grin all-axle hub motor as mid drive?

[Hummina Shadeeba]

inspired by the illegal bike but wanting to make my own version and optimize, and not pay shipping from Russia, I'm wondering what would be the iron losses with the grin motor spun up to 1200 rpm. (it seems the grin simulator doesnt calculate iron losses). It has 23 pole pairs and with 12kv and at 100 volts will be about 27,000 erpm peak.

https://www.makerx-tech.com/products/go-foc-hi200-hi100-75v-200a-esc-based-on-vesc-accepting-order

 

[spinningmagnets]

Look for how thin the laminations are. 0.50mm is common, and the thinner 0.35mm are better, especially at the higher RPMs.

Joby even went so far as to use 0.20mm...

 

[Hummina Shadeeba]

The grin uses .35mm lams.

But the details on how bad the losses would be at 1,200rpm should be findable and could be based of any accurate no-load test at a decent speed. The grin motor simulator doesn’t do it.

https://www.jobyaviation.com/
I imagine they spin really fast.