Hi Everyone, In my never-ending quest to have far too many things to do, I'm contemplating building and electric motorcycle.. I know very little about motor control and the pros and cons of various types of motors so I'm looking for a good book on the various types of motors and controlling them. It seems that most people out there building electric vehicles are using DC permanent magnet motors and using some form of PWM to control them.. However I've read that AC motors can be more efficient. Can anyone recommend a good book or two on the subject? Anyone have any thoughts or experiences that they would like to share? Thanks for your help. Ash. --- Ashley Roll Digital Nemesis Pty Ltd www.digitalnemesis.com Mobile: +61 (0)417 705 718 -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body