Here's a blast from the past. Just weighed the frame all by itself on my Ibis Cousin It (circa 1990) and it comes in at 12.5 lbs. Probably makes it a bit difficult to beat the Dragonfly posted above. Anybody have some other actual frame weights handy for comparison? I did find a posting for a Calfee frame at about 6.7 lbs but haven't seen any numbers for steel or aluminum frames.