Propeller Basics - Diameter
Diameter
 Diameter is two times the distance from the center of the hub to the tip of the blade. It also can be looked at as the distance across the circle that the propeller would make when rotating.

Diameter is the first number listed when describing a propeller.
Diameter is the width of the circle that the propeller would make when rotating.
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How To Choose A Prop
Diameter Pitch
Cupping Rake
Ventilation Cavitation

We tell you everything you need to know about props from cupping to ventilation.

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3 Blades VS. 4
Left-Handed Props
Performance
Exhaust
Aluminum vs. Stainless Steel

If you want to modify your boat's performance, consider the above before making your selection. 		Learn About Engine RPM Determining RPM's
Effect of pitch on RPM
Test for Maximum RPM


For safety and efficient performance, it is critical that your engine operates within the RPM range recommended by the manufacturer.