The main point of this post is to show an optional way to mount motors that allows you to adjust down and right thrust. This may be needed to improve flight characteristics of some models. In this example I made a new firewall from aircraft plywood.
These are two ways to mount the motor on the firewall. The FT motors come with an X-Mount that can be set vertical or diagonal. The motors come with tiny wood screws and the firewalls have pre-drilled holes for the wood screws. Over time and with vibration wood screws tend to loosen up and back out resulting in a wobbly motor. For me a better way to mount the motor is to set the X-Mount on a diagonal. You’ll need to drill new holes, use blind nuts (also called T-nuts) and socket head cap screws.
The diagonal mount can be used to provide just down thrust, just right thrust, or both down and right thrust. It is a bit easier than using the vertical mount.
Looking from the front, if you put washers under the top of the mount, you get down thrust. If you put washers under the right side of the mount, you get right thrust. And if you put two washers under the upper right corner and one washer each under the upper left corner and lower right corner, you get both down and right thrust. No washers under the lower left corner. If you decided to make a firewall for the diagonal mount, you will need to relocate the hole that the motor wiring goes through. Click HERE to see what the blind nuts look like from behind the fire wall.