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Koenders Windmill is a direct drive energy transfer system that has no gears andfew moving parts. The operation is efficient and easy to maintain. If you do haveto replace a part, it won't be an all day job. The simplicity of the design is an added feature.

• Wind strikes the blades, turning a crankshaft.
  
  
• Offset, grease sealed ball bearings transfer power from the crankshaft to a connecting rod.
  
  
• The connecting rod, attached to a diaphragm at the bottom end, acts like a piston to draw air into the system on the down stroke, and force it out into the hose on the upstroke. The 1/2" stroke produces 1.5 cubic feet of air per minute at 5 lbs. psi with a maximum pressure of 35 psi.
  
  
• The pressurized air passes through the hose and is released in the bottom of the dugout. A series of 3 check valves ensure a one way airflow through the system, and prevent water from returning back The first valve on the diaphragm, allows air to enter the system. A second, on the top of the compressor, allows air to pass out of the system. A third, in the dugout, releases air into the water.