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Air Motors Powered By Compressed Air Piston
Piston air motors operate a little like old steam engines. Pressurized air powers the pistons and a crankshaft, says Floyd Summy, who builds Air Miser motors in his Stotts City, Mo., shop that run off compressed air from diesel or wind-powered air compressors.
  Summy sells piston air motors mostly to Amish and Mennonites who don't use electricity. Common uses are to power shop ventilation and spray booth fans as well as washing machines.
  Summy says his Air Miser is highly efficient.
  "Air only comes in when the piston is on top dead center, and the valve closes as soon as the piston is going down," he says, explaining that helps prevent them from freezing up from moisture.
  The motors also tolerate low lubrication because Summy uses sealed bearings, a stainless steel cylinder and a Delrin piston. He recommends using air-tool oil on the piston's O-ring. No special tools are needed to replace the seals, which are readily available.
  "You can run them in either direction," Summy says of his Air Misers. "They have a handstart flywheel. Turn the air on, and give the wheel a little push."
  Summy's most popular Air Miser is Model 22A that produces 1/2 hp. It sells for $390 (plus shipping) or $420 (plus shipping) for a kit with belts, pulleys and a bracket to mount on a Maytag wringer washing machine. A smaller 1/4 hp model (21A) sells for $290. He also offers packages with pedestal fans.
  People interested in more information, should leave a message, Summy says, and he'll return their call.
  Contact: FARM SHOW Followup, Spring River Machine, 3490 L.C. 2110, Stotts City, Mo. 65756 (ph 417 285-3164).

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2011 - Volume #35, Issue #4