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-   -   Replacing traxxas EXV-2 with MM (https://www.rc-monster.com/forum/showthread.php?t=14448)

J3110 08.22.2008 01:29 PM

Replacing traxxas EXV-2 with MM
 
I'm having trouble getting my MM properly set to run the dual titans in my E-Maxx.
I've got the motors wired in parallel(both motor - to ESC black, both motor + to ESC red).
I have not tried doing the high powered brushed motor setup yet, but I doubt that is the issue here.
While this setup works fine for the most part(more powerful than the EVX-2), the issue is the braking.
If I used proportional braking w/ reverse lockout, it seems to forget about the braking part(no brakes) and after the 2 seconds of no throttle, I get reverse, but I'm usually still rolling forward, so it's basically like having an on/off switch for brakes that simply lock up the wheels=flip. :oops:
If I use the forward to brake to reverse setting, it's just forward to reverse.
Rest of my settings:
Brake amount - 50%
Reverse throttle - 50% (seems super slow)
Punch control - 30%
Drag brake - disabled
Start power - low
Motor timing - lowest (0)
Motor type - Brushed reversing
Arm timing - 2 seconds

Setup: I didn't do any motor syncing or anything like that. Just soldered connectors to the motor leads, configured the MM and ran it.
I'd previously been running a 7XL that seemed to lose it's ability to brake and started cogging more at low speeds. Added a cap to the ESC power leads, boosted brake power and motor start power which seemed to help for awhile, but the brakes suddenly faded again a few runs later.
Additionally, as the power switch had gotten ripped off at the PCB, I have the solder pads joined together now so the switch is constantly on as I don't have the dexterity to solder points that small.

Arct1k 08.22.2008 01:56 PM

Have you tried 100% brake?

J3110 08.22.2008 02:37 PM

Changed a few settings:
Brake amount - 100%
Reverse throttle - 100%
Punch control - disabled
Start power - High

Brakes seem to be trying to work, but still weak and I am able to use reverse before the motors have come to a complete stop which is not what the manual says the ESC should do.

I am wondering how much of this has to do with the fact that there are 2 motors and not just one hooked up.

Anyone got experience doing this?

Arct1k 08.22.2008 03:11 PM

Give CC a ring - (913) 390-6939

J3110 08.22.2008 07:24 PM

...throttle EPA on the TX. :oops:

hoovhartid 08.22.2008 10:34 PM

oops...

at least you figured it out.


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