Replacement 9x3.7SF Slow-Flyer Propeller APC AP09037SF  [AP09037SF]

APC PROPELLER 9x3.7SF ELECTRIC SLOW FLYER (INDOOR 3D AEROBATICS)
Price:
CAD$5.32
Brand:
APC
Model:
AP09037SF
Condition:
Brand New
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Replacement 9x3.7 Slow-Flyer Prop

This APC AP09037SF 9x3.7SF propeller is intended for electric slow-flyer models flown in indoor 3D aerobatics. The molded composite blade shape is engineered to deliver predictable low-speed thrust and smooth, controllable response rather than maximizing top-end speed.

Fitting is straightforward on standard slow-flyer setups: confirm prop rotation and pitch, secure the prop to the motor shaft with the correct hub or collet, and ensure the adapter or prop saver engages fully to prevent play that can create vibration. Use the right shaft adapter size for a snug fit.

Balance and trim are important for precise slow 3D flight. Check static balance on a low-speed balancer and remove minimal material from the heavier tip if needed. With this fixed-pitch prop, concentrate on motor mount stiffness and vibration damping rather than changing pitch to refine handling.

Packing block not applicable.

How do I fit the APC AP09037SF to my motor?

Match the propeller rotation and pitch to the motor shaft, slide on the correct hub or collet, and tighten the retaining nut or prop saver. Verify there is no axial or radial play by checking the adapter size and seating before test running.

What is the recommended way to balance this propeller?

Use a low-speed prop balancer to identify the heavy tip, then remove very small amounts of material with fine sanding or trimming. Recheck after each adjustment and inspect for cracks or delamination before flying.

Will this prop change motor or ESC settings I should use?

As a fixed-pitch slow-flyer prop it increases low-RPM load; monitor motor temperature on initial flights and adjust throttle endpoints or idle settings on your ESC if required to keep temperatures safe.

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