R/C Tech Forums - View Single Post - Pro 10: 235mm Le Mans Prototype Pan Car Discussion

06-03-2016, 05:51 AM

#3138

DirkW

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Quote:

Originally Posted by howardcano

Rollout = Tire_diameter * 3.146 * ( Pinion_teeth / Spur_teeth )

For your numbers, that's 51.6mm. A 17 tooth pinion and 87 tooth spur would give 38mm rollout.

Pi is ~3.1416... not 3.146

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