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Date:  12-11-2006
Number of Hours:  3.00
Manual Reference:  sec 15
Brief Description:  Weight and Balance

Date 12-11-06 Sec 14
With all the major parts and the graphics on the airplane I had to perform a weight and balance before the FAA airworthiness inspection. I barrowed the scales from Weaver Aircraft and an engine hoist from Dave McClellan. I was lucky to have a worktable the correct height to put under the tail wheel for the fuselage to be in level in flight attitude. After zeroing out the scales and adjusting their height and level we lower the aircraft onto the scales under the mains and place the tail wheel on its scale.
#933 total empty weight.
That’s a great number. On line the average weight was 1007lbs so I was able to keep the weight down and the CG came well within factory specs.

WEIGHT & BALANCE DATA

Make: Van’s Aircraft
Model: RV4 Serial # 4354 Registration # N359DM

Datum= 60 inches forward of wing leading edge. (L.E.)
Design C.G. Range = 15% to 29% of wing chord, or 8.7” to 16.8 inches from L.E., or 68.7 to 77.4 inches aft of Datum.
Wing L.E. = 60”aft of datum.
Main wheel, right = 60”aft of datum.
Main wheel, left = 60.3”aft of datum.
Tail Wheel = 237.5”aft of datum.


Aircraft weighed empty in level flight attitude.

Weight (lbs) Arm (ins) Moment (lbs. in)
Right Wheel 441 60 26460
Left Wheel 436 60.3 26290.8
Tail Wheel 56 237.5 13300
Total: 933 66050.8

CG=66050.8 / 933= Empty moment of aircraft 70.8” aft of datum

Weight and Balance Work Sheet

Datum= 60 inches forward of wing leading edge. (L.E.)
Design C.G. Range = 15% to 29% of wing chord, or 8.7” to 17.4 inches from L.E., or 68.7 to 77.4 inches aft of Datum.
Wing L.E. = 60” aft of datum.
Oil = 40” aft of datum.
Fuel = 70” aft of datum.
Pilot = 82.5” aft of datum.
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