Sunday, October 23, 2011
DiaMag8 Test Platform
Finally got the DiaMag8 Test Platform running, despite some problems that are still giving me some trouble. Namely the power supply, and regulation were plaguing me all week. Then when I finally got to spin it up the epoxy on the rotor failed, and caused the magnets to crash into the stator. Here is the video of the test.
The inside diameter of the rotor magnets and the outside diameter of the rotor body are the same diameter. This means there is only a very thin layer of epoxy holding them together. The centrifugal forces on the magnets cause them to pull away from the rotor body. When I spin the rotor up to 5000 RPM the forces on the magnets were enough to cause the epoxy to fail, and the magnet popped off of the rotor, and hit the stator.