BushCADDY LSA Pilot Operating Handbook Rev.03 5 March, 2008
Page 14 of 52
CENTER OF GRAVITY
Example
Calculation of Center of Gravity
The datum line is situated at the leading edge of the wing
Horizontal distance “D” between the main wheel balance point and the datum line------6.5in.
Horizontal distance “L” between the main wheel balance point and the tail wheel balance point ----174 INS.
EMPTY WEIGHT
Scale weight Lbs. Tare weight Net weight
Right
280 0 280
Left 280 0 280
Tail 67 27 40
TOTAL WEIGHT 600
RECORD THE WEIGHT ON EACH WHEEL, DEDUCT THE TARE FROM EACH
READING.
FORMULA FOR CALCULATING THE CENTER OF GRAVITY POINT
C.G = D+ Rx L = 6in. + 40 x 174 = 11.6 IN + 6.5 IN. = 18.1 in.
W 600
WARNING! Chock Main wheels to prevent aircraft movement during weighing
procedure.
C of G
To be calculated
Datum line (leading edge of wing)
Weight 280 lbs (left and right) Rear scale 67 lb
L m ea su re d
Su p p o rt 2 7 lb s.
Weighing point
tail wheel
Weighing point m ain wheels
D measured
(Tare)
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