Author Topic: Hit n Miss Engine ,,,,to MR D Kerzel's design (Read 95263 times)

Jasonb · « **Reply #150 on:** June 20, 2011, 01:31:48 PM »

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

DaveH · « **Reply #151 on:** June 20, 2011, 02:03:10 PM »

Rob,

Very nice.

How was it held to the mill fixture plate?

DaveH

dsquire · « **Reply #152 on:** June 20, 2011, 02:19:34 PM »

Quote from: sbwhart on June 20, 2011, 12:25:07 PM

I wonder if we could go through the alphabet with Dave's

Great stuff Rob

Tell me what are you going to put in that O ring groove,

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.

Cheers

Don (not Dave)

Rob.Wilson · « **Reply #153 on:** June 20, 2011, 04:52:47 PM »

Quote from: sbwhart on June 20, 2011, 12:25:07 PM

Tell me what are you going to put in that O ring groove,

Stew

Hi Stew ,,,,,,, Just as Jason replied ,,,,, i will make one from O ring cord

Just cut to the required length and super glue the ends

Quote from: Jasonb on June 20, 2011, 01:31:48 PM

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

Quote from: DaveH on June 20, 2011, 02:03:10 PM

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 ,,,,,,

how many Dave's

Rob

sbwhart · « **Reply #154 on:** June 20, 2011, 05:07:41 PM »

Quote from: Rob.Wilson on June 20, 2011, 04:52:47 PM

Quote from: sbwhart on June 20, 2011, 12:25:07 PM

Tell me what are you going to put in that O ring groove,

Stew

Hi Stew ,,,,,,, Just as Jason replied ,,,,, i will make one from O ring cord

Just cut to the required length and super glue the ends

I recon they would make a good drive belt for a small engine Governor

I'll google O ring cord and see what it brings up

Thanks

Stew

Rob.Wilson · « **Reply #155 on:** June 20, 2011, 05:35:02 PM »

Hi Stew

Most bearing suppliers stock O ring cord ,,,,

Rob

metalmad · « **Reply #156 on:** June 20, 2011, 07:01:08 PM »

WOW
that is looking wonderful

I'm gunna have to really lift my game

doubleboost · « **Reply #157 on:** June 21, 2011, 12:25:43 PM »

Stunning Rob

I need to find a start button in my shop so i can spit bits out like that

Rob.Wilson · « **Reply #158 on:** September 04, 2011, 11:53:28 AM »

Cheers Lads

Just a wee bit more progress with the engine build made the fuel cap and filler neck

Rob

Bluechip · « **Reply #159 on:** September 04, 2011, 12:10:59 PM »

Hi Rob

That's nice .. did you do the 'FUEL' bit with CNC ??

Didn't know Mach3 had a spellchecker ...

BTW you're FAMOUS

http://stirlingengineforum.com/viewtopic.php?f=1&t=872

Scroll down for the Piccys ..

BC

saw · « **Reply #160 on:** September 04, 2011, 12:23:59 PM »

Absolutly beautiful very nice build Rob.

Jasonb · « **Reply #161 on:** September 04, 2011, 02:36:02 PM »

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

doubleboost · « **Reply #162 on:** September 04, 2011, 03:28:22 PM »

Words fail me
At least i can read it now
It is so small in real
John

DaveH · « **Reply #163 on:** September 04, 2011, 03:33:11 PM »

Rob,

Very nice, matches everything else you have done.

DaveH

Stilldrillin · « **Reply #164 on:** September 04, 2011, 05:56:52 PM »

The usual, beautiful work Rob!

It's good to see this project moving along again......

David D

Rob.Wilson · « **Reply #165 on:** September 05, 2011, 12:32:37 PM »

Cheers Lads

Dave BC ,,,,,,,,,,,,,,,,,,,,

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

,,,,, 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 .

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

,,,,,,,, well as soon as my parts get here

Rob

arnoldb · « **Reply #166 on:** September 05, 2011, 01:37:06 PM »

Great job Rob

Are those 2mm bolts holding on the filler neck ? - wee bit small for you

Great job on the nickel plating

, Arnold

Bluechip · « **Reply #167 on:** September 05, 2011, 04:29:30 PM »

Quote from: Rob.Wilson on September 05, 2011, 12:32:37 PM

Dave BC ,,,,,,,,,,,,,,,,,,,, TWAT

Well, notwithstanding the lavish compliments

... 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

Rob.Wilson · « **Reply #168 on:** September 05, 2011, 05:01:13 PM »

Cheers Arnold ,

, 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

,,,,,, I will be using massive 8BA screws

Hi Dave ,,,,,,,,,, yip the "FUEL" was done on the CNC ,,,,,the letters are a tad under 3 mm tall

Rob

raynerd · « **Reply #169 on:** October 02, 2011, 04:50:21 PM »

Rob, did you ever post how you went about your Ni plating?

Chris

John Stevenson · « **Reply #170 on:** October 02, 2011, 04:59:48 PM »

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.

saw · « **Reply #171 on:** October 02, 2011, 05:09:16 PM »

A very stupid question:
Why is it cal "Hit n Miss engine"???

Bluechip · « **Reply #172 on:** October 02, 2011, 05:23:27 PM »

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

saw · « **Reply #173 on:** October 03, 2011, 01:46:35 AM »

Thanks Bluechip, now I do understand (I think).

Rob.Wilson · « **Reply #174 on:** October 03, 2011, 09:59:55 AM »

Hi Lads

Quote from: craynerd on October 02, 2011, 04:50:21 PM

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

John ,,,,

i was batching up some Nickel electrolyte

Hi Benni ,,,,,,,, looks like Dave sorted you out there

Dave ,,,,,,,,, your deleted post was fun

those were mackems

Rob

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Author Topic: Hit n Miss Engine ,,,,to MR D Kerzel's design (Read 95263 times)

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