W&B Method
FYI, here is how I weighed my aircraft. This actually the second time I did it, the first was done by jacking the aircraft up on wing jacks with tail ballast... kind of precarious and difficult.
First, I made three identical weighing ramps:
Each ramp has a removable section:
Into which a pair of My Weigh digital freight scales can be fit:
A platform is placed on the scales, the aircraft level is checked, and the measurement made:
Rinse, lather, repeat for each wheel.
Note that the platforms are designed so that the airplane can be rolled back on the level part to change the scales around. It took about 2 hours to do the complete measurement, including all of the levelling (by adjusting tire pressures).
Vern Little,
RV-9A, final inspection complete.