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Date:  12-30-2010
Number of Hours:  3.00
Manual Reference:  
Brief Description:  Weight and Balance 1

I asked Brent, myTech Counselor to bring the local Chapter's scales, and we weighed the aircraft. Before we did that, I drained out the useable fuel in all four tanks. I already had full oil, namely 12 quarts, on board. We leveled the aircraft and after zeroing the scales, obtained the weights on all three and measured the arms of the main and tail gear relative to the datum, which is the leading edge of the wings. The overall weight with front and rear seats installed is 1729 lbs, with an arm of 11.32 inches. This is a bit heavy, considering a limited interior. On the other hand, the aircraft has the veritable kitchen sink on board, for example, an O-540 with a Hartzell three-bladed prop, cowl flaps, skylights, double batteries, Rosen sun visors, heated pitot and AOA, considerable avionics including infrared, Zaon XFR PCAS, dual EFIS, XM weather, 2 axis autopilot, redundant steam guages, aux tanks, plumbing for fuselage tank, auxiliary fuel pump, heater/defroster, fire extinguisher, ac-dc inverter, and 8.5 x 6 tires and an Iron Design tundra tail wheel.

The auxiliary fuel tank weighs 24.2 lbs, and its arm is 69.5 inches forward or 79.5 inches if located aft. I also weighed my rear seat, and calculated its center-of-gravity location: 22.7 lbs, 9.0 inches in front of the rear attach point, or arm 58.5 inches, for use in case I choose to fly around without it.

The aft tie down ring is located at arm 92 inches.
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Weighing the aircraft.

Weighing the aircraft.

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Fuselage Stations.

Fuselage Stations.

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