Wife burned up my Mamba Max on 5S over the holiday... :(

[phildogg]

Originally Posted by Dafni

Yeah. I mean it's a Mamba 25, as in 25 amps continuous. This controller is smaller as an UBEC!!

What motor was on it, Cheater? A CM-2080?? LOL

I know what ya mean used to run a mamba in my rc18t.. lol not my maxx.
phil:027:

roughly speed 400 size motor, but only 850kv (lots of torque per amp). setups like this on 2 or 3s are used by rock crawlers, their old setups were like 55 turn lathe motors and 6cell nimh.

My original idea was something like a 4 to 6 pole inrunner 2000-3000kv 400 size on 4 or 5s 1500-1800 lipo in a tenth scale t.c. or stadium truck. I'm currently racing T.C. with a M.M. 5700 geared low on 6cell nimh and only using 2300-2800mah for a 5 min. race. Thats around 250watts average. I wanted to switch to lipo and got to thinking, if voltage is optimized for a particular motor the motor wouldn,t have to be nearly as big physicaly, and with lipos + a smaller motor, the 50 oz. T.C. would be easily 10 oz. lighter, so if the new setup could handle 200watt. average it would be great, + less tire wear, and less likely to break when bouncing of the walls of our tight carpet track. Then started calculating average amp draws @ diffrent voltages (5s roughly 200watt/17volt=12amp. The mamba 25 is rated at 25amp continuos and I believe 50amp burst with way higher short spikes.
The #s sound good, but not many people are trying stuff like this with the little controler, so I didn't want to buy a motor and new batts. if it wouldn't work. I had the outrunner on an airplane (the only motor I own that could live with 5s) and the 25 in my rc18t + some old 1800 2 and 3s packs. I couldn,t easily get enough gear in my tenth scales to effectively test the controller with this motor(850kv), so I stuck it in the e-maxx and started of with a crawler setup. Then slowly added more gear and more voltage trying to get a feel for what this controller could handle and stay cool. 5s worked for a little while, dead now. considering going back to 3 or 4s getting good bats and motor and trying again, in the stadium truck, would like to hear some more opinions and any details of any similair setups. http://rc-monster.com/forum/showthread.php?t=4823