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Highest Vertical PSD Between 40 - 60 Hz
On Mar 28, 4:31*pm, Simon Mason wrote:
On Mar 28, 2:53*pm, thirty-six wrote: It was interesting to read that you use less power to ride an aluminium frame than a steel one due to the stiffer frame of the aluminium. Carbon fibre was a close second. I think you have misinterpreted these results. *It seems the cyclist was able to put out a greater natural effort with the lower shock transmission of the steel frame. That's a pity - I only have two ally bikes and a carbon one. I don't fancy having to get another one made of steel. Vibration cuts into your performance. *A well-conditioned professional racer is also less receptive to the negative stimulation of road vibration, so for this to show up at 220 watts is quite significant for racers and it makes it obvious why those first frames in the professional peleton 'made fwith carbon-fibre tubes' were frequently mock-ups actually made with Reynolds 753 * It is born out in practise that at sustainably fully aerobic levels greater power is put out with steel frames. *If you want to take it to its conclusion, use a softbeam frame, but to be compliant with most bicycle racing rules one cannot use that marvelous pattern and must play with wheels to get the ideal response.- I don't think that I put out enough in the way of wattage for me to notice any difference, my carbon bike feels like it is laying down all of the power that I put out, so I am more than happy with it. An interesting piece though. -- Simon Mason The vibration limits your capacity for aerobic metabolism. Steel is good in that you can relatively easily swap tubes around to get the desirable response but much can be done with wire spoke wheels of 28/32/36 spokes with medium weight rims. |
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