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Old July 28th 08, 05:35 AM posted to,alt.rec.bicycles.recumbent
Edward Dolan
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Posts: 14,212
Default TdF and recumbents

"Tom Sherman" wrote in message
Edward Dolan wrote:
"Tom Sherman" wrote in message
Edward Dolan wrote:
"Tom Sherman" wrote in message
And of course, there are the mountain stages, where conventional
wisdom says that recumbents can not climb. The first thing is to throw
out all personal observations here, since they invariably involve
recumbents that are heavier than a state of the art CFRP lowracer and
riders considerably less able than a UCI professional.
Excuses, excuses, excuses!

Ed Dolan demonstrates his ignorance of what is and what is not a
scientifically valid comparison.

Tom Sherman likes to take everything to its extremes. Frankly, I don't
give a damn what transpires on the freaking Tour de France, but I am
interested in what transpires on week long group bike tours where you
have got a nice variety of riders, most of whom are advanced. You will
never see recumbents outpace uprights going up hills on such rides -

Ed Dolan conveniently ignores the absence of world class riders and state
of the art recumbents on such touring rides.

Who cares about them. I only care about us amateurs. And among us amateurs,
it is no contest. Uprights win every time because of hills.

Here is a hint for Ed - if upright A is faster than recumbent B at a power
output of 150W, it does NOT follow that upright A is still faster than
recumbent B at a power output of 400W, due to drive train and rolling
resistance increasing linearly with speed, but aerodynamic resistance
increasing with the square of speed. Such is obvious to an engineer or
scientist, but not to Mr. Ed Dolan.

I am only interested in what a professor of human anatomy and physiology has
to say about it.

The key is to remember that aerodynamic resistance increases with the
square of the rider's airspeed. Therefore, for average club riders,
both upright and recumbent riders will be going slowly enough that
rolling resistance and mechanical losses in the drive train will
dominate, which favors the upright. However, with a professional level
rider putting out 400W on a climb, speeds become high enough that
aerodynamics does matter, even on a relatively steep climb, and an
upright rider out of the saddle is not very aerodynamic. Is the
aerodynamic advantage of the recumbent at very high rider output
levels enough to compensate for the advantages of the upright? I do
not know, and more importantly, neither does anyone else.
Aerodynamics is only part of the story. The other part is primate
anatomy and physiology.

Of which Ed Dolan apparently knows little. Has Ed ever read any of the
papers by Danny Too addressing this issue?

More blather about primate anatomy and physiology and less blather about
bicycle aerodynamics, if you please. Either get the equation right or
forget about it.

Mr. Ed is unaware of results showing similar sustained aerobic power in
both the upright and recumbent positions.

That is impossible. We did not evolve to be recumbent, but to be upright.
You have got humans confused with slugs.

Please rush me a telegram if and when a recumbent ever beats an upright
in a professional cycling race in the mountains.

Please rush me a telegram when the UCI allows a recumbent to compete in
such a race.

Surely there are near professional type races in the mountains which pit
uprights against recumbents. Find out the results of such races and
report back to me.

Go to the article on page 14 about the Trondheim-Oslo event:

Some other time as I am presently having an attack of lethargy.

I am too lazy to do anything these days other than contemplate my navel.

No argument on that point!

I am becoming a Brooding Buddha in my old age.


Ed Dolan the Great - Minnesota
Saint Edward the Great - Order of the Perpetual Sorrows - Minnesota


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