I’m building a friction drive ebike, this motor I mentioned, will spin a 90mm longboard wheel (15/36 teeth) that will eventually spin the 20 inch bike wheel and I’m encountering a weird (or not) problem with this motor,
After configuration on vesc tool, everything work amazing and crazy fast, the longboard wheel almost explodes, But when I’m applying pressure/holding the longboard wheel with my hand, the motor seems to be struggling very much, almost uncapable to spin
I know I’m not using the full potential of the motor abilities, but I can still generate 5000watt, and yet, very weak.
You know why?
Running 10s, 5ah, 30c,
Limited to 80Ah - if it’s too low, let me know.
ERPM limited to 60,000 - if it’s not ok, let me know.
I would be very happy if you can hint me or provide me any lead.
Yeah what hummie said, plus if you gear down the speed the wheel will spin slower but with more torque to overcome resistance and with less of a current load on the motor. Those things want a huge amount of current and cooling, 150~200A from some specs and they’re often water cooled
I think they’re much lower pole count (I saw 6 pole in this size, other inrunners are 4 pole) so it’s more like 100k (edit: 86k max, I must have entered something wrong because I got 100.8 the first time)
I’m having a hard time understanding this. A friction drive is similar to a gear drive, which is a force multiplier, trading speed for torque. With his setup, using a 90mm wheel should accelerate the bike faster, but have a lower top speed than using a 200mm wheel right?