Where the C59 was packing a down tube that peaked at around 44mm in width, the C60 pushes those limits to 66mm at the point where it joins the bottom bracket lug, and 51.5mm at the end of the seat tube compared to 34.9mm for the C59. But unlike its C-series carbon predecessors, the ‘stellar ribs’ of the Master tubes extend the length of the top tube and down tube and part way up the seat tube (which must end in a round profile to accommodate the seatpost), meaning the lugs also get the crimped shape.Ĭolnago claims this adds stiffness beyond that of the C59 and, while it’s hard to contest this claim without saws and a degree in composite materials, I’m not going to argue with a man who has built bikes for Eddy Merckx.Īnd if stiffness-obsessed armchair engineers need more convincing, they need only examine the tube diameters. Except for forays into aluminium with bikes such as the Dream, and ‘monocoque’ bikes such as the C35, Colnago has built its flagship frames in the tube-lug mode, and there’s no let up with the C60.Īs with its forebears, the C60 incorporates the company’s iconic crimped Master tubing.
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