recumpence wrote:This motor has been tested to 30,000 RPM without failure.
For this particular wind, that would take over 600v to get there (over because drag losses at those RPM's are not going to make KV stay linear). Not that there is anything wrong with that, as it would actually make an IGBT module a logical choice, and many are available that fit the bill.
It's kinda a bummer to see 50kv on a test motor though. For a given voltage limit fixed by controller limits, it won't offer power advantages (other than what it gets from cooling) over a 100kv version of the 3220, and even a 250kv version of a 3210 should be capable of similar power output.
Because even if it's got the continuous torque rating of 3x 3220 motors, it's only going to be working with 12ft-lbs, and at 100v it won't have a snowball's chance at 14kw output (which would require 39ft-lbs at peak power of 2500rpms!)
Wind it for 250-300kv, and you'll get get 14kw continuous output. Unless you've got a secret high-voltage controller waiting for it, with a 50kv wind, it's kinda like if you got a 5306 hubmotor and hooked it up to 24v. The motor is capable of super high power, but unless you've got a way to feed it the voltage it needs to make it, it's not going to get it's opportunity to shine.
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