The bottom cover looks like a good plan though, have you been having problems with just a bottom cover like this @taz?
I don’t have any cover for the motors.
On the MTB I use the SK8 149kV and I feel they get hotter faster than the Maytech but I will keep them until they crap out.
I cannot get my motors to overheat, May tech 6374’s. Gear drive so that may be why?
had a nice ride out… however I had the exact same stuttering again.
Motors did hit 100°C again.
So not sure how to fix that problem
However the covers on the bottom protected my motors very well from rocks !
Fixed it for you
What are your vesc settings?
Motor temp cutoff start
Motor temp cutoff end
Acceleration temperature decrease
Haha yes… when my motors get hot they have climbed 800 meters altitude at a rocky mountain hiking trail… I would rather be surprised if they don’t get hot actually.
I will check my settings and post back later @taz
From what I understand it should start throttling the motor at around 100C.
You should not have set the cut off start temperature so close to the cut off end. That way instead of gradually decreasing power to the motors to give them a chance to recover you will get cut offs.
Also, I would not mess with the default mosfet temperature settings.
Fun fact… I didn’t touch those settings…
What are yours ? Show me please and I will try to change mine accordingly
I don’t have my board with the VESC6 with me right now but these are the default settings on the vesc tool.
I would go 80 / 100C for the mosfets and 100/115C for the motors.
Leave the acceleration decrease at 15%
Had a small crash today and my GT2B broke and I lost a couple of parts of the case
But since I was unlucky already today with my portable charger I decided to not give up on this one…
Haha fantastic! Well done mate. Any more plans for this board?
Well… not really - finetuning and getting the hang of it mainly…
I am happy with everything as it is now… My main concern was the damage I suffer when going on rocky mountain trails but the bottom cover that I made today now protects me very well…
So just need to repair my portable charger and do some tweaks here and there and be a happy camper
The default temperature settings seem to be 85/100C
I mean… this might be right for a longboard that goes on bicycle tracks in the city…
Since I live in a hilly city, I don’t see a big difference between on and off road. Actually on road my motor temperatures are higher since I can be a lot more aggressive with the throttle.
Also the temperature the motors can handle is the same.
I wish I had a solution for you. I suffer from the same problem. At least the Vesc6 on the Trampa keep their cool unlike the Focboxes on my Evo.
Well it’s no real big issue… like I mentioned the stuttering starts when I already climbed around 700 meters altitude.
However I will try the 100°C setting and see if it get’s worse.
I hope the motors will hold up and maybe next time I will bring a temp sensor and see what the temperature on the motor housing actually reads.
I am quite happy with everything but of course I might try some tweaks here and there to reduce the heat.
To what degree does the Motor Current setting influence everything ?
I have it set to 80A but according to Metr App I hit more than 80A quite a few times…
I tried the IR thermometer route but since the sensors are inside the stator and it is measuring on the outside of the can, I could not come to any valuable conclusions.
The motor current does influence but not much.
However I am afraid that as the motors get hotter it is easier to saturate the stator and start the stuttering.
So I would try lowering the current too.
This sucks though because you loose too much start up torque which is necessary in mountains