Help with MM and Medusa 50x3300 - RC-Monster Forums

GO-RIDE.com · **Help with MM and Medusa 50x3300 -** 03.18.2009, 01:47 PM

Hey guys,

I've had a MM and Medusa 50x3300 on Rhino 3S 4000 25C lipos for a number of months. It's in a CRT.5 with truck tires. It always cogged a bit, but was crazy powerfull and cleared the big jumps on our track with ease. A few days ago the MM popped out of it's case. I put it back in with a zip-tie and the car was now cogging really badly and heating up quickly.

I hooked the MM up to the Castlelink and updated the firmware. After that the car ran better, but still cogs more than it once did and does not seem to be as powerfull. I've since tried all sorts of punch control, start up, and timing settings, but it still cogs more than it did and doesn't seem to have the top power it once did.

Running outdoors on a smaller track the motor was 110F and the ESC 155 - 160F.

Any ideas?

BrianG · 03.18.2009, 03:19 PM

I'd check all your motor connections. This includes the bullet connectors (could be dirty), the bullet solder connections, the battery plug (cold solder joint and/or dirty contacts, and the solder connections where the wires meet the ESC.

If that's not it, you might have weakened/damaged some of the FETs. My setup (3s on the 3300) in the CRT.5 runs prefectly fine with no cogging at all.

GO-RIDE.com · 03.18.2009, 03:54 PM

Quote:

Originally Posted by BrianG

I'd check all your motor connections. This includes the bullet connectors (could be dirty), the bullet solder connections, the battery plug (cold solder joint and/or dirty contacts, and the solder connections where the wires meet the ESC.

If that's not it, you might have weakened/damaged some of the FETs. My setup (3s on the 3300) in the CRT.5 runs prefectly fine with no cogging at all.

I've been putting off actually checking the solder connections as all but the Deans battery plug are factory soldered from Castle and Medusa. I've tugged on the connections to check for loose joints, but I'll also clean the bullets. My guess is that when the esc popped out of it's case it was bouncing around in the vehicle and something grounded or was damage. At his momment my MMM V2 is at Caslte for replacement and I'm hoping my MM will last until the MMM V3 arrives.