Quote:
Originally Posted by Eli Bingham
Just throwing it out there, but how does your position vary on these bikes? The biggest factor to overcome for speed on flat ground is air resistance. The fit on that black mountain frame in particular is very upright compared to a road race bike, as it has a long head tube and higher stack (and you see builds with spacers and upright stems for even higher stack). All things being equal, if you’re sitting more upright, you have more air resistance to overcome.
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I too was going to suggest that aerodynamics would be the biggest factor on a pancake flat course where you are in essence time-trialing. I bet that if you rode the same course on a properly fit TT bike with a helmet and bars, you would see a significantly faster time.