SCARY shit, full on brakes on throttle release

Just had a scary one, thankfully I have managed to run off the board.

So, on throttle release to “neutral” skate goes to full brakes. If I accelerate all is good it rides totally normal. As soon as I release throttle full brakes again.

It was like that for 5-10 minutes, then it went away, 15 minutes passed shit came back…

Its BioX VESC with Hoyt Puck remote.

So my question is. Could it be remote? Anybody know how a shorted phase wires behave? Is this it?

Forgot to sync metr logs. that could be helpful. Will do that later or tomorrow

Thanks

Iirc you have to program it in mode 3 or it does weird stuff. Maybe you need some deadband adjustment. Someone more familiar with hoyt puck should chime in.

Sounds like either bad/no pwm calibration or you’re running duty cycle mode lol

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Well I have been riding this board for 3+ years daily, zero issues…

In that case you may have a bad pot

Could be, I did resolder pot once it was new for known issues back then… I have a spare puck, will give it a try… Sucks how quickly you lose trust in your skate once shit happens

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This sounds like a bad potentiometer to me. Dropped/crashed this puck lately? It could also just be worn out.

Puck2 is available now from mboards. Hall sensor throttle totally solves these issues.

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Also available from LaCroix

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Good luck ! Fix it !!
I busted my ankle up real bad because of troubles with a remote and it’s been a life-changing situation for me…:grimacing: Can’t go on any long walks anymore, that really sucks. Lucky to still be able to do my job. Just when i started “trusting” the board again, shit happened. Dumped the remote and went the Z-mote route which has regained my trust again. I will never go full out again though… which was always fun. But that last crash showed me “the light” :scream:

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Should be able to disable motor control for testing, and then give the remote a good ravaging while watching the response in the ppm mapping page? If the pots playing up, and should be visible.

I think it’s possible for motors to do weird shit too. Like say there’s a cracked wire going to the PCB for the hall sensor / temp sensor board that sometimes loses contact. Hard to be sure because of epoxy around it, but I think this is what I found happen to a maytech I had once that chucked me off.

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Today, of course, everything is just normal… like nothing happened… tried smashing puck, smashing skate, moving all external wires… all good.

Today is extremely hot here 35c or 95F i think. Yesterday it was way cooler so maybe that has something to do with it if there are some cold solders…

OPened up puck, nothing to see there since i did reinforce it a couple of years ago.

Got the records from metr… not much help but it’s clearly seen here those spikes.

But it seems that both motors act the same, i would assume that if just one is making issues it would show in graphs…

Your solder joints could be perfect but the pot itself could just be worn out

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Yup I am aware of that. Thats why i went out with a spare puck to use that one when the problem appears again so i could confirm that the issue is with the remote… but as thing usually are… there were no problems today at all…

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