Higher, lower, taller, shorter, more, lesshow do you have any idea what guys are talking about when it comes to rear-axle gears? It's confusing, because the slang seems to contradict the math. Let's ...

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 ...

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 ...