Micro CoGen.

Thank's Steveu.

Hi, this is my first post to the forum. I have enjoyed reading about the projects forum members are doing.  I  have read Mobile Bob's White Paper on battery charging with an automotive alternator and I am collecting parts for one.   I have an 160 AMP Leece-Neville 110-555PHO alternator and have a question about a pulley.  The alternator shaft has a keyway with a woodruff key. I am wondering if a pulley with out a keyway can take the torque with out slipping on the shaft under load? Is it common to use a pulley with out a keyway on this alternator?