When it’s time to buy a new propeller for your boat, diameter and pitch are the most important characteristics to research. To be able to select or upgrade to a new propeller, you must understand ...

The Pitch A quick search for used outboard motors will yield dozens of options, but you need to know both the pitch and diameter to find the right model for your personal watercraft. While both ...

Gear tooth geometry is determined primarily by pitch, depth, and pressure angle.

The culprit was premature failure of two small metal gears — a 4-in.-pitch-diameter gear segment (a portion of a 360 gear) and a 1.75-in. pinion.