APC AP1504E 15x4E Electric Propeller Replacement for RC Planes  [AP1504E]

APC AP1504E replacement propeller overview

This APC AP1504E propeller is a direct replacement part intended for electric-powered model aircraft. The 15x4E marking describes diameter and pitch, which hobbyists use to match a propeller to a motor and electronic setup. Keep a spare on hand for routine maintenance, repairs after damage, or when testing alternative prop sizes during trimming flights.

General compatibility: this prop fits electric RC models where a 15-inch diameter and 4-inch pitch suit the motor and ESC load. Do not assume it will fit every airframe without checking the prop hub size and your motor shaft diameter. Verify the prop's mounting hole and shaft dimensions before fitting to avoid mismatches.

Installation notes: mount the propeller with the correct washer and nut or the appropriate prop adapter for your motor shaft, tightening to the torque recommended for your model hardware. After installation, perform a restrained static spin to confirm clearance, balance, and absence of vibration. Re-balance if you detect vibration; small adhesive weights or a prop balancer are common tools used by modelers.

Tuning effects: swapping to a 15x4E will change cruise rpm and throttle response compared with other sizes, with modest effects on climb and cruise performance. When you try a new prop, monitor motor temperature and ESC load on early flights and adjust battery choice or gear ratio only if needed to maintain safe operating conditions.