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Contact Us
Richmond BMX Map

4401 Hobbs Lane - next to church
Richmond VA 23231
View Map | Get Directions

Track Operator:
Sandi Wiley
[email protected]

Track Image

Rollout Calculator and Gear Chart

BMX Ultra has created a really great rollout calculator that tells you exactly what the distance is covered by 1 full crank rotation based on your tire size and gears.

Click here to calculate your rollout

Here is a handy tool for calculating your gear ratio.

The formula to find the gear inches for your bike is simple.
Divide the number of teeth in the front sprocket, or freewheel,
by the number of teeth in the rear sprocket, or freewheel,
and then multiply by the diameter of the rear wheel.

Gear Calculator
Chainwheel teeth:
Freewheel teeth: 
Gear ratio:
Gear size: