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Gear Ratio Calculator
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For the road bike and the MTB riders

The application calculates gear ratios for a bike exterior transmission machines attached, such as the road bike and the MTB.

Combination of 22 types of chain wheel, 39 types of sprockets and 70 types of tires - Create a graph of the gear ratio and speed-cadence.

By switch ON/OFF the display of each inner / center / outer gear, you can simulate the optimal gear ratio.

This application helps you to choosing a satisfy replacement parts.

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