This is the original 1939 pamphlet that was the inspiration for Dragonfly wind generators.

Since it's issued by the US gov. printing office, there's no copyright, & you can plagiarize anything it contains. But if you don't want to screw around to update 1930's DYI farm technology, please order a copy of the Dragonfly Plans for $10.

Some of Dragonflys' improvements are:
  • 3 blades (2 blades will always vibrate at a given windspeed)
  • Larger swept area, from 5 feet dia. to 9
  • Ball bearings
  • Turntable brushes
  • Weatherproof field switch
  • Higher output
  • Vane tracks wind better, doesn't wander
  • General sturdiness
  • Cable replaces hot wire for remote feathering control
  • You get extra points for the instruction on blade design, pg 13. (lite reading for N. Dak. potato farmers in 1935)
Or you can get all NASCAR with this blade design software for $5 from WindStuffNow.

6v wind plant cover



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