Old 10-16-2009, 07:18 AM
  #2  
TS1955
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Join Date: Aug 2007
Location: Lost Creek, WV
Posts: 533
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You just devide the rod length by the stroke of the crank to get the ratio. For example: 6.535 rod and 4.250 stroke crank...6.535 / 4.250 = 1.53.

TS1955
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