got a link? couldn’t find any papers about it from the last couple years
It’s a gated resource so idk if I’m allowed to post it. The title is “Design of a Wheel-hub Motor With Air Gap Winding and Simultaneous Utilization of all Magnetic Poles” by Norman Borchardt, Roland Kasper, Wolfgang Heinemann
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I believe they chose this design for space reasons aswell maybe? it leaves a lot of room in the core. Enough for a battery to sit.
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enter crazy discussion about magnetic eddy currents inside cylindrical lithium cells, inside coreless motors
and not be offtopic
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based on their white paper from 2012, where they built a 15inch hub motor for a car, their results are surprisingly good. They ran the prototype at 400V 100A and produced 300Nm of torque. That’s 40kW of peak power. Sure they had to dissipate 2.4kW of heat, but that’s 94% efficiency. The resulting top speed for the wheel would be ~84mph.
A cursory google for other ev motors leads me to a lot of non hub motors, which have an order of magnitude higher rpm, so a comparison is difficult to make directly. But it looks like typical pms motor designs produced either lower torque at the same wattage or similar torque at double the wattage.
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it seems just a standard slotted motor with an airgap thickness that’s large enough to sit another winding. given how long its been and there’s no more examples of this is suspicious. everything written is done by the same developer and i think patent holder Roland Kaper
it seems counter productive given how effective a thin airgap is for making torque in a slotted motor. this relies on increasing that airgap thickness, pulling the highly magnetic steel away from the magnet greatly reducing the torque it could produce, to then make kind of another motor with a weak coil on top…its like making two weak coils where you could have one powerful coil in my mind.
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When in deep review will be ready? 
you will make yt video? Some compare to other prebuild boards?
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Is it uploaded? 
Link?
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I searched the site, didn’t find it.
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Nope
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I’m not following, it’s actually not published yet, or it is and we have to dig for it?
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Latest is a Maxfind review.
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I found it personally hard to like your post. 
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It’s not published yet you can be sure I will post here when it is. I only just got it, too early to make a judgement.
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Sofu has her own review section. Good stuff in there.
https://www.electricskateboardhq.com/category/product-reviews/sofu-reviews/
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The way this read is that you’ve now done the review.
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Sorry about that. I was responding Jasse who asked about if I was doing a YouTube video
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Another thing I’ve been pondering. I know it’s a lot of money, but anyone looking for an analog board with esk8 abilities (like brakes and uphill boost), this is your ticket. It’s as low profile as it gets.
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