stroke engine
Post by: Stilldrillin on September 30, 2011, 08:37:31 AM
Looking purposeful Roy!  :thumbup:

David D
Title: Re: Nemett 15cc 4 stroke engine
Post by: Rob.Wilson on September 30, 2011, 08:38:26 AM
 :drool: NICE ONE Roy  :clap: :clap: :clap: :clap: :clap: :clap:

Thats a mighty fine looking engine ,,,,,, well done  :thumbup:  I will be looking forward top seeing the video of her running  :)


Rob

Title: Re: Nemett 15cc 4 stroke engine
Post by: madjackghengis on September 30, 2011, 12:04:36 PM
It looks like you're really getting close now, we ought to be treated to some sound and fury out of the little beast fairly soon I expect.  Very nicely done, fine craftsmanship all the way. :bugeye: :jaw: :beer:  Cheers, mad jack
Title: Re: Nemett 15cc 4 stroke engine
Post by: wheeltapper on October 04, 2011, 03:58:59 PM
Hi all
I had a bit of a shock earlier, I made the timing disc to set the timing and discovered to my horror that the cams  were assembed wrongly on the shaft. :doh: :doh:

I managed to break the loktite grip with a small blowtorch so now I can do it again PROPERLY :bang: :bang:

Oh well, something had to go wrong sooner or later.

Roy
Title: Re: Nemett 15cc 4 stroke engine
Post by: madjackghengis on October 06, 2011, 11:36:38 AM
It is a long honored tradition in the far east, China in particular, but other places as well, to deliberately insert an error in a work, whether art, building, dish, everything which demands skill, just to demonstrate no intent of challenging the perfection of creation.  It is said that failing to do so will invoke an unintended error, which will interfere with the intended job one is doing, so maybe you need to put a flaw in it, so you won't get something else wrong.  I think some of these old traditional thoughts which have echoes in our own societies are of real value in putting our work and lives into perspective in the world at large.  Lots of fine looking parts, and getting awfully close to a finish line I hope.  Very nice work, and it should be a great runner. :jaw: :beer:  Looking forward to video, cheers, mad jack
Title: Re: Nemett 15cc 4 stroke engine
Post by: SCOOTER on October 12, 2011, 09:07:02 PM
Nice looking engine and some realy nice machining i am looking forward to seeing her run. :clap:
Title: Re: Nemett 15cc 4 stroke engine
Post by: wheeltapper on October 14, 2011, 12:37:38 PM
THE BEAST LIVES :D :) :D :)

It only works.

here are some pics of it ready to run,
(http://i293.photobucket.com/albums/mm72/wheeltapper_2008/model%20engineering%20stuff/nemett%2015cc%20engine%20running/DSCF0753.jpg)
(http://i293.photobucket.com/albums/mm72/wheeltapper_2008/model%20engineering%20stuff/nemett%2015cc%20engine%20running/DSCF0752.jpg)
(http://i293.photobucket.com/albums/mm72/wheeltapper_2008/model%20engineering%20stuff/nemett%2015cc%20engine%20running/DSCF0751.jpg)
(http://i293.photobucket.com/albums/mm72/wheeltapper_2008/model%20engineering%20stuff/nemett%2015cc%20engine%20running/DSCF0750.jpg)

and a couple of videos,
(http://i293.photobucket.com/albums/mm72/wheeltapper_2008/model%20engineering%20stuff/nemett%2015cc%20engine%20running/th_bestrun2.jpg) (http://s293.photobucket.com/albums/mm72/wheeltapper_2008/model%20engineering%20stuff/nemett%2015cc%20engine%20running/?action=view&current=bestrun2.mp4)

(http://i293.photobucket.com/albums/mm72/wheeltapper_2008/model%20engineering%20stuff/nemett%2015cc%20engine%20running/th_bestrun.jpg) (http://s293.photobucket.com/albums/mm72/wheeltapper_2008/model%20engineering%20stuff/nemett%2015cc%20engine%20running/?action=view&current=bestrun.mp4)

and some pics after stripping, cleaning and shining up a bit,
(http://i293.photobucket.com/albums/mm72/wheeltapper_2008/model%20engineering%20stuff/PA140003.jpg)
(http://i293.photobucket.com/albums/mm72/wheeltapper_2008/model%20engineering%20stuff/PA140004.jpg)
(http://i293.photobucket.com/albums/mm72/wheeltapper_2008/model%20engineering%20stuff/PA140005.jpg)
(http://i293.photobucket.com/albums/mm72/wheeltapper_2008/model%20engineering%20stuff/PA140006.jpg)

Am I chuffed or what?

hope you guys enjoy .

