Author Topic: Odds and ends hit and miss  (Read 5198 times)

Offline 4x4machinist

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Odds and ends hit and miss
« on: December 16, 2024, 12:03:56 am »
Getting this running has been very challenging. I believe some of the things that helped are, using a GM 4 pin HEI module with a proximity switch to fire the spark plug, using a o-ring instead of a cast iron piston ring, using a o-ring to seal the intake and exhaust block, using a o-ring to seal the exhaust block to the cylinder, using pre-mixed 2 stroke fuel, one governor spring instead of 2. It seems to flood very easily which took me a minute to figure out. If I just shut the ignition off to stop it, it continues to draw fuel in causing it to flood. It’s better to just shut the fuel needle off to stop it. Here’s a video of it running

<a href="https://www.youtube.com/watch?v=6N8Mb4xZwMw" target="_blank">http://www.youtube.com/watch?v=6N8Mb4xZwMw</a>

Offline cnr6400

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Re: Odds and ends hit and miss
« Reply #1 on: December 16, 2024, 12:11:55 am »
 :ThumbsUp: :ThumbsUp: :ThumbsUp: :cheers:
"I've cut that stock three times, and it's still too short!"

Offline michaelr

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Re: Odds and ends hit and miss
« Reply #2 on: December 16, 2024, 08:53:36 am »
Your engine is running nice, but regarding the fuel flooding, have you got your fuel tank mounted too high to cause gravity feeding, the top of your fuel tank should  be level with the needle valve allowing the engine to suck the fuel into the intake.

Michael.
« Last Edit: December 16, 2024, 09:32:27 am by michaelr »

Offline 4x4machinist

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Re: Odds and ends hit and miss
« Reply #3 on: December 16, 2024, 10:52:17 am »
Thank you Michaelr!
I’ll see about lowering it

Offline gldavison

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Re: Odds and ends hit and miss
« Reply #4 on: December 16, 2024, 10:49:37 pm »
Nice running engine. What is the bore , stroke , flywheel dia. ?
Gary
Windows 10 & 11, Alibre Design Pro V29, IntelliCADPro6, CamBam, Mach4, 3D Printers, Cetus, Anet ET5 X
15" South Bend, 10" Logan lathe, Grizzly square column mill, CNC router & Hot wire cutter, Lagun FTV-1 knee mill, Sherline mill & lathe

Offline 4x4machinist

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Re: Odds and ends hit and miss
« Reply #5 on: December 17, 2024, 12:38:35 am »
Thanks gldavison
The bore is 1”
The stroke is 1-3/8”
The flywheels are 5” diameters

Offline Art K

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Re: Odds and ends hit and miss
« Reply #6 on: December 17, 2024, 02:46:12 am »
I must say that is a nice looking engine, and it runs quite well to.
Art
"The beautiful thing about learning is that no one can take it away from you" B.B. King

Offline 4x4machinist

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Re: Odds and ends hit and miss
« Reply #7 on: December 17, 2024, 10:56:11 am »
Thanks Art K!

Offline Roger B

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Re: Odds and ends hit and miss
« Reply #8 on: December 17, 2024, 05:03:25 pm »
Nicely done and runs well  :ThumbsUp:  :ThumbsUp:  :wine1:
Best regards

Roger

Offline 4x4machinist

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Re: Odds and ends hit and miss
« Reply #9 on: December 18, 2024, 12:21:32 am »
Thanks Roger B

 

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