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3D printed toroidally wound axial flux permanent magnet air core motor.
3DTAFPM?
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does it work as a generator ? efficiency ? (power is around 300W from what i saw ?)
what is the price to build one ?
how hard would it be to make one that reuse magnet from old Hard drive ?
Since this motor uses permanent magnets, you could use it for generation instead. However, this project is focused on it as a motor and wouldn't be optimized for power generation. That being said, if you wanted to do regenerative breaking for example, this is a bldc motor in an axial format.
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I am currently working on my 8th version of a cheap and accessible motor utilizing 3D printing. It features an out runner style brushless design with a single stator and two rotors. The stator has a serpentine coil pattern, and there are no cogging or core losses due to the absence of a ferrous core. The rotors have halbach arrays of N52/N50 magnets attached to laser cut iron backings, which are epoxied into the 3D printed halves. For more details, you can visit my project on the <a href="https://howwmuch.net/how-much-does-travel-cna-make/">CNA website</a>.