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Rollout Calculator

Spur Gear(Number of Teeth)
Pinion(Number of Teeth)
Tyre Diameter(mm)
Higher rollout number = slower acceleration and higher top speed.
Lower rollout number = faster acceleration and lower top speed.

Spur and Pinion Calculator

This calculator will return the best Spur Gear and Pinion combination given a Tyre Diameter and the Rollout you wish to achieve.
Tyre Diameter(mm)
Required Rollout