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-   -   Why didn't it die? (https://www.rc-monster.com/forum/showthread.php?t=24624)

V0RT3X 11.22.2009 09:06 AM

Why didn't it die?
 
Was running and jumping down at the park today(grass). I hit a jump and landed badly and it did over 10 cartwheels on grass. Run down, flip it over - nothing. Guess the connectors unplugged. Open the lid, the connectors are together. Then I see the negative bullet on the MMM is unplugged (V2). With the bullet loose I tried to disconnect the battery and all of a sudden the neg. plug touched one of the motor bullets and a spark flew up.(no smoke) Then I started thinking where should I order my new MMM and if CC will replace my V2.:oh: I carefully unplug the batts and also the motor connections. Then, with even more care I plug the lipos back in(thought it would catch fire:intello:) and the lights come up. Plug everything back and it's working normal.

I was running 6S.

Here's what happened to the plugs that touched:

http://www.shrani.si/f/2D/9c/4MqvCMNx/1/dscn1101.jpg http://www.shrani.si/f/3F/Kx/3fD9E8x1/dscn1102.jpg



Now, shouldn't it be dead from the hit?

coolhandcountry 11.22.2009 09:19 AM

Maybe a little luck and good build quality. :yes:

mistercrash 11.22.2009 10:12 AM

I ran a MMM V3 on 10S by mistake until it thermalled. I go get the truck to investigate and see the mistake I made. Plug two 5S in series. :whistle: Other than the TVS that is probably blown, the ESC still runs like a champ. They are tough devices.

himalaya 11.23.2009 03:51 AM

What battery pack were you running ?

kalbien 11.23.2009 05:58 AM

Quote:

Originally Posted by V0RT3X (Post 334581)


Now, shouldn't it be dead from the hit?

well you very lucky and using either quite discharged or low C batteries... I did connected +- connector on 5s 3300 vx hyperions and same sized connector as you have there just dissapeared. No idea where, but I was like "WTF, laser?"

batteries survived just fine however :)

V0RT3X 11.23.2009 11:10 AM

Quote:

Originally Posted by himalaya (Post 334773)
What battery pack were you running ?

2x3S Flightmax 5000 25C. When I got home the voltage was around 3.7V per cell.

Funny thing is that my Accucel 6 died when I wanted to charge the second battery.:sarcastic: (resets when it starts to charge)

suicideneil 11.23.2009 06:12 PM

Sheer luck, and hard-as-nails esc :yes:


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