APC AP1285F Folding Propeller 12x8.5F for Electric Models  [AP1285F]

Design and application overview

The APC AP1285F folding propeller set is intended for electric RC gliders and sport aircraft that accept 12x8.5 props. The folding geometry lowers drag during motor-off flight and returns thrust as soon as the motor spins, aiding glide performance and efficient cruise for self-launching sailplanes and sport models.

Installation notes: fit the blades into a compatible folding hub or spinner assembly ensuring the hub seating and shaft adapter suit the prop bore and motor shaft. Confirm blade orientation and locking before each flight. Balance the assembly on a prop balancer to reduce vibration passed to the motor and airframe.

Tuning and role: pitch and diameter affect climb rate and cruise efficiency; the 12x8.5 sizing strikes a compromise between thrust and economy for moderate-power installations. Folding props are commonly used where reduced drag during unpowered flight improves overall performance.