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Piper Cub weight & balance calculation

If you should take your check flight in a Piper Cub, you may get thrown a curve when the check pilot asks for a weight & balance calculation. Not many FBOs make this information available. But here's the table I worked out for N7006H, a 1946 J-3 rebuilt as an L-4 lookalike:

Max weight ..... 1,200.0 lb
Empty weight .... 766.5 lb w/ 4 quarts oil
Useful weight ... 453.5 lb (with a full tank of gas, that leaves 381.5 lb for the pilot, crew, and their gear)

Datum: leading edge of wing

Allowable c.g. range: 10.6" to 22.7"

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