I've been trying to track down a Columbus Air frame for quite a while, and it seems like whenever one pops up there are troubles, like... it is the wrong size / I get outbid by a bajillion dollars / it is far far away where shipping is difficult.
Recently, I decided that my odds might be better if I tried to track down all of the bits and pieces of tubing and braze-ons and either do the framebuilding myself or find someone to do the framebuilding for me (I'd prefer the former!)
Anyway, the search has gone better than expected. I had some good luck contacting framebuilders who had posted about having extra Air stuff ...even though some of the posts were super old - one recently-retired framebuilder sold me a whole bunch of his remaining Air stuff, and even included some bits that I thought might be very tricky to find, like an Art Stump aero shifter boss and an aero rear brake bridge. The only things that he didn't have on hand were the Air fork blades, top tube and seat tube - though he included a very attractive Tange Aero fork crown and blades, and a SL top tube and MS down tube.
He even showed me some of his Air frames (including a bike which had Air tubes except for an upside-down MS down tube bilaminate-brazed in place - pretty classy.)
Anyway, I figured that I would start posting here to keep track of progress, and if anyone out there has a spare Air seat tube, top tube or fork blades, please let me know!)
Parts-heap thus far: