Originally Posted by Thylacine
Which is stiffer - a ø35 tube at 0.7/0.5/0.7, or a ø31.8 tube at 0.8/0.6/0.8? I'm not a Physicist Nessism, but if you want a stiffer frame, I know which tube I'd select, and it isn't the latter.
I wouldn't worry about gussets, Kendall. Most are poorly designed and actually do the opposite that they're supposed to do and are pretty unnecessary on the road bike, even if you are 190lbs.
The 35mm tube will be stiffer, no doubt. But if both tubes were the same diameter, the thicker one would be stiffer.