What is the best transmission for a motorcycle: chain, belt or shaft drive? Some say motorcycle riders only wear black t-shirts and jackets because old chains used to cover them in oil. That could ...

On the left is the gear-drive cam and its distributor drive gear, while the pair on the right are for conventional chain drive. Notice the different helix angle of the gears. Shown here are the cam ...

In the early days of 4x4s, transfer cases like the Spicer 18, Dana 300, and NP205 were the norm. These cases all feature iron cases and are gear-driven for incredibly strength, but as manufacturers ...

The most reliable means for changing shaft speed remains a mechanical variable-speed transmission. These drives are used to provide a variable output speed from a constant-speed power source (as in a ...

If you’ve been considering buying your first ebike — or perhaps your second or third — chances are you’ve come across some models equipped with a belt drive instead of a traditional chain. But what ...