Do-It-Yourself Windmills
- 1). Obtain a motor, preferably a permanent magnet DC motor. Look for high DC voltage, low RPM and high current when selecting a motor. A motor that produces around 325 RPM at 30 Volts should work.
- 2). Create your blades by quartering a length of PVC or ABS pipe and shaping the quarters accordingly. The pipe should be between 4 and 6 inches across and 19 and 24 inches long.
- 3). Bolt your blades to a hub and attach that to the motor.
- 4). Mount the motor to a standard 2-by-4. Use PVC pipe to craft a protective covering for the motor and mount that as well.
- 5). Cut out an 8-by-14-inch piece of aluminum for a tail. Adhere it to the 2-by-4. The tail should be on the opposite end from the motor but adhered to the same side of the wood.
- 6). Make the top portion of the turbine's tower by adhering a 1-inch iron floor flange and a 10-inch-long iron pipe nipple to the 2-by-4 about 7½ inches from the generator.
- 7). Cut out a plywood disk with a 2-foot diameter for the tower's base. Use 1-inch pipe fittings, a 1¼-inch tee and a 12-inch nipple to create a hinge attached to the base. Drill holes in the base for steel stakes that will hold it in the ground.
- 8). Attach a 10-foot-long piece of 1¼-inch conduit to the base to create the tower. Secure the tower to the ground with steel cables and stakes.
- 9). Thread an extension cord through the electrical conduit to connect the head of the turbine with the controller and battery.
- 10
Wire the battery and controller to each other on the ground. It's a good idea to place all electronic equipment on a piece of plywood and then place that atop a table or stand situated beneath a protective shelter. Thread the extension cord through the the tee at the base of windmill's tower and connect that to the controller. - 11
Connect the battery to your electronic devices for use.
Source...