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Piper J-3 Cub G-AFFJ with the Everell single-blade propeller
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Piper J-3 Cub G-AFFJ with the Everell single-blade propeller
Piper J-3 Cub G-AFFJ (msn 1165), seen with the Everell patented single-blade automatic variable- pitch propeller. The single propeller blade was balanced by a counterweight and was free to pivot, over a small angle, along the axis of the blade. Centrifugal and aerodynamic pitch moments automatically set the pitch of the propeller. G-AFFJ was first registered on 6 April 1938 and sold in Germany in January 1956. Date: circa 1939
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Media ID 21130597
© The Peter Butt Aviation Collection / Mary Evans
1165 1938 1956 Aerodynamic Angle Automatic Automatically Axis Balanced Blade Centrifugal Free Moments Patented Piper Pitch Pivot Propeller Registered Sold Variable Counterweight January
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