• And my steel track bike is a lot stiffer than a lot of aluminium track bikes. Aluminium as a material is actually less stiff (lower Young's modulus) than steel. However the biggest contributor to stiffness of a tube is it's shape (stiffness is proportional to the 4th power of depth innit). So if you want a comfy bike, choose something with vertically slender stays in any material.

    CDFs have nice skinny stays.

    People who say "steel frames ride nicer than aluminium" are often desperately justifying their custom insta-wagons. And don't get me started on the mugs who buy titanium....

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