LouDeeter@aol.com wrote:
> In The Flying Scotsman movie, a feature film based on the story of Graeme
> Obree, there is a scene where Graeme "discovers" that he gets his most efficient
> pedaling while his legs are closer together than he can get with a normal
> bicycle. He then proceeds to build the bike with a very narrow bottom bracket
> using the bearing from a washing machine if I recall the scene correctly. I
> hadn't given a lot of thought to Q factor and the efficiency factor until then.
> I attribute it more to preference of the cyclist, but then, I'm never going
> to be confused with a fast rider. Lou Deeter, Orlando FL USA
>
All he might have discovered is that a narrow profile was more aerodynamic. It could even be that the aerodynamic gains offset a decrease in efficiency, no way of telling without extensive testing ;)
-- mvg
Marten Gerritsen
Kiel Windeweer
Netherlands