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Bore Vs. Stroke

2K views 12 replies 8 participants last post by  wkohn 
A Atwood said:
Cyl #1- 4" bore 3" stroke =37.7ci
Cyl #2- 3.465 bore 3" stroke = 37.72ci
Something's wrong here. Both have the same stroke but cyclinder 2 is smaller than cyclinder 1. No way they could have the same displacement.

V= pi x r^2 x h

cylinder 1 = 3.1417 x 4 x 3 = 37.7 ci

cylinder 2 = 3.1417 x (3.465/2)^2 x 3 = 28.29 ci
 
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