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4 Stroke Bicycle Engines & Kits 4 stroke 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


4-stroke + cvt?

4 stroke 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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Old 11-09-2009, 09:13 AM
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Default 4-stroke + cvt?

I was looking at the bolt pattern of the Hua sheng 4-stroke motors and it looks the same as a pit bikes, I was wondering if anyone ever hooked up a pit cvt or gear reduction to one of these four strokes?
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Old 11-09-2009, 10:20 AM
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Default Re: 4-stroke + cvt?

Quote:
Originally Posted by john_the_great View Post
I was looking at the bolt pattern of the Hua sheng 4-stroke motors and it looks the same as a pit bikes, I was wondering if anyone ever hooked up a pit cvt or gear reduction to one of these four strokes?
ahh that looks sweat! exept the drive sprocket seems to be for smaller chain, not sure on the clutch bolt padern. i will have a look when i get home but i cant be positive by just eyeing it, how much is that gear box btw?
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Old 11-09-2009, 05:48 PM
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Default Re: 4-stroke + cvt?

I can tell you that the bolt pattern is not the same. The pattern of the cvt is bigger than the engine. Also, the output sprocket turns the opposite direction from the engine. The clutch bell is too small for the standard clutch also. I played with this for about a month before throwing it in the corner for a while.
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Old 11-09-2009, 06:21 PM
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Default Re: 4-stroke + cvt?

Also, I forgot, the crank shaft has to be cut off about a half an inch or so to allow the cvt to slide up enough for the clutch to fit inside the bell.
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Old 11-09-2009, 06:40 PM
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Default Re: 4-stroke + cvt?

Bolts right up to a Titan and the Titan comes with a clutch. Fancy scooter sells a 12 tooth 12mm sprocket 1/2 inch pitch for bike chain. You can get 11 tooth 14 tooth for 8mm chain.
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Old 11-09-2009, 06:44 PM
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Default Re: 4-stroke + cvt?

yeah, well a light four-stroke and a cvt would be the slick ticket for a bicycle, thanks for the feed back!

Buggy bike CVT initial install

this leaves me with the question... are the hs motors different from the titans?

Last edited by john_the_great; 11-09-2009 at 06:47 PM.
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Old 11-09-2009, 06:47 PM
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Default Re: 4-stroke + cvt?

http://motorbicycling.com/f37/cheap-cvt-mount-8784.html

My engine was from a cheap kit with a hoot gearbox. My mount was inside the frame also, not a rack mount. The above link is to the post I put up while I was playing with it. I will say that the two rides I got in before the thing broke was pretty nice. I just haven't convinced myself to tackle this project again. Good luck if you decide to go for it.
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Old 11-11-2009, 02:57 PM
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Default Re: 4-stroke + cvt?

Neat times did a rack-mount. http://motorbicycling.com/f36/cvt-rack-mount-7265.html

I had wanted to mount a CVT on a plate behind the seat tube. Via chain or belt, drive it remotely.

Think the CVT has a great future in our lil world. Some day I would like to commission MaxTorque to make up one for our needs. Might not be real cost effective but man! would be cool...
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Old 11-11-2009, 09:38 PM
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Default Re: 4-stroke + cvt?

the 5to 1 cvt and the 3to 1 you pictured will fit the right style motor you are talking about , but the one you pictured will not work, it has the wrong crank. its too long . you want the titan or one like it that has the shorter crank .
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Originally Posted by john_the_great View Post
I was looking at the bolt pattern of the Hua sheng 4-stroke motors and it looks the same as a pit bikes, I was wondering if anyone ever hooked up a pit cvt or gear reduction to one of these four strokes?
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Old 11-12-2009, 05:10 PM
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Default Re: 4-stroke + cvt?

Well, not the HS engine, but 1400+ miles and reliable as all get out. Not a crotch rocket but it gets me around very well.
WC
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