Jean-Pierre Martineau hat das Rechenwerkzeug für den schraubenden Biker entwickelt – seine iPhone Anwendung „Bike Gears“ enthält diverse Kalkulationsfunktionen rund ums Bike – mehr Infos dazu auf seiner Website.
Das Programm gibts für 3,99 USD im Appstore
Features:
* Gear Ratio calculator
* Gain Ratio calculator
* Gear-inch calculator
* Development (Rollout) calculator
* For fixed-gear addicts, patch analysis lets you visualize skid patches
* Gear equivalency tool lets you find equivalent or closest-match gear ratios
* Speed calculator taking into account cadence and bicycle parameters
* Supports virtually any bicycle:
o 20T to 61T Chain Ring
o 11T to 35T Sprocket
o 150mm to 200mm crank arms lenghts in 2.5mm increments
o Over 40 popular tire sizes
* Simultaneous metric and imperial units*
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