We used them in the army for our service tck. The gen windings were strong enuf, we could run a cracker box stik weldr off it, but yea, like reuben, gotta high idle it for proper rpm/current out put. Reuben, as i was reading ur post n u were saying havin to run high rpms, my gears started turnin n by the time u said a low to high rpm induction box, i was thinkn bout a big pulley/sprocket at the pto shaft and a real small pulley/sprocket to the gen input shaft. If a person could rig a 3:1 sprocket set up up, it would take 700rmp idel at the pto shaft n increase it to 2100rpm at the gen input shaft. A bearing block, 2 sprockets n a chain, a short pto shaft n u would have a low rpm high output pto generator
like I said about you before...you are a smart feller...