Mamba Pro - for all you tech-heads

[Sammus]

Originally Posted by littlegiant

It is supposed to be rated at 100A continuous right? I don't see how the MM can do 100A cont without any advance cooling.

I assuming your measuring current draw somehow to make that claim? I'd be interested in hearing more about what lead you to that conclusion. I've unloaded a 4600mah pack through an MM in under 4 minutes, which is an average current of at least 69A. It got a pretty warm, not too hot though. I had nothing to measure temp with, but it was 35C ambient so I always thought on a cooler day that 100A wouldn't be out of the question....

[J57ltr]

What is continuous? I used to repair/test amplifiers and most of them could not sustain their rated RMS output for more than 10 minutes without going into thermal, if you put a fan on them they would run for longer. Granted they are much less efficient than an ESC, but the heatsinking is HUGE compared to an ESC. This testing was done in a 72* shop with a Astron 200 amp power supply. These weren’t cheap amps either they were PPI/Orion/G&S (The HCCA’s forget it), Rockford Fosgate, Soundstream, A/D/S, and a lot of other high end amps and some cheap ones as well. The only ones I wasn’t able to thermal in 10 minutes were the ones made by Zed (Autotek/Hi-Fonics/Rodek/Earthquake). And I am not talking little amps I even had a Hifonics Colossus, and Zues and Autotek BTS7600 in for repair, Those were 900W-1800W amps

Are they rated continuously with a battery because there is no way that that small of a footprint will sustain than much power continuously? I know the heatsinking ability of the Mamba Max it sucks the heat right out of a soldering iron.

I'm just asking.

Jeff

[lutach]

Originally Posted by J57ltr

What is continuous? I used to repair/test amplifiers and most of them could not sustain their rated RMS output for more than 10 minutes without going into thermal, if you put a fan on them they would run for longer. Granted they are much less efficient than an ESC, but the heatsinking is HUGE compared to an ESC. This testing was done in a 72* shop with a Astron 200 amp power supply. These weren’t cheap amps either they were PPI/Orion/G&S (The HCCA’s forget it), Rockford Fosgate, Soundstream, A/D/S, and a lot of other high end amps and some cheap ones as well. The only ones I wasn’t able to thermal in 10 minutes were the ones made by Zed (Autotek/Hi-Fonics/Rodek/Earthquake). And I am not talking little amps I even had a Hifonics Colossus, and Zues and Autotek BTS7600 in for repair, Those were 900W-1800W amps

Are they rated continuously with a battery because there is no way that that small of a footprint will sustain than much power continuously? I know the heatsinking ability of the Mamba Max it sucks the heat right out of a soldering iron.

I'm just asking.

Jeff

I used to love my what so called cheating AMPs lol. I still have 2 25 watt cheating AMP, one is a Orion HCCA 225 and the other I'm not sure what brand it is, but it out lasted the Orion. I had a few of the HiFonics Colossus and a couple of Autoteks through my audio years and they were awesome. I now have a few more powerful AMPs, but don't have the desire for a loud system at the moment lol.

A lot of people are still confused about ratings and that;s why Castle and Tekin don't really post them. I like to use the term continuous peak or burst which will basically mean that. Example: Mamba Monster rated for 120A, use this for a max peak amp when in hard acceleration (A data recorder comes handy to set a base number). I know the ESC will easily go over that rating for an instant, but I rather stay safe. I'm still searching for a car ESC and motor that can provide a real 100A constant and handle the same continuous amps. It has to be small or about the size the pop tarts as I have the vehicle to accommodate one.

[littlegiant]

Originally Posted by Sammus

I assuming your measuring current draw somehow to make that claim? I'd be interested in hearing more about what lead you to that conclusion. I've unloaded a 4600mah pack through an MM in under 4 minutes, which is an average current of at least 69A. It got a pretty warm, not too hot though. I had nothing to measure temp with, but it was 35C ambient so I always thought on a cooler day that 100A wouldn't be out of the question....

Ok now that is weird. I am using the MM in my 1/10 buggy that weighs around 1.7Kg. Using watts up meter for peak current. Peaks at around 73A on 2 S lipo so I am thinking that average current is probably alot lower. 10 - 30A I supposed. With a fan, temp taken was around 61C at an ambient temp of 30-32C. I was told that a 60C MM in a 1/10 is the normal temp. I guess that is normal then. But considering current peaking at 73A on high traction surface, I am not really sure if the MM can handle 100A continuous without thermalling. Maybe I have a defected MM? I just got it as a replacement for an old MM in a non-warrenty claim and it looks totally brand new. As far as I remember, the old MM wasn't running as hot as this current one. Maybe it is the new firmware?