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Old 10-10-2012, 03:27 PM
littletinman's Avatar
littletinman littletinman is offline
Motorized Bicycle Elite Member
Join Date: May 2012
Location: Gaithersburg, MD
Posts: 231
Default Re: Extreme engine vibrations at higher rpm's...

What size back wheel sprocket are you using?

this is most likely, from my understanding, due to crank balancing issues.
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