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Old 02-24-2004 | 07:58 AM
  #6874  
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rayhuang
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Joined: Dec 2001
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From: Cleveland Heights, Ohio
Default ROLLOUT
rollout:

tire diam x 3.14 x pinion/spur=rollout.

If youve got your rollout-but tire size has changed and you want to just figure out pinion:

rollout x spur / tire diam x 3.14=pinion.
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