MambaMax ESC quirk - RC-Monster Forums

crazyjr · 11.17.2006, 04:09 AM

My glitch with the 5700 mamba was like 1 and 3, never had 2 happen, but always wondered if it was possible

Finnster · 11.17.2006, 11:09 PM

I've had that occational glitch, like a momentary brake stab. Init thought it was a Rx problem, and started moving things around. Went away a bit w/ an FM and Rx pack, but it happens every now and then (unfortuantely after I nail the throotle and get going then, whack, then back to accel.

:032:

BrianG · 11.18.2006, 01:22 AM

I was reading back through this thread and just thought of something that may help. This quote from GD got me thinking:

Quote:

Originally Posted by glassdoctor

Castle's response so far is that they are blaming the connectors... they said that one guy reported a similar issue and that the problem went away when he direct soldered the motor. They think possibly the very small low voltage pulses that the MM uses to get info from the motor may not "like" the connectors. I tried putting a little solder "jumper" on my connectors to see if that would help and my buddy replaced his connectors with Corally style gold plugs that are similar to the 4mm stock ones but are a different (we think superior) design and quality. But we still see the issue.

What if there is too much noise on the motor/ESC wires under high current during startup so the ESC has a hard time correctly reading the feedback pulses? Or maybe there is some cross-induction of this feedback confusing the controller?

What I am going to try tomorrow is somehow shielding each motor wire from each other and then trying to duplicate the issue I'm having. However, my symptoms are not very consistent so it might be tough.

It's a shot in the dark, but worth a try. I'll report back tomorrow...

phildogg · 12.03.2006, 07:35 PM

Quote:

Originally Posted by Finnster

I've had that occational glitch, like a momentary brake stab. Init thought it was a Rx problem, and started moving things around. Went away a bit w/ an FM and Rx pack, but it happens every now and then (unfortuantely after I nail the throotle and get going then, whack, then back to accel.

:032:

this is the exact same prob I'm having also.. running hard then a brake stab,next thing I know its on the lid sliding..
phil