View Single Post
Old 08-30-2009, 10:12 AM
Sydneysider's Avatar
Sydneysider Sydneysider is offline
Motorized Bicycle Elite Member
Join Date: Mar 2009
Location: Sydney
Posts: 189
Default Re: Engine and Bike Suggestions

they have pretty much the same top speed because there is no difference in their piston stroke, ie amount of travel the piston does from tdc to bdc. that would mean their top speed would be both roughly the same. the difference is in the bore which is the flat area at the top of the piston which means the 66-68cc has bigger area would produce a bit more torque if going up hills..

Last edited by Sydneysider; 08-30-2009 at 10:17 AM.
Reply With Quote