fixed gear單速車專賣店 桃園

FixedGears

FixedGears is a gear calculator for riders of single-speed and fixed-gear bikes. It calculates gearing for various chainring and cog sizes, cadence, s...

RC Gears

Very Easy to Use RC Car Roll-Out and Final Drive CalculatorAbility to remember up to 5 different sets of calculations. Useful when running multiple ca...