How did your MMMv2 die?

[JaySki]

First one - Calibrated, lined up the motor, hit the throttle in the basement(lightly), truck rolled about ten feet, touched reverse, then touched throttle again. Truck stuttered and then a small puff of smoke from right where the LEDs are.

Second one - Ran it on the street for about ten minutes last night... beautiful!
pulled it out tonight, got about 5 minutes and it stopped rolling. No throttle response, but steering still was operational. about 10 seconds later as I ran down the street to get to the car, it tried to roll again, like it initially tripped something and reset, as soon as it tried to roll again, it stopped and then no power. No lights, no steering, nothing.

Nothing hot what-so-ever.
E-revo
NEU 1515 1.5d - 22P 56 Spur
2X 2S2P 8000Mah Maxamps
futaba 3pm tx/rx

[e-mike]

2 v2 died.......i have 2 in mail...im scared

In a spectacular ball of fire. This was in my buddies truck.I convinced him to get a MMM,well told him it's the 1 he wanted.The second run on 4s with a 8xl.10 minutes into the run it was 115,15 minutes into the run the body started giving off an eary light.

[e-mike]

more and more mmmv2 died....the situation look like the mmmv1.....v3 it is possible!!????

[mtfly2000]

I would like for Castle to take some time, get copious amounts of feedback, and then release a v3 later on down the line. Or maybe an HV Monster that may make this one obsolete.

[JaySki]

Originally Posted by e-mike

more and more mmmv2 died....the situation look like the mmmv1.....v3 it is possible!!????

Can we keep this thread to what happened to your MMMv2?
I think it would be useful to all for seeing any patterns or any commonalities between these set ups.

[Dragonfueled]

Mine ran good for 10 minutes. Punched it from a stand still and it started to stutter then the truck stopped. Moments later smoke and flames. Everything was cool beforehand.

4s Neu 1515 1y E revo



Seems like they either die one of two ways... Smoke and flames or dust unresponsive..

I have to know...when these things flame on like this does it short out the lipo pack? If anyone knows please tell me thanks.

[Sammus]

Dragonfueled: how was your car geared? from what I understand, smoke and flames is pretty much always bad setup.

For starters A 1y on 4s is running quite low rpm, and you would have to gear it quite a way up to compensate.

coolrunnings: in the billion or so reports I've read of dead MMMs I'm yet to hear anyone mention a dead lipo, my guess would be no. In the fire and smoke death scenario, perhaps it shorts for a split second from the initial component failure, but the onrush of current kills everything else and any chance of there being a short.

[brushlessboy16]

BEC failed on mine after 10 mins, smoked
was running 5s and 8xl

[slimthelineman]

#1 died during calibration sent it to castle last tues. heard nothing.
#2 died yesterday at the track after about 10 laps, car lawn darted over a small double, no throttle or led's but servos work what the hell!!!

Sent a pm to patrick but he will not respond. No mods were performed on either v2 only thing i did was pull the sticker off the bottom so i could mount it securley. Very impressed with the controller when its running, i think the nitro guys realized how outdated they were yesterday when i passed all of them down the staright with that silent car.....

ERC8
MMM
1512 3d
6s 4000
15/46

[e-mike]

mine died after 1 min...i open the case i saw a foam glued on the lid...i remove that foam and i do a groove on the lid to prevent component issue (i was thinking it was my problem)i closed the case and my v2 work good for 3 minutes and it really die.....no rx,no servo nada.. the only thing that im able to do is to setup on my pc(castle link)


neu 1515 1,5d
mmmv2
2x3cell zippy-r 4800mah 25c

[BrianG]

Definitely a BEC issue there. The Link supplies the 5v power for the brains, so it makes sense that it works then. But when you hook it up to batteries, the brains are no longer powered so it doesn't work.

Me thinks Castle should forego the switching BEC thing altogether. They can use a cheap linear regulator for the brains (not much loss because of the really low current), and package a CCBEC in the box for a few $$$ more. Worth it IMO.

[brushlessboy16]

or remove the bec, make it opto and have an external connector for a UBEC (as said previously)

[slimthelineman]

so if i use a ccbec will i be able to get a whole pack through my next v2?