Thread: 80cc engine?
View Single Post
Old 05-05-2012, 06:14 AM
Nashville Kat's Avatar
Nashville Kat Nashville Kat is offline
Motorized Bicycle Elite Member
Join Date: Apr 2009
Location: Jacksonville, Florida
Posts: 1,403
Default Re: 80cc engine?

I just measured the relative sizes on my computer, and the 50 cc piston is about 28 mm in diameter- so 30 % more would be another 8.4 mm (3 x 2.8mm)
so 28 mm plus 8.4 mm = 34.4 mm- which indeed is roughly the relative size in the photo-

unless it is in fact a DIFFERENT piston in the motor than in the photo- it sorta looks like it could be genuine.
Reply With Quote