Mamba Max on 5s

[mkrusedc]

Originally Posted by Finnster

How do you have a 3yo MM when they came out a year ago ? lol.

14 cells will peak at ~20V, 5S 21V.

If they built over volt protection into the new escs I'm going to be really disappointed...

The Mamba Max last year? I bought a MM esc with A 7700kv motor as a set from my lhs almost a year before hurricane Katrina, which makes it 3 years ago.

Edit: The owner told me that one of his former employees works at Castle. Did I get some kind of deal and didn't know it?

[GriffinRU]

I have 2 generations of MambaMax (different FET's) and so far have not seen any limits.
But with time capacitors are loosing their properties making ESC more sensitive to voltage spikes.
And knowing that MambaMax capacitors are not rated for bigger motors, makes perfect sense that some ESC more or less sensitive to higher voltage due to the variation in capacitors parameters from batch to batch...

[mkrusedc]

Originally Posted by GriffinRU

But with time capacitors are loosing their properties making ESC more sensitive to voltage spikes.

GriffinRu,
Mine is about 3 years old and I have thermalled it 3 times. Would your mod help or I should get a Quark or an MGM?

[squeeforever]

Originally Posted by mkrusedc

GriffinRu,
Mine is about 3 years old and I have thermalled it 3 times. Would your mod help or I should get a Quark or an MGM?

I don't see how its 3 years old. They've only been out for about a year and a half, or slightly less, and the beta testers didn't even get them until the came out to the public...

[mkrusedc]

Originally Posted by squeeforever

I don't see how its 3 years old. They've only been out for about a year and a half, or slightly less, and the beta testers didn't even get them until the came out to the public...

Maybe my brain is getting fried in my old age. Either that or everything is a blur ,since hurricane Katrina, but you all are right I got it in December of 2006 according to my receipt.

[Patrick]

Originally Posted by mkrusedc

Maybe my brain is getting fried in my old age. Either that or everything is a blur ,since hurricane Katrina, but you all are right I got it in December of 2006 according to my receipt.

Woah! That's...umm...a bit off 3 years
Have you tried using it with the 2 trackpowers yet? If that doesn't work with a UBEC then something is strange. Fully charged they should be about 3 volts less than fully charged 14 cell nimh, so less likely to trigged some over voltage problem on start up.

[mkrusedc]

Originally Posted by Patrick

Woah! That's...umm...a bit off 3 years
Have you tried using it with the 2 trackpowers yet? If that doesn't work with a UBEC then something is strange. Fully charged they should be about 3 volts less than fully charged 14 cell nimh, so less likely to trigged some over voltage problem on start up.

Yeah pretty embarrassing. Don't tell my wife. She will check me in to a "home" somewhere.

I tried one 7 cell pack and I hate the cogging. Instead of fighting this I am going to get an MGM controller.... and hopefully no more hassles.


Thanks again for all the help.

[GriffinRU]

I will get new MambaMax and check it for any voltage monitoring features. It would be sad if CC do such a thing...

Originally Posted by mkrusedc

GriffinRu,
Mine is about 3 years old and I have thermalled it 3 times. Would your mod help or I should get a Quark or an MGM?

You can follow my steps and do the mod yourself as result you will get better heatsinking for ESC and less chance to thermal it.

As far 5S support, I would like to get ESC which hesitate to work right away, maybe there is something else, I've seen many time low voltage cutoff set to wrong value and this will do the blinking.

[mkrusedc]

Originally Posted by GriffinRU

As far 5S support, I would like to get ESC which hesitate to work right away, maybe there is something else, I've seen many time low voltage cutoff set to wrong value and this will do the blinking.

I set it low and high and even tried it with the LVC disabled. Still no go.