MMP Start Power

[Lauri]

Guys, the battery is good ;) It isn't new but I've just a week ago ran it with 5.5T modified TC and no problems like that. 5.5T on the same car uses 3000mAh from it and 17.5T on the same car uses only 1500mAh from it. It is 4800mAh and 4500mAh is the real capacity (4.2V to 3.5V @ 5A discharge).

Ok. I will then try to figure out what was the case. Patrick, could you only state some RPM range the Start Power is active? For an example up to 0 to 1000rpm?

Maybe it has something to do with the capacitors. With 5.5T I run Novak GTB and have external low imp caps (4x2200uF 16V). With MMP I didn't use external caps and MMP has very small internal ones. Maybe the LiPo didn't handle the pulses (you all know the theory).

We'll see in a weeks time...

Usually I am few tenths slower than our fastest guys. Now the MMP gave me those few tenths back. So its a nice "unfair advantage" one can have when running stock classes ;) Our fast guys have regular TC ESCs which aren't fast for stock class.

[Pdelcast]

Originally Posted by Lauri

Ok. I will then try to figure out what was the case. Patrick, could you only state some RPM range the Start Power is active? For an example up to 0 to 1000rpm?

Well, that has a complex answer -- it's related to the Kv of the motor -- high RPM, low turn count motors will be in "start" mode longer than low RPM high turn motors ... But in any case, the controller will drop out of "start power" controlled mode (and ramp current faster) in under a few hundred RPM worst-case. In some cases (like on a 17.5 turn motor) the controller is out of controlled start power at around 100RPM.

Thanx!

Patrick