For those who want the gritty details...

[FG101C]

I think the fans are failing because the fan rotor gets wedged against the top of the esc case. I found this out putting a novak fan in, a tiny bit of fuel line or some small spacers should fix this. Will try it later and see.

[FG101C]

The fan gets wedged up so the rotor is hitting the center part of the "cage" freezes the fan and it burns out.

[RBMike]

Patrick, I did what FG101C said below & have not broken that fan yet. The blades just get too close to the cover. Also the SMT connector used too connect the fan to the PCB is going to be a problem I think (mine came off when the fan was not even pluged into it).

Thanks for listening
Mike

Originally Posted by FG101C

I think the fans are failing because the fan rotor gets wedged against the top of the esc case. I found this out putting a novak fan in, a tiny bit of fuel line or some small spacers should fix this.

[killjoyken]

Ah. Good, two more things to look out for regarding the fan. Time to pop the cases off again and do some preventative maintenance.

I finally got my 2nd MMM to program. I ended up reseting the parameters on my DX3R and the MMM found neutral. I'm still not sure why I didn't have this problem with my first MMM, but eveything's working fine now.

Thanks for all your input Patrick. It's great having your help in this forum!