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 ...

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 ...

Transmission makers have to balance vehicle speed and engine power. The choices they make affect everything from shifting ...

Axle gearing plays a critical role in vehicle performance. It determines how efficiently engine power is delivered to the ...

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 ...

When it comes to motorcycle transmissions, there has been a long-standing debate between manual and automatic systems. Manual transmissions are known for their control and connection to tradition, and ...

All bikes with the exception of penny-farthings are geared between the crankset and the rear wheel. Most bikes will include a range of gears, so that you can choose one appropriate to where you’re ...

The Harmonic Drive is a key part of countless robotic applications. Incredibly simple yet quite odd to watch, this gear system is extremely precise with an impressive torque-to-weight ratio, even if ...