Quote:
Originally Posted by asid61
The reason I said it won't work is because of the wide range. Many ESCs have cell detection and cutoffs at certain points programmed in. Hardware wise it wouldn't be a problem, but the software on the ESC might cause problems.
Power density might also help. The SSS 5940, which I was looking at for a go kart, has exactly the same dimensions as a cim, but it has a peak rating of 10000 watts versus the cim's 1600. I'm not sure if that's just the motor specifically or a property of all brushless motors.
Well, it has a stall current of 180 amps, but a voltage capacity of around 60v.
What is cogging? I've never heard that term before.
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The same ESC's that have low voltage cuttoff that can't be turned off are usually also the ones that don't handle direction change nicely, so none of those would really be an option anyway.
That 10kw number is likely peak electrical, MOST cheaper brushless motors (RC grade stuff) is vastly overrated in power because they spec peak electrical power, and the motor would burn up at that operating point anyway. As you pointed out, this big power comes at higher voltage in most cases. You won't find an RC grade brushless motor at 12V pushing more than 1kw (if that) commonly.
If we were to go to brushless, I think the right move would be a custom controller adapted from industry to be cost effective, and possibly a modified RC brushless motor that is fully sensored. Industrial brushless motors are just too expensive for FRC currently.