BMX Bike Sizing Data from the 1980's BMX Racing Video "Totally Awesome"
Slighty Updated Because Top Tube Lengths Have Increased
Measure the Riders inseam from crotch to floor with shoes on
Gear Ratio
- Gear Ratio = ((Wheel Diameter) x (Number of Teeth on Front Sprocket)) / (number of Teeth on Rear Sprocket)
