APC Folding Blade Prop 9x5
APC 9x5 folding electric blades for use with APC folding blade yokes or APC style spinners
APC Folding Props are great for applications that require short bursts of power, with extended periods of gliding in between, such as Electric Sailplanes, Motor Gliders and LMR (Limited Motor Run) type models. When the motor is turned off, the airflow folds the prop blades up against the aircraft fuselage reducing the prop drag for more efficient gliding flight.
According to APC's published Maximum RPM formula of 120,000 ÷ D for APC Folding props, the 9x5 prop should not be used over 13,333 RPM.
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