212cc Predator Engine Gear Ratio

M

mattp98

New Member
Hey Guys im new to this forum and I am building a beach cruiser with a 212cc predator engine (governor removed). I was wondering what gear ratio with a jackshaft kit would get me around 45 to 50mph and still have enough power to start from a stop and make it up hills.
 
zpt hey i got a 212cc predator with a jackshaft but i am running a cvt torque converter set-up but i am also shifting gears on the other side ...thats makes things way more complicated......i would start out with a 10 thooth on motor to 14 on jackshaft then 10 tooth to 50 on rear should put you in the ball park http://www.youtube.com/watch?v=CzEgWnnBMcs
 
hi matt and welcome. that will be one fast motorized bicycle. I am not familiar with the 212cc engine but I am sure a few members are and will be glad to share their experience, great to have you with us
 
I bought a Comet i have had no problems with it at all....but i am new to the bike building seen ...... I have almost 500 miles on it now
 
Hello Matt,
I have a beach cruiser myself. It tops out at 44mph. It is all in the gearing, the least amount of teeth on your sprocket the higher your top end will be. A 25 or 27 teeth sprocket should get you there, but your low end will be terrible. I burn up clutches monthly on my 66cc two stroke. Just the price I pay for a fast bike. Best of luck ... Jeff
 
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