segovia wrote:
TonyKarol wrote:
Should be OK if the top is left suitably stiff .. OMs can have 1/4 x 1/2 bracing anyway ...
I suppose it all boils down to the sq mm 1/4 * 1/2 = 80sq mm - so I suppose 10 * 8 would - should be the same
J
Well 10 * 8 gives 80 but if you're talking about getting the same stiffness as a brace that's tall and narrow with one that's shorter and wider then it doesn't boil down to sq mms.
A brace twice as wide is twice as stiff, so far so good but the height doesn't work the same way. The stiffness is a cube function of the height. Double the height and the brace is eight times stiffer. That is, it will deflect 1/8 as much as one half as high.
So loose a little height, loose a lot of stifness.
John