HOME > WEIGHT & BALANCE

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"


Weight Arm Moment
Aircraft empty 766.5 16.52 12,659.25
Oil (included) 0.0 -29.00 0.00
Fuel: 12 gallons 72.0 -18.00 (1,296.00)
Front seat 9.00
Back seat 36.00
Baggage (max 20 lb) 49.00


Sources:
1. Weight & balance sheet in 06H baggage compartment
2. 06H records at Dunn Aviation, Hampton NH