I hadn't come across those before, thanks. Thinking about it, it would probably be easiest if I had the magnets on the rotor and the coils on the stator, might be possible to rebuild these like this.
Still open to ideas for ready made alternatives! I have just remembered that bicycle "dynamos" are actually alternators, they might be a possibility.
(Posted simultaneously with Alan's reply! Thanks Alan.)
Andy Millar CEng MIET CMgr MCMIhttp://www.linkedin.com/in/millarandy
"The aim of argument, or of discussion, should not be victory, but progress." Joseph Joubert
11 October 2010 at
09:13 AM by