A Last-Minute Adjustment To The Towel's Motor Mount

Although the test flights were successful, the planes all still had problems with the motor mount flexing. The spinning motor put force on the vertical part of the bracket, shown below with arrow, bending it inward and making the plane hard to control. We brainstormed ideas on how to reinforce the bracket at the park, and decided to meet one last time before Leo took the plane to the Maker Faire.

 Doug had designed and printed a two-part reinforcement on his printer. The flat piece on the left goes underneath the foam board, while the piece on the right sits on top, behind the aluminum angle stock to keep it from bending backwards.

 With the above parts, 1/16" plywood, and two-part epoxy, the motors were remounted.

And voilà! The motor spins with no flex on the bracket now: