APC Narrow Blade Propeller AP17125N 17x12.5N for 140-Pattern Fixed-Wing  [AP17125N]

The APC AP17125N 17x12.5N narrow blade propeller is supplied as a spare sized specifically for 140-pattern fixed-wing aircraft. Its slimmer blade changes the lift and drag balance compared with wider options, which can influence thrust and RPM characteristics on scale and sport models.

To install, ensure your spinner and prop adapter accept the 140-pattern bolt circle, secure the prop with the correct nut and washers for your shaft, and perform static and dynamic balance checks before flying. Carry out standard pre-flight verifications such as confirming thread direction, nut torque, and clearance for spinners and control surfaces.

In terms of setup the narrow blade commonly shifts the motor load toward higher RPM and reduces blade-induced drag at cruising speed, affecting throttle response and climb behaviour. Combine prop balancing with temperature checks on motor and ESC while testing to determine the best configuration for your model.