I have a Flite 700 frame with a broken braze-on for the front derailleur. The frame was replaced under warranty and the former owner gave me this frame for a song. I'm interested in building a bike for my wife to introduce her to road bikes and was wondering what my options were. The downtube is an oval with a recess in the back and I don't know of a clamp-on that would work. I've considered an E-type, but was wondering what else might be available that I'm not aware of.