APC RC Airplane Composite Propeller Motor Shaft Adapter Bushings Explained

All of the APC RC Airplane Propellers include a set of motor shaft adapter bushings, so that they can be used on a variety of different RC airplane motor shafts. It is important to use the correct adapter bushing so your propeller fits snugly on the motor shaft.

Which Motor Shaft Adapter Bushing Do I Use?

To determine which adapter you should use you have to know the shaft diameter the motor you’re using. For example, if your motor has a shaft diameter of 0.313in (7.95mm) then you need to use the APC adapter bushing with an inside diameter of 0.313in.

Inside Diameters of the Motor Shaft Adapter Bushings

* All the APC adapter bushings have the same outside diameter.

Precision Motor Shaft Mounting Procedure

1. Each APC propeller’s hub may be precisely adapted to motor shaft diameters of 0.128in, 0.158in, 0.197in and 0.313in by using bushings 1 through 5.
2. Remove the desired locating ring by twisting.
3. Insert the ring with draft angle as shown.
4. The propeller hubs may be adapted to other shaft diameters by reaming the non-precision 0.250in (1/4in, 6.35mm) hole to the size you need.

Never Drill a Propeller, Use a Reamer Instead

In the instructions that come with each propeller, APC tells customers to “drill to desired diameter”. Never drill a propeller. A drill will make an asymmetrical hole and ruin the propeller’s balance. A reamer will make a perfectly centered hole.

Where to Buy APC Electric RC Airplane Propellers

Draganfly Innovations Inc. has a huge selection of APC Electric RC Airplane Propellers. The three types are Slow Flyer, Wide Electric and Electric and range in size from 6 to 24in.
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