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4 Stroke Bicycle Engines & Kits 4 stroke motorized bicycle engine kits are great if you want reliability or do not want to mix your oil and gas. Learn from each other how to get the most out of your 4 stroke bicycle engine

31cc V-twin 4 stroke engine


Discussion at Motorized Bicycle Engine Kit Forum in the 4 Stroke Bicycle Engines & Kits forum. Has anybody ever thought of building their own V-twin engine and put it in a chopper? here's the engine: JEH ...
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Old 12-12-2008, 12:17 AM
Technocyclist's Avatar
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Thumbs up Build your own 32cc V-twin 4 stroke engine

Has anybody ever thought of building their own V-twin engine and put it in a chopper?

here's the engine:
JEH - "Howell V-Twin" Engine page

Specifications:
Flywheel Diameter: 4"
Cylinder Bore: 1"
Piston Stroke: 1-1/4"
Compression Ratio: 5:1
Displacement: 1.96 C.I. (32cc)
RPM Range: 800 - 4,500
Height: 6.9"
Width: 8.3"
Length: 5.8"

Anybody from Colorado to check this out?

Your thoughts please...

Thanks...
Attached Thumbnails
31cc V-twin 4 stroke engine-v-twin-1.jpg  31cc V-twin 4 stroke engine-v-twin-2.jpg  
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Last edited by Technocyclist : 12-14-2008 at 08:30 PM.
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Old 12-14-2008, 12:37 PM
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Default Re: 31cc V-twin 4 stroke engine

Wow, I wonder how many hours it would take me to make that! w/ all due respect I wouldn't put it in a chopper.
Or even 3Hp Bill JEH - "1906 Bill" Engine page
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Last edited by tyrslider : 12-14-2008 at 12:46 PM.
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Old 12-14-2008, 12:49 PM
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Default Re: 31cc V-twin 4 stroke engine

Very cool.

I'm curious how much power it would be able to put out for a bike.

A little small, but you would definitely need wide cranks.

Creative Engineering should take a whack at this...maybe even modify it to be 49cc He's probably one of the few of us that would have the proper tools and knowledge to make one of these.
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Old 12-14-2008, 08:08 PM
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Default Re: 31cc V-twin 4 stroke engine

He says it's all from round stock I don't see anything from the picture I can't make on a mill & lathe. It's the time it takes!
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Old 12-14-2008, 08:37 PM
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Default Re: 31cc V-twin 4 stroke engine

Quote:
Originally Posted by jasonh View Post
Very cool.

I'm curious how much power it would be able to put out for a bike.

A little small, but you would definitely need wide cranks.

Creative Engineering should take a whack at this...maybe even modify it to be 49cc He's probably one of the few of us that would have the proper tools and knowledge to make one of these.
Yes, I do hope Creative Engineering would see this thread. He has all the tools and knowledge to build one of these babies, not to mention the expertise too. But I don't think he has the time to build one... :-(
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