And checkout the new software package called DC Motor Analyzer for Windmill Applications This software is absolutely necessary if you are designing a homemade windmill. You get the windmill book, the welding book, homemade amp meter book, I'm always writing new books or programs, so check back from time to time. Also shows how to make an amp / watt Ear Wax Removal System Limited Time Only --- Special Deal --- Limited Time Only Since I created this program, I can't stop analyzing motors I find on Ebay. Make a 1,000 watt wind turbine meter (500 amp 6,000 watt @ 12v) I love to take what some would call "junk" and find a new use for it. Poor Man's Guides - homemade windmills and more