Re: cc calculation?

James G /
jamesg
Oct 14, 2008 02:05AM
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Almost, sammy.

Given piston is 42mm, kit is 70cc:

D = 42mm

R = 2.1cm

Bore = 2.1^2*3.142592 = 13.85cm^2

70cc^3 / 13.85cm^2 = 5.05cm stroke.

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