Mamba max / dx3r problem

[streethot]

I had have a problem very similar on my Kyosho TF5, I turned it on and every time I steer the car, mamba turned itseld off.......so.......to not harm the esc.....i put a external bec.....solved.......every time i tried to steer it was worst then before until the esc didnt turn on nevermore........i dont know the problem but i wont risk a good mm because its bec........btw i think mm bec is weak......and should be 6V not 5V......

[BrianG]

Originally Posted by streethot

...and should be 6V not 5V......

Even LDO linear regulators need at least 0.5 above their rating to work right, and 2s lipo or 6 NiMH cells can get down to ~6v, which would't work well. So, they use 5v and problem solved. However, being linear, efficiency is poor at anything above 2s/6cells and should use an external switching BEC to avoid thermalling the ESC BEC...