Will a RCM heatsink keep the end of my Medusa on?

[eovnu87435ds]

hot glue would be fine

what about a c clamp that goes from the motor mount to the back of the motor?
or for that matter, zipties around the length of the can, and then some tape around the round part of the can to hold the zipties in place

or even mounting a piece of aluminum angle stock so that the angle sits up tight against the back of the motor