Well I'm no where near 500 to 1000 volts. I don't think a person could even rewind the armature and get that much. I have tried a drill but it didn't really help much other than keeping my arm from getting tired. I thought the magnets may have lost some charge so I stuck a large NEO magnet on the side and it gave me a few more milla-amps but not the major change I was looking for. Was loads of fun getting the NEO magnet off : )

I've got two 5 bar magnetos now and get pretty much the same output from both. There must be some trick to it or I've got the wrong type of magnetos.