Motor attachment techniques — Secure your power system

It should be easy, right? Buy a plane, buy a motor, and bolt them together. That's the way it should be, but sometimes it's a bit more involved. We're lucky that most manufacturers have already worked out the best way to mount a motor to their airframes, and many of the electric offerings come with the motor installed or include a mount for the recommended motor size. What about the ones that don't or that...