Nikolai wrote:mikesbytes wrote:Back on topic. Last year I did the NSW Masters ITT champs on a road bike with clip-ons, then I borrowed a TT bike and some head 3 spoke wheels, took them down to Victoria for the Australian Masters ITT champs. Carefully comparing the data with the other NSW riders I concluded that I was 3/4 kph faster on the ITT / tri spoke than my road bike with clip-ons.
A TT bike alone will trump a road bike with clip on bars every time simply because of a better aero position you can achieve on a TT bike (assuming the set up is correct). I'm not sure about 3-4 km/h difference though. You could be comparing apples with oranges, e.g different weather/road conditions, different form/fitness level , different distance (perhaps) etc.
Sorry by 3/4 I mean 0.75
A lot of analysis was done to determine this figure and cross check it
Ride position was the same, the only difference of note was 0.25mm of crank length.
Anyway the point was that for me, no bike was going to make the 4kph being looked for