My original plan was to build the 12' Gen. in H. Piggots book since it was the largest then I figured it had to be the best. Now I see in a few postings it has been determined the stator may be a little light duty for this mill as I understand it. I already have most of the metal cut for the PMG mount etc. & it won't be long until I have to spend money on magnets & wire so I'm going to have to finalize what I'm going to try to do soon.
The remedy proposed for the light stator was to use larger, stronger magnets which would enable a thicker stator & fewer windings with larger wire for more current capability. Since I'm straying from the original design I'm sure I'll have to wind a test coil & see what I've got but if you folks would be so kind as to look over what I've got planned & tell me if I'm wasting my time & money before I do so, I'll be appreciative.
The original design called for 3 phases, 4 coils per phase, 25 turns, 2 in hand of 13 Ga. for 12v. I want a 24v mill so was planning for 50 turns of 16 Ga. It also called for 2-14 I/2" magnet rotors with 1" by 2" by 1/2" n35 magnets, 16 mags. per rotor.
I'm proposing to use a 5/8" thick stator & rotors with 1 by 2 by 3/4" n50's. I also plan to make the hole in the center of the coil 3/4" at the bottom & 1&1/4" at the top. This should give a little more room where the coils would touch. I'm thinking I can get approx. 37 turns of 14 Ga. wire 2 in hand in the same area & with the stronger magnets, still get enough voltage out of it to get to 24v. I've also considered trying 18Ga. 4 in hand for better (compaction?) Not sure that's the word I'm looking for but hopefully you know what I mean. Anyhow, shoot holes in my design if you would be so kind.
thanks
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