So, just to clear the air of all confusing details, the equation is:


(WL)(DL) + (WR)(DR) + (W3)(D3)= CG
(WL) + (WR) + (W3)

if (WL)= left main gear weight,
(WR)=right main gear weight
(W3)=nose or tail wheel weight
(DL)=reference point to left main distance
(DR)=reference point to right main distance
(D3)=reference point to nose or tail distance


Equation in Action. Garage door isn't the best vertical reference point in the world, but the best I had at the time.

Note the weight-zeroed blocks on the scales to get the thrust line level.

I wish I had that idea about using one scale and two blocks! Would saved me some money to buy balsa and glue. Gotta make sure the plane doesn't move while you're switching things around, though.



mt