The Original Hard Drive Motor

Back Motors

This fascinating motor was based upon a rotor scavenged from an old computer hard drive. Hence as one would expect, it is almost entirely frictionless, and also very well calibrated. Between the dual hard drive platters reside 4 1 2 12.7mm square faced NIB magnets, fixed in place with high strength epoxy glue, at 90 degrees apart. The diameter of the hard drive platters disks is 130mm. The stator cores are made from permalloy these were found to produce better results than relay cores . The...