Chrisv40, I did some checks and the top end DB CrMo frames did not have curved braces and luggage rack attachment holes. So I removed all traces of this and installed CrMo tubing. Also the curved braces and brake studs were brazed in place and I wanted the upgraded components all tig welded with the appropriate filler material. I also decided to install a reinforcing rod between the seat tube and the rear brake hanger because I had seen a lot of flexing there when applying the rear brakes.
So reasons for structural changes were … added strength in jointed areas, improvement rear triangle rigidity, better breaking, correct alignment of brake stud and keeping with the race bike build theme.
So reasons for structural changes were … added strength in jointed areas, improvement rear triangle rigidity, better breaking, correct alignment of brake stud and keeping with the race bike build theme.