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 ...

Nelson Ireson October 18, 2011 Comment Now! The Shelby Supercars Tuatara is steadily progressing through its development process, with the latest work being done on selecting the final gear ratios for ...

Building your 4x4 can be one of the most enjoyable and rewarding adventures that you will ever take. While we understand that not everyone is a master fabricator, simply getting to know the basics of ...

Optional axle ratios can tailor pickup truck power and efficiency to suit your needs as long as the gearing keeps the engine in its torque sweet spot. Often overlooked, optional gear ratios play a key ...

When you’re driving a car with a stickshift, it’s pretty easy to keep track of which gear you’re in. That can be a little bit ...

The off-road world thrives on rugged capability and raw power, and for years, side-by-side vehicles have relied on the trusty continuously variable transmission (CVT) to tackle everything from muddy ...