APC AP04540 4.5x4 Aftermarket Propeller for 1/2A Pylon/Combat  [AP04540]

Aftermarket replacement for 1/2A pylon and combat planes

This APC AP04540 propeller is offered as an aftermarket replacement sized for 1/2A pylon and combat class aircraft. It acts as a straightforward spare to get models back in the air with similar handling and responsiveness when fitted to matching small electric sport airframes.

Fitting is simple: remove your spinner or nut, check the shaft and hub for excessive wear, mount the prop so it is concentric, and tighten with your original nut or spinner to the correct torque. Complete a static balance and conduct a short, low-power run to ensure there are no unusual vibrations before progressing to full-power flights.

When experimenting with setup, this prop size is often used to fine-tune the balance between thrust and responsiveness. After swapping props, keep an eye on motor and ESC temperatures on early flights and verify ground handling and stall characteristics in a safe area. Prioritise balance and alignment adjustments first, as these most strongly influence vibration and control feel.