Mamba Monster dead?

[kulangflow]

Originally Posted by RBMike

Sorry for the off topic but could you please tell me your whole set-up & run time? car,Motor,gearing. I just finished an MBX5 conversion & am using A123-6s. Plan on testing later tonight.

3905 E-maxx - 9XL - 24/68
I only ran it for 15 minutes before I twisted a drive-shaft. I haven't had time to fix that yet so it sits for now.

[Sparky]

Good! I'm glad to hear that. I hope these few problumes are was just flukes.

New MMM on the way! Castle is the best, 1st round quirks aside ;)

[DRIFT_BUGGY]

Originally Posted by DickyT

New MMM on the way! Castle is the best, 1st round quirks aside ;)

That is great news

failed bec.

Originally Posted by DickyT

failed bec.

what is the solution for this problem?
Have any solution from CC yet? Please CC....

Originally Posted by finfin

what is the solution for this problem?
Have any solution from CC yet? Please CC....

They are sending me a new one. Patrick said in another thread that they have not received any back yet for post mortem diagnostics. I'll get mine to the as soon as I have the shipping materials.

[Arct1k]

Does it work it you leave the red wire in and use an Ubec. Can you reverse power the brain board I wonder....

No, i did not try ubec, was not soldering just to test, but pulled red wire and tried rx pack I had on hand. only got steering.

and it decided to castle link again, i reinstalled the drivers on my pc. but still will not power on, and the fan just twitches when you flip the power switch.

[Arct1k]

What happen if you lead the red wire in - Ie power ESC from rc pack...

[skellyo]

Originally Posted by Arct1k

What happen if you lead the red wire in - Ie power ESC from rc pack...

I wouldn't try that if it were me. With doing so, he'd be backfeeding voltage across the BEC circuit that has already failed and he measured to be 1.47V at the output. There's some sort of low impedance shunt in that circuit and applying an external Rx pack will apply 5V directly across that low impedance. I'd bet that there will be some smoke as a result.

[JerryF504]

Originally Posted by skellyo

I wouldn't try that if it were me. With doing so, he'd be backfeeding voltage across the BEC circuit that has already failed and he measured to be 1.47V at the output. There's some sort of low impedance shunt in that circuit and applying an external Rx pack will apply 5V directly across that low impedance. I'd bet that there will be some smoke as a result.

I say let it smoke.

[JerryF504]

Originally Posted by Arct1k

What happen if you lead the red wire in - Ie power ESC from rc pack...

Well, I just had the same problem. After the first 5 min of running my bec went to 1.09 volts. I came in and tried a receiver pack and everything runs fine off of it. My setup is a 9xl on 6s in a 3905.

[skellyo]

Originally Posted by JerryF504

Well, I just had the same problem. After the first 5 min of running my bec went to 1.09 volts. I came in and tried a receiver pack and everything runs fine off of it. My setup is a 9xl on 6s in a 3905.

Wow, I'm surprised. I'm curious as to how much current the Rx pack is having to provide in this instance. Does the Castle Link work on yours without having to power the ESC with a Rx pack?

[JerryF504]

Originally Posted by skellyo

Wow, I'm surprised. I'm curious as to how much current the Rx pack is having to provide in this instance. Does the Castle Link work on yours without having to power the ESC with a Rx pack?

Nope, cl doesn't even see that it is connected to the computer. The weird thing is after I connected the receiver pack I disconnected it to put a Castle bec in its place and tried it again and it worked normally for a few minutes then flaked out again.