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

4.75x4 propeller suited to 1/2A pylon and combat aircraft

The APC AP0474 propeller is a replacement RC blade aimed at 1/2A pylon and combat sport models. Molded in polycarbonate, it is intended for pilots who change props frequently and perform precise trim adjustments. The description highlights fitment, safe installation, and the influence of prop choice on handling while avoiding specific performance claims.

Determining compatibility depends on the prop hub bore and the shaft size rather than the aircraft label. Verify the prop bore against your adapter or motor shaft; adapters and reducers are often used to match propellers to different shaft diameters. Ensure ample clearance to avoid contact with the airframe or control surfaces during high-angle flying.

Installation notes: mount the prop so blade pitch and rotation correspond to the motor direction, hand-tighten the nut or collet, then apply the proper torque for your adapter. Static-balance the blade after mounting and check for rubbing at full control deflection. Conduct a cautious low-throttle test to check for vibration and secure fit before full-power flights.

Tuning guidance: switching to a 4.75x4 propeller shifts thrust and responsiveness compared with other sizes, so use prop changes as a tuning procedure—balance the prop, observe motor load, and make stepwise adjustments to power or prop selection to refine handling for pylon or combat disciplines. The product is described only as an RC accessory.