I started with doing research at the library and then the internet, looked into building an axelflux windmill but unfortunitly it is to rich for my blood at the time. So now am in process of making a windmill with a dcpm motor, now deciding with which one to use hoping for some help in this forum. From what I have found I need app. 12 to 15 volts, and a few amps to at a minimum to charge batteries. Also need it to work under low wind conditions. I have a motor argord on now that pts out 18.5 amps but need more rpm to get the 12 + volts, am thinking of gearing it up with maybe bicycle gears and chain, and increasing the size of the blades to get it to rotate better under lower wind speeds. Oh well tomorrow is another day.