The frame is probably the last place to worry about weight on a touring bike, but one thing is often overlooked when folks say that a pound (or two) doesn't matter. That 2 pounds may not make a big difference, but it is one of many choices and they all add up. With choices of 2 pounds here, 8 ounces there, a couple more ounces somewhere else, and so on pretty soon you have a very substantial gain in weight.

It may be worth the extra pound or even two in the frame, but I would caution against too liberally applying the logic that a pound doesn't matter.

Paying attention to the weight of each and every item can make a big difference. I think that I went from something a bit under 80 pounds of bike and gear on my first tour to 33 pounds of bike and gear. Despite a 45+ pound reduction, I maintained comfort. the ability to cook and camp, and was actually better prepared for cold weather on the more recent lighter tours.

You do need adequate durability and probably more so on a South American tour than a US tour and there always is the question of where to draw that line. Taking heavier items may make sense, but the weight should be considered and balanced against the required durability.

Bottom line, choosing to take extra weight for added durability or even added comfort may make sense, but it is a slippery slope to say that a couple pounds for one item does not matter.