Disregard MBoards, and leave that setting alone. They don’t know what they’re talking about.
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Well i thought I was done so I tested the motors with the remote but one of them kept making a crackling sound when id press full throttle. I thought maybe because I had to invert both motors. My phase wires were combined into one connector per set of three wires and the connectors only work one way so I couldn’t switch them around either to avoid inverting them.
I got fed up and reinstalled the unity firmware. Now my motors run smooth without the crackling. My motors are inverted in this app too.
Any ideas why that happened?
Firmware issues
It’s fine once you take it off the bench, set the wheels on the ground, and stand on it.
Since my last post i burned out a motor on New Year’s Eve hauling butt around this lake but anyways I ended up replacing both motors. I figured the motor was failing and thats why it was stalling but its still doing it. Ive since reinstalled vesctool and ridden several times trying to make adjustments after each ride including traction control but nope. Any ideas?
I also gave the wrong specs. I have a 12s7p and the torqueboard 6380 190kv 95a motors.
I assume to get max power from my motors i should set my motor max to 95a and 87.5a for battery max since I have a 7p.
Now I’m thinking the motor is stalling when im stopped at an incline and I try to accelerate. Maybe I’m too heavy for the motors and with the incline its too much for them to handle so they stall/slip for a second. Is that possible? Is there a setting in vesctool to help with this?
I weight 190lbs and most of my weight is generally in the back. My experience comes from snowboarding so I just naturally lean back like im trying to float over some powder.
Should be trying to keep weight over your front foot while riding. Shift weight to the back when braking. Otherwise keeping your weight over the back while riding is a recipe for speed wobbles
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Ive been riding this way for years. No wobbles.
Me too. I’ll also add that I’m not very heavy and there are situations, such as on loose terrain, where if I don’t lean back the tires won’t get enough traction.
I tried lowering the default deadband of 15% for the throttle in vesctool down to 5%. I didn’t have any cutouts on my test run so hoping that was it. If not ill report back but I just figured I’d add this for anyone else that may be searching for a similar fix.
I use the Maytech remote similar to the Evolve R2 so lowering the deadband hasn’t appeared to cause any adverse effects with this style remote.
Are using sensors or HFI?
Do you mean the hall sensors? Yes I have these sensor wires from my motors plugged into my xenith. I’m not familar with HFI.
Are you using them? Are they turned on in software?
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I believe so but I haven’t touched any of the settings in that section of vesctool
I smell a bad connection somewhere… have you check your solder joints from the vesc?
Havn’t studied all the replies or progress in here but from your initial post it sounds like bad stuff happens when you draw current. A big voltagedrop over a bad joint could cause all kinds of issues
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I rode hard on my last ride after lowering the deadband and I didn’t have any cutouts. If I had any bad connections wouldn’t I have issues every time I ride? I’m going to keep riding and if it happens again then maybe something broke. Otherwise, I think the deadband was set too high.
I feel like it’s not deadband.
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I got the idea to try it from this post that was never answered;
https://vesc-project.com/node/3698
I’ll report back.
Probably disregard but is it voltage sag? Bms setting? To many amps from battery. Ive never seen battery amps higher than motor amps? Whatcha finding?
I don’t have access now but on my last ride I had the motor max set at 85a each motor and 87.5a for battery max. I based the 87.5a on the recommendation in this thread to avoid sag. I mistakenly said I had a 12s5p but I actually have a 12s7p Molicel 21700 P42A 4200mAh 45A Battery pack.
“For a 5p pack at 25A per cell, you’re looking at 125A total, 62.5A per side.” So for a 7p I calculated that to be 87.5a per side.
I used the other suggested vesctool settings too but I haven’t made any changes to the bms settings since I set it up a year and a half ago. This problem has been more recent which is why I’m also afraid my xenith could be failing except this last ride went perfectly so I don’t know.
I’ve since reduced the motor max to 80A and plan to try it tonight. My motors were getting a little too hot at 85a even though they are rated for 95a. I tried 95a too but the motors got way too hot.
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Yeah, idk. Im not saying its right or wrong, but 40amps battery per side is likely sufficient, possibly 50. Just my opinion. Im honestly suprised no one mentioned this.
I had a crazy power hungry set up and my battery amps were to high, when id throttle on hills the esc would behave funny as if reciving too many volts or none… ultimately in my case the battery was sagging under voltage cut off. Have you check voltage cut off? 7p is definetly more than enough power.
What you could do is real time stream on the workbench with max throttle set to current and observe any fualts.