| Electronics > Beginners |
| Think I can make it? (electric 9-pole radial engine replica) |
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| Gregg:
Those are very nice drawings; keep up the good work! I know this is just a novelty and basically just needs to turn and start by itself; maybe turn a small propeller for effect and some cooling. For possible inspirational purposes, I don't pretend to be an expert: If you could couple the outer coil cores together with magnetic material it will provide a better circuit for the magnetic flux. Even if the connecting material was looped toward the axis for appearance. |
| metrologist:
Now, that is a good idea to use small machine screws. Would it be better to make the body from steel instead of aluminum? I had considered it would be good to make the body from many layers of steel sheet, as pictured, with plates or endbells on each end. I loathe sheetmetal work |
| Gregg:
Your magnetic field of the sheetmetal as shown would only work for a motor with permanent magnets on the outside. The center ring will conduct the magnetic flux mostly between coils, leaving very little if any to turn the rotor. If you invert the design, it would have an outer ring that would take away the esthetics of a 9 cylinder radial engine. I guess it is back to the drawing board. I thought if the outer ring of magnetic materials was formed along the lines of the radial coils but far enough to not interfere with the coil magnetics too much, it would make your motor look more like an engine. (Motor and engine are often interchanged and therefore seldom used correctly on the internet) |
| metrologist:
I think it will be as such. (I added the wiring) |
| Gregg:
I may be wrong, it certainly wouldn’t be the first time, but I think you should re-think the ways magnetic flux work in a motor vs. a single magnet in free air. I believe that it is the flux between poles that gets the job done via the electromagnets pushing and pulling on the permanent magnetic fields. You certainly have the 3ph concept down. By the way, what are you using for CAD? It looks interesting |
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