Motor Bounce for FPV racedrone

I am sick of having my FPV quad motors bend and bearings rattling after a day of garage racing. The motor protectors that are currently out there only protect the bell, the part that hardly ever hits something.

The broken motors are mainly caused by impacts between the hard motor axle and the hard concrete you are crashing on. both those things don't flex at all resulting in bend axle or rattling bearings. These little motor bouncers give the top of the motor about 3mm for deaccelerating the