THE SALTER RD-7000 WIND TURBINE

(Page 2 of 2)

March/April 1975
 
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"The real secret of this design," says Salter, "is its simplicity. The rotors run downwind of the machine's pivot point. That eliminates the need for a tail vane and cuts thirty to forty bucks off the cost of the windplant.

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Our rim drive turns the generator 1,250 to 1,375 rpm in a 25 mph wind without costly gears. And the RD-7000's damping device which is no more complicated than a door closer just kind of lets the whole rig lay over further and further whenever the speed of the wind increases to a more and more dangerous level. This decreases the area of the rotors exposed to the gale in a very straight forward and inexpensive manner. It's ideas like these that should allow us to install our wind turbine-less batteries-at a price of about $450 per kilowatt."

Patents are pending on the RD-7000 and the prototype unit is still being tested. Which is to say that the Salter windplant probably won't be on the market for at least another two years. But that doesn't stop it from being a very interesting concept right now!.

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