With Brushless Motors, the devil is in the details! Start up, timing, switching, loading, transients, noise (both electrical=20 & audible) are all problems to address. Handling a hundred or so amps is=20 OK, but a brush less the size of an alternator would likely be in the=20 4Kw-5hp range with Currents & voltages that are outside my normal=20 bounds. I would guess that the form factor would dictate an In Runner=20 which is inclined to be high revving, short power band... OTH, the more I learn. the more I find that I don't know... I wonder=20 what electric vehicles are currently using... off to Google... On 6/8/2012 11:20 AM, M.L. wrote: > On Fri, Jun 8, 2012 at 10:57 AM, John Ferrell w= rote: >> I am a fan of Youtube. There are many really good videos there from >> repairing appliances to academic Lectures. >> However, there seems to be an increasing tendency for pranksters to >> present convincing demonstrations of things that just are not so. >> >> In the case of brushless motors I have just enough experience(model >> airplanes) and information (internet) to want to believe posts like this >> without adequate evidence. If you do any lab work to prove or disprove >> the use of an alternator in this manner you would do us all a favor in >> sharing it! >> > John, > It's not magic! As you probably know, the difference between a motor > and an alternator like this is a "simple" issue of commutation. You > certainly need some electronics to control the phases. Otherwise it > should work. > --=20 John Ferrell W8CCW =93During times of universal deceit, Telling the TRUTH becomes a revolutionary act=94 George Orwell --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .