Searched and found a couple of clamp-on devices to add a second bottle mount to my Quantum Race:
http://bikeforums.net/showthread.php...r+bottle+mount
But not sure they would work on my oversized seat tube. Also, not sure I want to clamp something around these beautiful tubes. Has anyone had a set of mounts drilled/brazed on? I would think an aluminum frame builder could manage this but wonder how much is involved. The bike is aluminum, smallish as a 52 cm semi-compact but a second bottle should fit. Any advice is appreciated, thanks.