Why use a permanent magnet DC motor as a generator?
DC permanent magnet motors are readily available on surplus web sites, thrift stores, garage sales, and old cars. Here is a Leeson 14 AMP DC Motor which is very much suited to be a generator. Click here to see more information about this DC motor/ generator. The interesting thing about using these motors is that most of them create DC power that can easily be fed into an AC inverter so you can power up your television or computer with it.