Propeller Basics - Ventilation
Ventilation
 Ventilation is a situation where surface air or exhaust gasses are drawn into the propeller blades. When this situation occurs, boat speed is lost and engine RPM climbs rapidly. This can result from excessively tight cornering, a motor that is mounted very high on the transom, or by over-trimming the engine.
Learn All About Propellers Here!
P is for Propeller Propeller Basics
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.

 		Learn About Prop Characteristics Prop Characteristics
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.