Dacflyer
1 W
Ok, I been working on a hub motor for a while here.
Had to reglue the magnets in the core.
I centered them all evenly, all magnets are defiantly in right, and reassembled, everything seems to feel fine, nothing scrubbing.
I ohm'd all the field windings, All checks out ok..
So I connected the harnesses for power and the hall sensors. I turned the unit on, so far so good. No smoke.
next i gently budged the throttle, it jumped for a second, then nothing. Uh oh, what's wrong.
Nothing obvious. I double checked things, all looked good.. i touched the throttle again, nothing...holding it just a tad and using my foot to roll the rotor, the motor erratically jumps , bumps hit, buzzes in certain spots.
Hmmm, Maybe something with the hall sensors, because the controller needs then to know what phase to drive. Kinda like timing.
So i get testing equipment out to start testing. i made up a lil jig to watch the hall sensors sequence. if i slowly rotate it, in certain spots the leds will sequence. 1,2,3,1,2,3 then other spots nothing maybe a single blink..
My question is...aren't the sensors supposed to sense every magnet in the ring ?
since i reglued the magnets, Is it possible the sensors aren't able to sense every magnet? If so how can i fix it? Suggestions.
I think once the sensors detect every magnet reliably, then it'll work..
I know I'll probably have to take one of the covers off,
Had to reglue the magnets in the core.
I centered them all evenly, all magnets are defiantly in right, and reassembled, everything seems to feel fine, nothing scrubbing.
I ohm'd all the field windings, All checks out ok..
So I connected the harnesses for power and the hall sensors. I turned the unit on, so far so good. No smoke.
next i gently budged the throttle, it jumped for a second, then nothing. Uh oh, what's wrong.
Nothing obvious. I double checked things, all looked good.. i touched the throttle again, nothing...holding it just a tad and using my foot to roll the rotor, the motor erratically jumps , bumps hit, buzzes in certain spots.
Hmmm, Maybe something with the hall sensors, because the controller needs then to know what phase to drive. Kinda like timing.
So i get testing equipment out to start testing. i made up a lil jig to watch the hall sensors sequence. if i slowly rotate it, in certain spots the leds will sequence. 1,2,3,1,2,3 then other spots nothing maybe a single blink..
My question is...aren't the sensors supposed to sense every magnet in the ring ?
since i reglued the magnets, Is it possible the sensors aren't able to sense every magnet? If so how can i fix it? Suggestions.
I think once the sensors detect every magnet reliably, then it'll work..
I know I'll probably have to take one of the covers off,