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Old 11-16-2020, 06:10 AM
Tony Hallo
Join Date: Jan 2003
Location: Springdale, PA
Posts: 1,641
Received 3 Likes on 3 Posts

If your plane has a wing tube, 1/8" plywood drilled for the wing tube inserted between the wing and fuselage works well. If the cg is off from the wing tube the plywood \ can be drilled for the alignment dowel as well. Then a small 1/8" at the location of the CG will get it done. On my current 33% Champ build I am using a bathroom scale under the mains and a food scale under the tailwheel then calculating the CG from weights and measurements, looks like it will come it at about 40 pounds.