cheers
Roy
Title: Re: Nemett 15cc 4 stroke engine
Post by: Stilldrillin on October 14, 2011, 12:51:52 PM
YEee, HAAaaarrrr!    :ddb: :ddb: :clap: :clap:

Well done Roy!  :thumbup:

Afraid I can't manage your vids, I'll just have to imagine that throaty purrrr......  :drool:

David D
Title: Re: Nemett 15cc 4 stroke engine
Post by: Rob.Wilson on October 14, 2011, 01:19:45 PM
 :clap: :clap: :clap: :clap: :clap: :clap: WAY TO GO Roy  :ddb: :ddb: :ddb: :ddb: :ddb: :ddb: :ddb: :ddb:


Very well done  :drool:


Rob  :D
Title: Re: Nemett 15cc 4 stroke engine
Post by: wheeltapper on October 14, 2011, 01:43:08 PM
Hi
sorry you can't see the vid's David, I put them on Photobucket and I can't seem to get the correct link.
I just started a youtube account so I'll put them on there and see if that works .

Roy
Title: Re: Nemett 15cc 4 stroke engine
Post by: Stilldrillin on October 14, 2011, 02:29:24 PM
Hi
sorry you can't see the vid's David, I put them on Photobucket and I can't seem to get the correct link.
I just started a youtube account so I'll put them on there and see if that works .

Roy

Thanks Roy!  :thumbup:

Meself, and many others have trouble with P bucket's buffering. They've also lost several of my early vids!

Never had any problems with YouTube......

Looking forward to the show!  :D

David D
Title: Re: Nemett 15cc 4 stroke engine
Post by: wheeltapper on October 14, 2011, 02:48:39 PM
Lets try this,


that looks more like the business, one more to follow.

Roy

Title: Re: Nemett 15cc 4 stroke engine
Post by: wheeltapper on October 14, 2011, 03:18:11 PM
Heres the second one.


Roy
Title: Re: Nemett 15cc 4 stroke engine
Post by: saw on October 14, 2011, 03:51:04 PM
Congrat nice engine  :clap: :clap:
Title: Re: Nemett 15cc 4 stroke engine
Post by: Stilldrillin on October 14, 2011, 03:59:23 PM
Thanks Roy!  :thumbup:

I'm pleased I didn't miss that. Seems to be loosening up nicely.  :clap: :clap:

What a crackin' engine!  :bow: :bow:

David D
Title: Re: Nemett 15cc 4 stroke engine
Post by: PeterE on October 14, 2011, 06:08:53 PM
That is a really nice engine and first class craftsmanship - very well done!  :clap: :bow: :clap: :bow: :clap:

BR

/Peter
Title: Re: Nemett 15cc 4 stroke engine
Post by: NickG on October 15, 2011, 10:36:34 AM
That is brilliant, looks great. Was just thinking though, it must be difficult to start by a flick of the finger ... you're only relying on getting it to fire once and pick up so it's great that it does. Bet it would start every time with some sort of pulley or electric starter though ?
Title: Re: Nemett 15cc 4 stroke engine
Post by: raynerd on October 15, 2011, 01:23:31 PM
Well done mate..looks a cracking engine!

Chris
Title: Re: Nemett 15cc 4 stroke engine
Post by: doubleboost on October 15, 2011, 01:54:19 PM
Well done Roy
Cant beat the sound of a 4 stroke :thumbup: :thumbup: :thumbup: :thumbup:
John
Title: Re: Nemett 15cc 4 stroke engine
Post by: wheeltapper on October 22, 2011, 11:00:41 AM
Hi guys
one more pic then I'll stop boring you with it.
I had a free afternoon and a lump of ali

so I made a spinner.
(http://i293.photobucket.com/albums/mm72/wheeltapper_2008/model%20engineering%20stuff/finishedenginewithspinner.jpg)

thats all folks.

cheers
Roy
Title: Re: Nemett 15cc 4 stroke engine
Post by: saw on October 22, 2011, 11:27:35 AM
Hi, not boring at all it's a very fine engine you have there  :D :D :D
Title: Re: Nemett 15cc 4 stroke engine
Post by: Ronkh on October 22, 2011, 01:22:33 PM
Roy,

Never boring. Think of the opposite!! :thumbup:

Kind regards,

Ron
Title: Re: Nemett 15cc 4 stroke engine
Post by: Stilldrillin on October 22, 2011, 03:39:23 PM
Roy.
Mrs Drillin has just seen your last pic..... "Looks like the real thing!".  :bugeye:

Now, THAT'S a compliment!  :thumbup:

(Nice spinner, too!).  :clap: :clap:

David D
Title: Re: Nemett 15cc 4 stroke engine
Post by: wheeltapper on October 22, 2011, 04:12:53 PM
Thanks for the kind words guys.
all thats left is to make a nice wooden ( yuk,wood) base for it, I'll get my son to do that, he's into wood.

then there will be one last pic and then I need to think what to do next.

