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Old 05-06-2005, 06:25 PM   #1
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Default Rollout??

Just a quick question to the onroad guys who know more about this stuff than the offroaders....

I just added larger diameter tires to my mini truck and wanted to know which way to go with the pinion gear. Do I need to compensate with a higher pinion or a lower pinion for these larger tires???

Thanks.
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Old 05-06-2005, 06:47 PM   #2
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smaller pinion....... perhaps 2 teeth down depending on how big you went.

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Old 05-06-2005, 09:08 PM   #3
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Thanks Jeff, I'll see how that goes!
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Old 05-06-2005, 09:19 PM   #4
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ROLLOUT = (pinion * 3.1415 * tire diameter) / (spur * drive ratio)

try this formula and you'll find the right numbers.....
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