Multi-Rotor Propeller, 9 x 4.5 Overview
APC is proud to provide a line of propellers specifically designed for Multi-Rotor applications (Quad-Copters). These propellers bridge the gap between our Thin Electric propellers and Slow Flyer propellers. The âMR' propellers are lighter than the Thin Electrics and have a higher RPM capability than the Slow Flyers.
APC Suggested RPM Limits: Multi-Rotor Props Maximum RPM=105,000/prop diameter (inches)