• 853:

    UTS: 1250-1400 MPa, density 7.78 gm/cc

    953:

    UTS: 1750-2050 MPa, density 7.8 gm/cc

    The truth of the matter is that cheap 4130 Cr Mo is plenty strong enough for a track frame, and making it in ⅛" over the old 1930s standard tube diameters will make it stiff enough for anybody who can't put out over 2kW in a sprint. The thing that nobody has ever got close to with steel is combining stiffness and aerodynamics to the degree that carbon fibre frame makers can, which is why all elite track riders use carbon fibre frames.

    If you actually think those 'teardrop' 853 tubes represent any kind of aerodynamic benefit over round tubes, you need to go back to aerodynamics school too. For all your bluster about 20 years of genuine technological advances being all marketing, the actual facts point to so-called 'aero' steel tubing being the thing which has the greatest excess of hype over substance.

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