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 ...

It is true, the sport of four-wheeling starts out innocently enough with a basic rig and some basic trails-that is, until you get the itch for some more ground clearance to tackle those tougher trails ...

Few vehicle modifications have as major an impact as changing gear ratios, and it's because your car's gear ratio directly translates to how it delivers power. Think about it: The gear ratio, or how ...

Different gears like spur, bevel, worm and wormwheel, rack and pinion, meshed gears, and threaded bars serve various purposes. When selecting a gear system, consider speed, direction, force, space, ...

Even good cars only give the driver two speeds to monitor: engine speed and vehicle speed. And while it’s the engine that ultimately does the work to turn the wheels and move a vehicle, a lot goes on ...

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 ...