Vehicle speed (mph), engine speed (rpm), tire diameter (inches), trans gear ratio, and rear axle gear ratio are all interrelated. If you know four out of five of these values, you can determine what ...

I'm wondering what kind of mathematical models there are for estimating engine performance.<BR><BR>Say you want to model the performance of 1.2L tdi VW engine or a 1.3L fiat/gm engine in a car with a ...

The optimal gear ratio depends on how the engine fits the intended use of the boat. Courtesy Yamaha In every boat test we run, we include certain specs that we feel are valuable to our readers. Some ...