I'm starting this thread to help OrionLightShip replicate the "Oscillating Reed Switch Pulse Motor". I'll be available to anyone else who cares to follow along.
Firstly, let me stress that high speed magnet spinning is potentially lethal if proper safety precautions are not followed. I advise spinning inside a PVC coupling; Much thicker material then the pipe itself. I used the 2 1/2 inch diameter coupling. This thick walled material is ample protection against shattering, and should be the first item on your shopping list.
I used one CD on the top, but gluing two or three together might make more sense. The CD's need a hole close enough to the diameter of the thread spool pulse coil to fit snugly, but loose enough to push and pull the coil up and down a few millimeters each way for positioning. The CD's need to be free to slide around over the top of the coupling a little also.The Reed switch always remains fixed in position on the coil with strong glue. Naturallly, the open bottem of the PVC coupling should be facing a strong table top. This creates a complete safety enclosure. A tiny window can be cut in the side of the PVC coupling to allow for "Laser Taching" the rotor speed. We could drill a hole there to plug the "Laser Tach Lens" directly into, and build a support to hold the meter up off to the side. No shatter framents to get through that way either!
Firstly, let me stress that high speed magnet spinning is potentially lethal if proper safety precautions are not followed. I advise spinning inside a PVC coupling; Much thicker material then the pipe itself. I used the 2 1/2 inch diameter coupling. This thick walled material is ample protection against shattering, and should be the first item on your shopping list.
I used one CD on the top, but gluing two or three together might make more sense. The CD's need a hole close enough to the diameter of the thread spool pulse coil to fit snugly, but loose enough to push and pull the coil up and down a few millimeters each way for positioning. The CD's need to be free to slide around over the top of the coupling a little also.The Reed switch always remains fixed in position on the coil with strong glue. Naturallly, the open bottem of the PVC coupling should be facing a strong table top. This creates a complete safety enclosure. A tiny window can be cut in the side of the PVC coupling to allow for "Laser Taching" the rotor speed. We could drill a hole there to plug the "Laser Tach Lens" directly into, and build a support to hold the meter up off to the side. No shatter framents to get through that way either!
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