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E-flite Apprentice 15e motor mount for an E-flite Power 25

Price: $15.99
  • Model: A100059
  • Units in Stock: 1
  • Manufactured by: Custom RC Parts

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The Custom RC Parts designed motor mount for the E-flite Apprentice.

This mount allows you to install an E-flite Power 25 on the plane..

It is machined out of 6061-T6 billet Aluminum (unanodized). The stock thrust angle is machined into the mount.

To maintain the stock flying characteristics the motor is in the same position as the stock motor which is off-center towards the left side of the plane.


6061-T6 Aluminum.

19mm X 25mm slots for 3mm fasteners.

14.0mm clearance hole.

Designed for motors with an operating length "F" of 67mm.

Weight: 14 gr

E-flite Power 25
Stock motor

E-flite Apprentice 15e

The thrust angle is not compatible with the Apprentice S 15e.

You can find the E-flite Apprentice S 15e mounts here..

The motor is positioned in the same place that the stock motor was. There is no need to use any spacers with this mount.

The E-flite Power 15 is used in this tutorial. The Power 25 installation is exactly the same.


Here are the items that you will receive with your new motor mount. A custom CNC machined motor mount (please note that these mounts are no longer anodized), 4X M3-.5 X 6 Socket Head Cap Screws or M3-.5 X 6 Phillip Pan Head Screws. You will reuse the screws that attach the mount to the plane.


Install the motor mount as shown in the picture. Screw the fasteners in until they contact the motor mount then back them out a quarter turn. Ensure that the collar on the motor is centered in the clearance hole in the motor mount. Now tighten the fasteners. Once the motor is secured to the mount, spin the motor to make sure that there are no interferences. It's a good idea to use some liquid thread retention like Loctite.


Install the motor as shown in the picture.
CAUTION: You are installing fasteners into plastic. Do not over tighten the fasteners.
NOTE: Reuse the screws that came with your plane to attach the mount to the plane.

Now route the wires through the firewall.


The motor and mount installed on the plane.


Install the cowl and check for interferences. NOTE: The motor is in the same position as the stock motor. It is off center towards the left side of the plane.


Here is a view of the stock motor installed for comparison.


Install the prop adapter and prop and you are all set!

As with any change to your plane, before flying ensure that the center of gravity is correct!