Alternators

45kwh dc motor diy
https://www.youtube.com/watch?v=2LNfDI3QUpQ

http://www.masinaelectrica.com/45kw-bushless-motor-design/

reuk

 * http://www.reuk.co.uk/DIY-2kW-Wind-Turbine.htm The generator was designed with a 24 Volt three phase stator (3 coils each phase) and two rotors with twelve 46x36x12mm rectangular shaped NdFeB (Neodymium) magnets each. The hub and rotor assembly was built out of scrap 1995 BMW front strut with a pair of brake discs. See http://elektritsaabtasuta.blogspot.com/2010_03_14_archive.html
 * http://ftcinnovations.com/
 * https://www.youtube.com/watch?v=HkgOYbrh3dU
 * http://www.williamswindtech.com/,  https://www.youtube.com/watch?v=a1ip2R4Tre8

http://www.otherpower.com/otherpower_wind_alternators.html

https://www.youtube.com/watch?v=3NaPbkaBU3A

youtube
https://www.youtube.com/watch?v=NKDYeyu0R30

https://www.youtube.com/watch?v=bHzt74CE0fg 1.7mil views The resin used is epoxy, which can be cost effectively obtained for R30,000 per 200litre drum. See Lathe. It would probably be cheaper to build a DIY commercial metal caged alternator as epoxy at R150/kg imported is expensive. Bought in 5liter volumes around R500 and it becomes unfeasible. A planetary gearbox on windturbine output shaft allows for a much smaller alternator, saving on expensive neodium magnets.

https://www.youtube.com/watch?v=Z4uQwH-C-x0 modding a car alternator. prevent corrosion with varnish. clear marine or green varnish, ask for alternator formula.

https://www.youtube.com/watch?v=ZRnhFvu9PXo induction motor diy

https://www.youtube.com/watch?v=5D_lJka2wDg very large stator design 1m diameter romania diy. The back emf is large, thus it might not need a planetary gearbox on output shaft of windturbine.

otherpower
http://otherpower.com/stator.html http://www.fieldlines.com/index.php?topic=139897.0