Does any one know if for example something constructed of .050 6061 t4 would be as strong or better if thinning down to .040 2024 t3 The KSI numbers show a much superior strength for 2024 The mono spar I Made a 60 degree triangle for my UL is 6061 T4 .050 it did not have a full third diaphragm it was not even the same thickness for what was ,the 3rd side I plan to make a new spar . this new spar will be enhanced by a full 3rd Diaphragm . .040 2024 T3 would be 4 lbs lighter. I plan to build a new wing even if I still use 6061 T4 it will be much lighter than this one A new wing with 6061 T4 different air foil 13 half span with a 14 ft spar will only weigh 28 lbs full span 27 ft Hornier tips as before will 56 lbs uncovered . Saving an additional 4 lbs would be nice.