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  #11  
Old 01-02-2015, 12:50 PM
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Default Re: 50cc GY6 on a Bicycle??

I let myself (so my fault) get talked out of building with one when looking for a next project. CB and Map, if'n you 2 like them, wow, am gonna get one next round.
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  #12  
Old 01-02-2015, 05:30 PM
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Default Re: 50cc GY6 on a Bicycle??

Quote:
Originally Posted by Dan View Post
I let myself (so my fault) get talked out of building with one when looking for a next project. CB and Map, if'n you 2 like them, wow, am gonna get one next round.
Dan, one of my younger brothers had a 50cc and he tried to tare it up the way he road it and it never missed a beat, it finally got hard to start and then finally wouldn't start at all after no telling how many very hard miles, he parked it for a while thinking maybe he had killed it, I ask if he'd let me tinker with it a bit and he agreed, I changed CDI, spark plug, checked carb for any noticeable issues, even ran a compression test and all seemed to be perfect, even checked stator thinking something could be wrong there.

Finally it dawned on me to pull the tappet cover and check valve clearance...Bingo...! thats all the little gal needed was a simple adjustment, I set the valves to spec and she busted right off and ran like a brand new scooter... the little 50cc wouldn't do but 38-39mph on the flat, but it was smooth as silk and plenty peppy up to top speed, I'll bet one of the 50cc engines with an 80cc top end kit would be a fun set up on the scooter or on a bike build for sure.
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  #13  
Old 01-02-2015, 06:36 PM
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Default Re: 50cc GY6 on a Bicycle??

The biggest hurdle to using the common scooter mill is the chain drive since most are setup for a scooter drive wheel. The key is to find one of the versions used on the 4 wheelers since they already HAVE a chain drive conversion box.
Using this version, all you have to deal with is the extra length!
And BTW, the HUGE number of available upgrades for these motors can make them quite powerful and rawkus!
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  #14  
Old 01-02-2015, 06:39 PM
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Default Re: 50cc GY6 on a Bicycle??

I a 49cc that had a complete 80cc kit, cyl/piston, head, carb, ext, etc. It was pretty much a screamer for what it was. Whats cool as long as the sn begins with 139QMB the law thinks its 49cc. You can get a complete 150cc shipped to your door for $299. Should be a simple matter to engineer a drive off the cvts wheel shaft. They are electric and kick start and will start on an R/C lipo battery. Also have a reasonably hefty charge system too. Properly setup the cvt preforms as well as a manual trans and is much easier to deal with. It will supprt the bike as a suspension member and runs a single shock and has an excellent drumbrake, though the drum is intregral to the scooters wheel.The possibilities are wide open to creative building
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  #15  
Old 01-02-2015, 06:45 PM
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Default Re: 50cc GY6 on a Bicycle??

Awesome, Manic. TY for that information!

had to look it up
https://www.google.com/webhp?sourcei...cement+gearbox

Can get the quads for not much more than the engine alone! 2 funny
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  #16  
Old 01-02-2015, 06:46 PM
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Default Re: 50cc GY6 on a Bicycle??

Was typing at the same time, CB.
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  #17  
Old 01-02-2015, 07:37 PM
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Default Re: 50cc GY6 on a Bicycle??

Yes the Go Karts and 4 wheeler use what they call the short case version and they are normally set up for a 40 or 420 chain but the CVT belt runs to a assembly or gear box that goes to a chain drive down to the axle, some of the go karts even have a reverse....

wouldn't that be wild on a bicycle..!

The short case engine are higher too.

A stretched out bike frame and a well built jackshaft set up would be the way I would go with a long case engine if I were to build one, get the splined inset from a rear wheel and weld the desired sprocket onto that and then a chain from there to a jackshaft and from there to the wheel is the first design that comes to mind without thinking to much about it.

http://www.amazon.com/gp/product/B00...d_i=B008MQ38EY

loads of parts

http://www.motopartsmax.com/index.ph...engine/paID/40

http://www.partsforchinesescooters.com/

http://www.monstergy6.com/

Here is a little info you may find interesting about the GY6 and a place that sells some stuff for them also.

Can you say 12,000 RPM 4 stroke capability...LOL!

http://gokartsusa.com/hondagy6engine.aspx
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Last edited by mapbike; 01-02-2015 at 08:09 PM.
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  #18  
Old 01-02-2015, 07:41 PM
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Default Re: 50cc GY6 on a Bicycle??

LOL, be a heck of a sobriety test.

Heard in the ER; "So you were riding a bicycle with a motor attached and going backwards?"
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  #19  
Old 01-02-2015, 07:59 PM
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Default Re: 50cc GY6 on a Bicycle??

Are the carbs gravity fed?
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  #20  
Old 01-02-2015, 08:20 PM
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Default Re: 50cc GY6 on a Bicycle??

I think I could ride one of these..lo

I'd like to have either of these engines on a bike..










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