I've read somewhere that other members have had problems with the metal fatiguing in this area.
I relate the failure of mine to me liking to help the motor spool up whilst on the smallest cog.
This must put a lot of torque strain on the point where the freewheel screws on to the cover.
S**t happens and I'm not going to start crying and moaning about quality etc..etc..etc..
What I do need is a solution

I still want to run a geared motor, but am now a bit wary about the MAC's freewheel side cover.
I can replace it, but I only reckon it will fail again in time. Luckily I didn't come off the bike when it failed, but I might not be so lucky next time

So I want to talk about the BMC rear motor. I hear that they are similar.
Is the construction of the BMC better than the MAC? and could I just drop in a BMC as a direct replacement to the MAC?
I want to keep Cellman's 9 fet 30A controller, as it is CADP compatible and it's programmed perfectly for me.