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Old 01-18-2010, 09:20 AM
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BarelyAWake BarelyAWake is offline
Motorized Bicycle Elite Member
Join Date: Jul 2009
Location: Maine
Posts: 7,212
Default Re: Engine Noise with 62cc

As Mac was mentioning, a lot of that "sketchy bearing sound" is coming from the clutch. The gear case cover itself acts as a resonator and amplifies what's already an annoying sound. I quieted mine down quite a bit by coating the inside of just the cover with a few coats of rubberized undercoating

As for why the lil ones seem to make more noise... I think that might just be a random luck of the draw more than anythin' else.
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