Medusa Endbell Mod

[BrianG]

Since Medusa is not honoring any more warranties, I figure I had to fix my motor myself. I was running my XT8 truggy in reverse when I hit something quite hard. This caused the rotor to pop the rear endcap off. The endcap is not crimped or anything, just glued. So, until Mike has his heatsink/clamps available, I figured I'd do what I can to fix it.

First, I found some screws that would be small enough to work. As you can see, length is very important so they don't hit the coils, so I dremeled one down.




Then, I measured about 2.5mm from the end of the motor can (excluding the end cap lid) and drilled two 1/16" holes on each side of the motor just far enough to go through the outer motor can, and then mark the endcap, but not all the way through (to avoid hitting the coils).




I then removed the endcap and finished the holes in the endcap.




Then, I pulled the endcap as far as possible before it would pop off and gooped a bunch of red locktite around the edge. To make sure the red lock-tite would work, I called Locktite and spoke to a tech. After explaining my situation and application, they suggested the red for its heat properties, and recommended the gel to avoid it dripping where it shouldn't.




After snapping the endcap in place, wiping off the excess locktite, and screwing the trimmed screws in place.




I probably should have used three screws, but couldn't find one small enough anywhere. I just happened to have the two I used in my screws bin.

Anyway, after letting this cure overnight and most of today, I made an experimental solid tap on the pinion side of the rotor and it seems to be solid. A little driving around worked fine too. Time will tell if this will work long-term (or until CC releases their 1800kv motor).