Efoil Surfboard propeller diameter and pitch how to calculate ?

Flipsky motor 65161

1. How to Calculate Propeller Diameter and Pitch?

Propeller diameter is simply the diameter of a circle scribed by the blade tips of the prop.

Propeller pitch is the distance the prop would move forward in one rotation if it were moving through a soft solid—think of a screw
being turned into wood. The blades on a propeller are analogous to the threads on a screw.

2. What happens if propeller pitch doesn't match motor?

If the propeller pitch is too low (lower in inches) the motor can run over the desired Max RPM which can lead to motor damage, or to
the motor protecting itself with a rev limiter.

If the prop pitch is too high (higher in inches) the motor may run below the Max RPM range—called “lugging the motor”—which can
also put undue stress on motor and gearcase components.

3. Because each customers efoil size, wing size, dust size, load, battery, etc are differnet, propeller size varies for different setup.

Like our 65161 waterproof motor wich is sold with the propeller together.