Here are two DC brushless motors 3d printed for RC cars applications. They reach 36000 RPM and 42700 RMP.
Here is the first version which exploded due high RPM and centripetal forces of magnetic mass:
Here is improved version that reaches even higher RPM:
You can learn more at:
http://sgabolab.altervista.org/thunder-brushless.html
Here is the first version which exploded due high RPM and centripetal forces of magnetic mass:
Here is improved version that reaches even higher RPM:
You can learn more at:
http://sgabolab.altervista.org/thunder-brushless.html