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 ...

You've added the lift and big tires, but you're being outrun on the freeway by aged Yugos, and your 4WD sucks gas faster than an earthmover. Part of your woes may simply be due to the gearing in your ...

Engine capacity, transmission speed, and drivetrain options are important factors when shopping for a pickup truck. But there is one area that shouldn’t be overlooked, and that’s choosing the right ...

A new manual transmission from Tremec is sending a shockwave through the performance world, and it lands squarely on the doorstep of the Chevy Corvette team. Tremec developed a bespoke 6-speed manual ...

Choosing the right motor and VFD type depends on a variety of factors; however, it is necessary to analyze how the motor changes when the speed is reduced. The experts at eMotors Direct outline ...

A super-simple way to get the latest SRAM ratio gains from your ‘obsolete’ SRAM cable shifters and it’s not even hard to install - it will void your warranty though You can trust Cyclingnews Our ...