Brinda George - Simple wind generator ?? 3 windmill fans (with flexible sails ) mounted / linked with a bicycle chain = SMALL SERIES works like a LARGE + a car alternator with a cluster-gear (10-speed bicycle) mounted instead of the pulley - - The "fans" are mounted rigid (fewer moving parts) - the alternator has a built-in regulater - POWERS a battery bank - an inverter converts the 12v. to 110 v. <like a motorhome] ((scaled-down version of Dutch windmills)) The cluster gears make the difference in light to heavy winds = a solenoid shifts gears.