DynoGearRatio

De Skunk River Restorations, LLC no AppTrack Ninja.

Axle & DynoJet gear ratios

Find your car's rear axle (final drive) ratio with nothing but your phone, your tachometer, and a steady stretch of road. No OBD-II adapter, no jacking up the car, no counting ring-and-pinion teeth. Enter your tire size, hold a steady speed with your tach on a round number, and tap Capture. The app reads your GPS speed at that instant and pairs it with your RPM and tire size to calculate the ratio. Take a few readings and it averages them — and shows the closest common production ratio as a sanity check. HOW IT WORKS Enter your tire: printed metric size (like 205/55R16), overall diameter, or …

Categorias: Utilities

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