Power & RPM of Ground Adjustable Pitch E-Props Durandal & Excalibur

Power (Watt) = torque (N.m) x rotation speed (rad/s)

To calculate the max power of a propeller model, you need to know :
– the maximum torque absorbed by the blades and hub
– the maximum rotational speed of the propeller

Max torque DURANDAL / EXCALIBUR:
– 2-blade : 310 N.m
– 3-blade : 465 N.m
– 4-blade : 620 N.m
– 5-blade : 650 N.m

Rotation speed:
E-PROPS propellers are designed for the limitations of each engine.
The rotational speed of each propeller is indicated on the Identification Sheet supplied with each propeller.
Example: maximum rotation speed of E-PROPS models for ROTAX 9 series engines = 2,600 rpm (speed measured at the propeller = max engine speed / reduction ratio).
2600 rpm = 272.27 rad/s

Maximum power of DURANDAL & EXCALIBUR models on gear-drive engines:
– 2-blade : 115 hp
– 3-blade : 172 hp
– 4-blade : 230 hp
– 5-blade : 240 hp