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Posted for Hickham <hickham@hargray.com>:
Craig,
Attached you will find photographs of the flap speed controller using the Grainger two way valve. The valve is attached to the cylinder with two nipples and an elbow. It comes out of the valve with a 90 degree fitting for the hose attachment. Notice the clamp around the two hoses. This stabilizers the valve mechanism and lessens any fatigue to the brass fittings. A slot is made in the top of the valve to accommodate a small screwdriver. The seat has a hole just over this valve so that a thin screwdriver can reach the valve stem. This is how the adjustment is made. A screw fitting is placed in the hole in the seat to maintain cabin pressure. Make sure that the valve is connected to the cylinder with the adjustable part in line with the flap up movement. Any desired up speed can be obtained without any effect on the down speed.
You may be interested in the flap indicator set-up. A right angle support is bolted to the flap arm, a wire runs from the top of this arm to the flap indicator. The position of this right angle arm should allow the flap indicator to fully travel with movement of the flaps.
Good luck with your project. Hope to join you in the air soon.
Jack Hickham
Lancair IVP
N10UU-100%
Hilton Head Island, SC
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