I've done a LOT of searching on different machines in the past month or so. I know the Axial is easer to build and the latest one Chris Olson built is REALLY impressive!!! But I've always liked the rotary type. I'd like to build a PMA like the pic. I think it's one of Flux's creations.
My plan is to build a 24v machine, partly off grid system. I'm looking to buy a 1,000 watt inverter
http://www.solar-electric.com/exxp24vol11w.html Depending on how much power I can generate I will buy more inverters. A 12' rotor would be around the size I'd like to build or buy
http://royalwindandsolar.com/ It might be a little hard to get clean air hear in the Pittsburgh are, because of the hills and trees, their not very wind mill friendly, but what ya gonna do... Just over the trees is all I want to do, about 40-50' from the ground. Do they make telephone poles for these things...
With the axial type I seen a 3:4 ratio is standard. Or more commonly 9 coils to 12 magnets.
Do the radials have the same ratio?
I think Flux used a 10" core, a 12" drum with 40 voice coil mags and I can't find the wire size and turns (it's in my notes somewhere) but two in hand for his. I can't find any other info on it, and believe me , I've tried looking. So many Flux posts so little time.
I don't need to recreate the wheel, and something like Flux's looks like a good build for me.
Bigger is better in my book, (altho the magnet$$$$ might hurt me) maybe a 12" X 3"core...
If someone could give me a place to start:
1. Wire size. 24v
2. Number of turns.
3. Number of coils. I'd like to play around with "Y" and Delta wiring.
4. Number of magnets. 24 ? 15" drum? I found these; 3X1.5X.75 N42
http://www.magnet4less.com/product_info.php?cPath=8_39&products_id=765. Do I stay within the 3:4 ratio.
6. A gearbox might be an option but I'd rather be direct.
I might be a newbie on the board but I've been machining and welding for over 25 years (machinist by trade). I have a 3 phase set up (from single phase 220) powering my mill and lathes. A Millermatic 250 wire feed welder and flame wrench. I can build what ever is necessary. How do you like me now?
Still, lots to learn. I have more questions than answers.
Tim Taylor has the right idea... More Power!
Can anyone help a "newbie"?
Your help is much appreciated!
Blue