Still wondering if there would be a significant advantage in using grain-oriented steel (up to 30% higher flux density but usually has a lower silicon content than non-oriented)?
I don't either Marko.markobetti wrote:i dont see a point why not to make laminations : use 0.35mm or 0.2 mm soft silicone steel No. 250#.
winding wire perhaps : type(at least): Enameled wire, No. 2UEW, grade: F, internal resistance: 0.0087Ω
- Over 4Nm continuous torque per kg of motor weight.
- Less than 3kg in weight.
- No energy input other than that to the motor itself.
- Capable of practical use on an electric bike.
Miles wrote:They could be bonded in but, I would have thought that the collective wedging action outwards, into the recess, would take a lot of torque to overcome?
Miles wrote:What info would you need to do a FEMM analysis, Eric?
I could do a linearised section around the mid radius of the stator?
It's an interesting design.. and avoids some of the structural problems of the axial flux topology.flathill wrote:If you angled the magnets/laminations you would have one of these:
http://www.novatorque.com/technology/co ... metry.html
I think conical may have an advantage here, also allows them to use low cost ceramic mags, but now imagine this this design with neo or smco...or inverted
Miles wrote:Shall I post it as a 2D DXF file?
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