This is a longshot, but I'll give it a try. I have two Redline CX frames. Both failed in the same place, where the rear derailleur hanger attaches. It's a poor design because the bolt hole removes most of the structural metal in that location. There is a pic of the failure here: http://www.flickr.com/photos/25206767@N06/4467908902/
My question: does anyone know of a welder locally (Seattle area) who can weld this so it is rideable again? My idea is to make these into single speed frames for myself and my son, or just weld the frame and hanger together and try to get a few more years out of them. Otherwise they are off to the dump which is very hard for me to do. They are aluminum but I don't know the particular alloy. I'd probably pay about $50 per frame.