BMX Gear Ratio Calculator

来 Google Play 网购吧！购买内容之后，立刻就可以在您的 Android 手机或平板电脑上享用，摆脱一切同步烦恼。

Fine tune your BMX gearing, and experiment with different chainring and sprocket combinations for optimum performance.

This handy and easy to use app enables you to calculate the gear ratio, in standard gear inches, for any given chainring, rear sprocket, and rear wheel and tyre size combinations. It also lets you see which other chainring and sprocket size combinations come closest for all the different chainring sizes listed (20T to 49T), making comparisons of different set ups a piece of cake and giving you valuable insight into the impact of different configurations.