MMM Explodes into FLAMES!

[Sammus]

Originally Posted by muted

If it wasn't for the pictures of the melted monster, I probably wouldn't have believed it. Until today when mine burst into flames just after arming!

yep, another one here. Reading all these stories I kept thinking of how to attribute it to user error, till mine did it today.

Brand new MMM, ran about 20min in my revo geared very conservatively. Went to plug in my battery and it made a much bigger spark than normal. melted one of the metal connectors and some of the solder in the battery packs (breaking the circuit).

I plugged it in on the bench with 2s A123, and it armed fine, made tones etc. Then I plugged in 6s lipo - big spark and a flame (about the size of a cigarette lighter flame) out from the where the neg battery wire goes in. Unplug the battery, the flame goes out. Plug in 3s lipo - arms fine, plays tones and the right lights etc, but I can see all sparks and stuff inside next to that neg battery lead, and something glowing. It still seemed to work, I don't really wanna push my luck though so I've boxed it ready to ship out asap.

Sounds like it could be a fet shorting or something thats causing this - weird that it did it just on arming, and even after the flames, it still seemed to be working.

[shaunjohnson]

^^ that is some good info and testing
could prove valuable to the castle staff, maby put it in the MMM failure sticky at the top of the forum?

[muted]

This will explain it all....
http://www.rc-monster.com/forum/showthread.php?t=21973