Modifying Induction Motor to Synchronous Operation

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Original poster: "Danny Stone by way of Terry Fritz <twftesla-at-qwest-dot-net>" <dansto-at-pacbell-dot-net>

Pardon my ignorance, but I'm new to the list, and I've had difficulty 
accessing the archives (thanks to Code Red - argh!)

Can someone point me in the right direction as to where I can get 
details/instructions/theory on how to modify an induction motor for 
synchronous operation? I infer that it involves grinding flats (into the 
rotor?)

Thanks in advance,
Danny Stone
Newbie Coiler in Sacramento, CA