Could the ferrofluid be causing the clutch rollers (or sprags) to stick?brumbrum wrote: ↑Jan 19, 2018 10:57 amHere’s the low down
Cromotor, all good for past 2 years until now. added ferrofluid And hubsink, took for test ride, ok for 15 minutes doing hard start stops up to 120 amp to help heat motor and check temps. All good and then the sound came along. It happens with any sudden amp increase but not so if very gently upping amps, there is also loss of power when the noise happens as if a clutch is slipping. It also makes the noise when using regen braking. I think adding the ferrofluid is just a coincidence and not the cause. I had to take one side panel off the motor to add the ff, but it was the side that does not have the phase wires, just the spare set of halls.
Is it a phase wire issue? Or something else?
Two 30 second videos (ignore the footage)
first with sine wave....
Then with sensorless activated on the adaptto....
I will have to crack open the phase wire side of the motor to check.
Any help pointing me in right direction, or any experience with same symptoms is much appreciated in replies.
Yeah , i know theres no clutch, just has sensation like clutch slipping.
Sorry for the apparently dumb question.
Darn! What a pita. Looks like a complete strip down. Just as i am in the middle of building a new battpack with 30Q's.
At the moment I'm only using 20A @ 36V and the motor temp is staying pretty much at ambient.brumbrum wrote: ↑Jan 20, 2018 7:05 am@Buk, not sure to be honest, but if you are getting a geared motor so hot that you need ff you are probably going to melt/chew up the nylon cogs, and are probably wildly over amping and overvolting the motor. Or you may have your wiring incorrect. My motor gets too hot to hold my hand on the surface... 130 degrees C
Learned my lesson there when cracking the first magnet i moved. Realised straightaway that yoi must slide them in and out of position. Thankfully a friend had a couple of spares.
I numbered them 1 to 46. Though i also noticed that they repel if trying to mount them the wrong way next to each other.
Haah, yeah,, i seemed to have rounded things up quite nicely!
Got to be close to 1k miles, but only used for off roading on weekends. Its taken a beating for sure. As long as my adaptto maxe controller doesnt crap out again it should be good for some time yet.