While steel and carbon might seemingly sit at the ends of the spectrum when it comes to materials used in bike frames and components, they really are just bedfellows. It's all about how they are used, rather than any inherent properties, that defines their performance; steel frames are famed for their liveliness and comfort, but this only achieved by matching quality tubing with an effective design. Similarly carbon is heralded for its light yet stiff properties but without a thoughtful application these attributes are wasted.

Which brings me on to our headliners this week. We have a steel bike from Colnago, a set of climbing wheels with carbon spokes, and a thoroughly modern race bike that's doffing its cap to the first carbon bike to win le tour. All three showcase said materials and

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