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 ...

We know there are a lot of diesel junkies out there who are into math and physics, so we decided to put a few basic calculations in one place so everybody out there in reader land could have them ...

We need to choose the correct gear for our particular racing and track configuration, and we need to maintain that overall ratio when we make changes. Finding the right gear ratio for a particular ...

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 ...