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Thank you Brent for pointing me in the right direction. Brent helped me
solve the question "how hard can you land?". After sifting through CFR
23.471 through 23.511 for landing gear load requirements. I found the one
simple rule of thumb solution

Sec. 23.473 Ground load conditions and assumptions.
(e) Wing lift not exceeding two-thirds of the weight of the airplane may be
assumed to exist throughout the landing impact and to act through the
center of gravity. The ground reaction load factor may be equal to the
inertia load factor minus the ratio of the above assumed wing lift to the
airplane weight.

To put this simply, the wing lift of two-thirds of the weight of the
airplane gives me 1123 pounds of extra weight in addition to the 100lbs I
originally used. The maximum specified landing weight is 1685, The maximum
taxi weight is 1785. When landing we can say that the wings will hold off
2/3*1685=1123 lbs. at impact. So, we have the 100 lbs plus 1123 lbs to
impact with. The resulting "G" force of landing impact should allow us the
taxi weight of 1785 plus the weight the wings are holding off 1123 which
equals 2908 lbs. The maximum allowed landing G forces would then be this
weight 2908 lbs divided by the landing weight 1685 lbs which equals 1.73
G's. That is a fairly hard landing, a landing you would really feel!
It eases my mind to know that my original idea that the landing force would
only be 1.06 G's to make 1685 lbs go up to 1785 lbs. Is really 1.73 G's to
make 1685 go up to 2908 lbs because the wings are holding off 1123 lbs..

Happy Landings
Ed
L360
Watsonville CA