I have been thinking about a Diehl style landing gear made from aluminum
instead of fiberglass. I am not sure of the cost difference, or weight
difference. Right now I am researching the differences. Below is a list of
different aluminum alloys. Hope all this stays lined up. I thought some of you
may be interested in this. I think the Diehl fiberglass main gear are close to
4 lbs each and 24" long. The weights below are per cubic inch.
Larry H.
2024T3 2024-T361
2024-T6 7075 7075-T6/T651
Weight/cubic inch 0.1 lb 0.1 lb
0.1 lb 0.102 lb 0.102 lb
Ultimate Tensile Strength 70000psi 72000psi 61900psi
33000psi 83000psi
Tensile Yield Strength 50000psi 57000psi 50000psi
15000psi 73000psi
Elongation at break 18% 13%
5% 17% 11%
Shear Strength 41000psi 42000psi
41000psi 22000psi 48000psi
Annealing Temperature 775 F 775F 775F
775F 775F
