Why not bolt the VESC to the rear of the board and keep the phase leads short and just make the battery lead 1.5m? Your board would still be super light and you don’t need to worry about phase lead or sensor wire issues.
Have you considered the flipsky dual 6.6 200a? This has been my preferred VESC. It’s rock solid.
Because ESCs aren’t that resilient against voltage spikes battery side, and motors can handle just about any voltage spike we can throw at them.
What I’m not sure about, is what happens to current flowing back from the motors, and also what about regen braking and voltage spikes from that.
Following this thread for someone more knowledgeable to explain this!
Haha maybe the one you got was rock solid… there are plenty of people out there that weren’t so lucky. I’d rather push than run a board with a flipsky product on it.
Just make sure you do the detection with the long leads, and preferably with them stretched in the same way they are when you ride so the inductance is measured correctly
I’m more worried about voltage spikes going back to the ESC than stator position calculations. At least the phase wires are 10AWG so less internal resistance than 12AWG.
where’s the lube!?
Used for a… Another purpose…
I wouldn’t worry about, if it was on the battery side, then it can be a problem, but unless you are running 10’s of meters, the inductance of the longer wire is around and order of magnitude smaller than the motor itself
How did you do this?
Cleaned out for the photo, wouldn’t have mattered anyway, reportedly I was running the wrong backlash, or the motor wasn’t tight enough and moved.
Due to the windings, and the length of wire in there? I thought tightly wound wires reduces the inductance thereof, as opposed to a long piece that’s not wound?
It’s the opposite, when you coil a wire, the inductance increases a lot compared to it being just a straight line
Awesome! So I really have nothing to fear regarding voltage spikes! What about motor position calculation as alluded to by @itsrow here?
That could be something to keep an eye on since you are at 12S, I would slowly raise the braking currents while logging to see what happens
Capacitor on the phase side doesn’t makes sense since it’s AC
The something to keep an eye on you’re talking about is the micro-stuttering, not the ESC being fried, right?
Yeah, and voltage spikes battery side, unfortunately only plugging VESC tool over USB would give phase voltage
I’m getting a metr Pro, anything I should put on the dashboard to keep an eye on?
It helps, but only the VESC tool allows you to capture the BEMF, that is what would be a problem for your setup
But keep in mind that the spike would only become a problem when your motor is spinning at it’s maximum, if you really go full speed all the time
