13S3P Samsung E35 with 30A max current BMS.Do you know how many amps your battery can safely discharge? What motor?
If your battery can handle it, just buy a new controller.
How exactly would i do that? But i already smoked one of my cheap'o china scooters BLDCCTRL - don't want to invest to much but and don't want to fry my 2nd one, because then 2 scoots / projects are dead..View attachment 336300
The shunt is the surface mount R002 resistor. The shunt is typically in series with the main battery negative wire. You may be able to solder another surface mount resistor on top of the existing one if you get the right size. Stock is 2 milliohms, so if you want a specific amount of increase, we can do the math on what resistance to place in parallel. Another 2 milliohm in parallel will double the limit, but that may be too much. 4 milliohms in parallel would give you 1.5x stock, which might be more likely to survive.
Can i buy that set? https://www.amazon.de/Benefischl-Sttcke-Legierung-Widerstand-Probe/dp/B0BLNRRN1X/It's a bit hard to see in the picture. Typically you can just lay another resistor on top of the existing one and solder the ends.
I think the outside climbed so much because of the rear drumbrake. :/ Got one motor in spare if it fries up the internals.75C is pretty hot. Inside it's going to be even hotter. I wouldn't let it go higher than that. I try to keep mine below 60C.
Well thats to much investment and time spent in this particular model if the motor really sucks that hard.There are some VESC based controllers that are very compact, but they aren't cheap and there is a lot of programming involved to set them up.
If you use wire, you are basically preventing the controller from measuring current at all, and so it can't protect itself at all from overcurrent.Anyways parallel means soldering on top of it? Maybe some type of wire which would do the job?