Top Speed, 80cc Chinese motor? what is the record?

GoldenMotor.com

FOG

Well-Known Member
Mar 3, 2019
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From High School Geometry.

Divide the bore by 2. That's the radius. Multiply that by itself. That's the square. Times pi. I use 3.14. And that's the flat or square area.

Multiply the flat area by the stroke and you have cc's.

Or cubic inches. That depends on what you started with.
 

bairdco

a guy who makes cool bikes
Aug 18, 2009
6,537
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living the dream in southern california
BS i have an 80cc Chinese motor.
You PM'd me about a post I made five years ago? Congratulations on owning an 80cc Chinese motor.

I don't have one. In fact, I don't even have a Chinese motor at all anymore. The last one I owned is probably still out in the desert at the Grange/ Apple Valley Raceway where I threw it after it broke a ring starting it up before a race. I hate those crappy motors.
 
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