I rather fancy Bog's paddleduck engine.

Roy.
Title: Re: Nemett 15cc 4 stroke engine
Post by: Rob.Wilson on October 22, 2011, 04:19:41 PM
Very nice Roy ,,,,,,,,, really dose look the muts nuts  :bow: :bow: :bow: :bow:


Rob
Title: Re: Nemett 15cc 4 stroke engine
Post by: SCOOTER on October 24, 2011, 02:32:26 PM
Hi roy
not boring at all, your engine looks and sounds great ,  :nrocks:
Title: Re: Nemett 15cc 4 stroke engine
Post by: Doc on October 24, 2011, 09:10:47 PM
I have to agree NOT boring.
NICE engine and a nice looking spinner!
Title: Re: Nemett 15cc 4 stroke engine
Post by: wheeltapper on November 10, 2011, 11:54:53 AM
I amended the first pic in this post to get at the git who stole it, however I cant edit it to remove the link.
could a moderator please remove the first pic.
thanks
Roy
Title: Re: Nemett 15cc 4 stroke engine
Post by: Brass_Machine on November 10, 2011, 12:08:44 PM
I amended the first pic in this post to get at the git who stole it, however I cant edit it to remove the link.
could a moderator please remove the first pic.
thanks
Roy

Done. Nice job!
Title: Re: Nemett 15cc 4 stroke engine
Post by: wheeltapper on November 10, 2011, 12:14:45 PM
thanks for that.
should upset him a tad  :D :) :D

Roy
Title: Re: Nemett 15cc 4 stroke engine
Post by: Stilldrillin on November 10, 2011, 12:23:09 PM
thanks for that.
should upset him a tad :D :) :D

Roy

Sincerely hope so Roy!  :lol: :lol:

David D
Title: Re: Nemett 15cc 4 stroke engine
Post by: grayone on November 11, 2011, 02:45:17 AM

So at the moment I have 5 books and 6 sets of plans all brand new except that one book has all the material sizes highlighted in highlighter pen.
 

Do you still have a booklet and spare set of plans they you would be prepared to sell?

Graham
Title: Re: Nemett 15cc 4 stroke engine
Post by: -steves- on November 11, 2011, 03:20:04 AM
Wow, gobsmacked, absolutely cracking job and it runs great too.  :ddb:  :D :clap:

Gotta say I did cringe watching the video when the arm went over the prop, seen SO many fingers and arms cut doing just that, fortunately, mine only the once....  :doh:

Its amazing what some people on this site are capable of making, truely amazing stuff  :clap: :thumbup:
Title: Re: Nemett 15cc 4 stroke engine
Post by: wheeltapper on November 11, 2011, 05:13:02 AM
Thanks  :beer:

Roy
Title: Re: Nemett 15cc 4 stroke engine
Post by: Fredbare on November 11, 2011, 02:43:58 PM
I am new to this and admire the quality of the craftmanship.  :clap:

I also live in Norfolk (Fakenham), and wonder where you get your metal from?

John
Title: Re: Nemett 15cc 4 stroke engine
Post by: wheeltapper on November 11, 2011, 03:17:31 PM
Hi John
thanks for the kind words :beer:

I get most of my stock from a place called Ace Metal Supplies.
they are on the A47 just outside the Norwich outer ring road. the address is
10 Morgan way
bowthorpe ind estate
norwich
nr5 9JJ.

tel 01603 731935. ask for Greg.

I also get aluminium from here
http://stores.eBay.co.UK/Aluminium-Droitwich?_rdc=1

and stainless, silver steel and phosphor bronze from here
http://www.metal2models.btinternet.co.uk/

hope this helps.

Roy.
Title: Re: Nemett 15cc 4 stroke engine
Post by: sbwhart on November 11, 2011, 04:15:33 PM
Just read the thread through again thats a fine engine Roy

 :clap: :clap: :clap: :clap: :clap: :clap:
Title: Re: Nemett 15cc 4 stroke engine
Post by: Fredbare on November 12, 2011, 12:53:07 PM
Thank you Roy for that, I will certainly visit Ace Metal Supplies, next time I am in Norwich.http://madmodder.net/Smileys/default/kaffeetrinker_2.gif

John
Title: Re: Nemett 15cc 4 stroke engine
Post by: wheeltapper on November 12, 2011, 01:14:07 PM
John
it might be an idea to phone them first if you are after something in particular.
Its not a dedicated steel stockholder, its  part of an engineering firm called Denny Engineering.

if they haven't got what you're after they can probably get it.

Roy .