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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

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  #1  
Old 12-12-2008, 12:17 AM
Technocyclist's Avatar
Technocyclist Technocyclist is offline
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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...
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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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Old 04-18-2010, 12:13 PM
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Default Re: 31cc V-twin 4 stroke engine

no valve covers?
no pushrod tubes?
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Old 04-18-2010, 09:32 PM
simonjohnwilmer simonjohnwilmer is offline
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Default Re: 31cc V-twin 4 stroke engine

Many early engines did not have either pushrod tubes or rocker covers ,these early motors had a total loss oiling system that had a hand operated pump , this engine is a model ,not sure what the belt drive is for tho..
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Old 04-18-2010, 10:03 PM
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Default Re: 31cc V-twin 4 stroke engine

Its for cooling fans,in the write up
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Old 04-18-2010, 10:31 PM
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Default Re: 31cc V-twin 4 stroke engine

Wow ,,,You need to look through the whole site ,they got lots of kool stuff,even electronic ignition set-ups ,I think that adjustable ignition is possible
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Old 04-18-2010, 11:09 PM
simonjohnwilmer simonjohnwilmer is offline
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Default Re: 31cc V-twin 4 stroke engine

Yeah ... the engine sounds a lot more useable than I first thought , full oil system ,all ball bearing , very interesting ,Id put that on a bike no probs , the Builder even suggests it could be used for powering a bike .
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