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Printed Brushless 36900rpm - Warning explosion problem

Hi, this is a prototype of brushless motor made from broken old dc brushed motor.
I made it from brushed motor that worked at 15000rpm in original.
This prototype require a metal shield on rotor to prevent explosion or increase the wall of rotor from 1mm to 3-4mm
See on video the build and the first test and what happen .. I hope you like it ;)

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