Luke (below right) is holding his finished permanent magnet motor. A close up of the projects completed this month is to the left. The top project board was the base for the telegraph sender, the buzzer and the half motor. The bottom is the DC permanent magnet motor. The permanent magnets are powerful arc magnets held with PVC parts, the armature "bearings" are nylon electrical outlet covers, the motor has five laminations made on our CNC milling machine, and the commutator is made of copper tape used by stained glass artists, installed over heat shrink tape. The brushes were also made by the boys from brass shim stock. The boys wound their own coils and did some of the soldering too. The wooden components were cut out of stock by the boys and all the drilling and construction was done by them. It was so neat to see the motor armature start spinning as soon as one of the magnets was moved nearby.
Luke (below right) is holding his finished permanent magnet motor. A close up of the projects completed this month is to the left. The top project board was the base for the telegraph sender, the buzzer and the half motor. The bottom is the DC permanent magnet motor. The permanent magnets are powerful arc magnets held with PVC parts, the armature "bearings" are nylon electrical outlet covers, the motor has five laminations made on our CNC milling machine, and the commutator is made of copper tape used by stained glass artists, installed over heat shrink tape. The brushes were also made by the boys from brass shim stock. The boys wound their own coils and did some of the soldering too. The wooden components were cut out of stock by the boys and all the drilling and construction was done by them. It was so neat to see the motor armature start spinning as soon as one of the magnets was moved nearby.
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