Replacement APC AP0474 4.75x4 Propeller for 1/2A Pylon/Combat RC Models  [AP0474]

4.75x4 spare prop for small-scale pylon and combat craft

The APC AP0474 propeller is supplied as an RC replacement blade for 1/2A pylon and combat sport aircraft. Constructed from polycarbonate, it is targeted at small-scale sport pilots who frequently swap props and tweak trim. The note stresses correct matching and installation and how changing props affects handling, while not making specific performance claims.

Compatibility is based on hub bore and shaft size rather than the model designation alone. Always check the prop bore against your prop adapter or motor shaft; use bushings or collets where required to adapt propellers to differing shaft diameters. Allow sufficient clearance from the airframe and control surfaces to avoid blade strikes during steep manoeuvres.

Fitting advice: ensure blade pitch and rotation match motor direction, hand-tighten the prop, then secure to the torque appropriate for your adapter. Static-balance the prop and inspect for any rubbing at full control throw. Run a low-power test to confirm there is no vibration or loosening before full-throttle operation.

Tuning note: fitting a 4.75x4 changes thrust and responsiveness relative to other prop sizes, so use prop swaps as part of tuning—check balance, monitor motor loading, and adjust power settings or prop size incrementally to tune handling for pylon or combat styles. The item is presented purely as an RC accessory.