This month I would like to present PICCHIO SPECIAL all DURACE AX
Note the custom shaped tubes by Angelo Picchiohttps://picasaweb.google.com/1056342234 ... LDURAACEAX
I must admit to having been rather superficial in my initial viewing of the Picchio. I have only now understood the lengths that Picchio went to with this frame, and I am really impressed. I'm not sure if all the forming of the tubes is necessarily what I would want on my own bike but it is certainly a tour de force.
The seatstays have been "folded" inwards below the brake bridge, I take to stiffen up the tube and perhaps even to improve aerodynamics.
The seat tube has been shaped to allow the rear wheel to get closer and to perhaps create a bit of a cowling around the rear wheel. I remember how everything was trying to do this back in the aero-craze days of thirty years ago.
The down tube is likewise "folded" to add what was thought back in the day to add rigidity, however I don't believe this to be a case where a semi-production frame-builder like Colnago has had a tubing supplier do teh work for him. This looks more home-grown, making it all the more impressive. Given the frame, the Dura-ace AX group makes perfect sense.