I am building a dual Torque Board 6355 with a 12s2p A123 battery that can handle 140a. My intention, though, is to max 50a per VESC = 100a total continuous capable. (maybe 45a x 2 to not stress the VESC’s out too much).
If you search online for copper wire ampacity (given, all of the sources I find are for electrical wiring which are longer runs) suggest 12 awg ampacity is only 20a. I think the gauge wire on the anti-spark switch I have from DIY is 12awg (maybe 10awg, but even then I read that 10 awg is only rated to 30a).
I also have Flipsky’s anti-spark boards and can build my own switch with 8awg wire, but again, I read 8awg is limited to 40-50a. I need double that.
Do I need to run 2 anti-spark switches? 10/12awg doesn’t seem like enough for 100A load.
It’s my understanding the VESC monitoring application reports the battery and motor current (as well as other stuff). but it’s only reporting the load of a single motor. If that’t the case, the below video suggests he peaked at 57a per motor. I’m shooting for the same. Or does the VESC app report the current of both motors combined?
Ok, awesome. I really want to push the ESC’s to a safe max. I’m 235lbs and there are times i’ll be riding in S.F, so I want to get the most out of the board.
I would stick with normal size skate wheels like 83mm to 90mm
And gear 36/15 with 83’s or 40/15 with 90’s
And you will definitely need a dual drive especially if your going up hills.
Dual anti-spark switches, Never thought of doing that. Not sure it will work without causing some side effects or if it will be any advantage over a single switch.
Anti-spark switches have also had a long standing reputation for being unreliable.
I don’t know if there are any available now that have overcome that.
I assume your 40a/50a is a total amount and not per motor too right?
I know the motors I have are rated up to 2500 watt, so I wanted to get as close to that as possible. I figure 1800 watt minimum per motor would be a goal.
Nice, thank you. I just took a look at the mosfets on the Flipsky board and they are IRFS7730PBF boards, vs the IRFS7530TRL7PP on that board. They seem to be rated similar. But the other one looks pretty amazing. Auto-Off seems like a great idea. Thank you!