Harold in CR
100 kW
How about bar magnets with a groove OR a lip down each side ?? Mill the rotor with a slot and groove, and slide the magnets in. A thin ring screwed on each end will stop them from slipping out. This way, a little dab of epoxy will help stabilize things, also.
This LINK shows both types if you scroll down and watch for numbers with IN or OUT after the numbers. There are different sizes and pull, along with prices. Bulk is discounted price.
This LINK shows both types if you scroll down and watch for numbers with IN or OUT after the numbers. There are different sizes and pull, along with prices. Bulk is discounted price.