Tim McNamara said:In article <[email hidden]>,
John Forrest Tomlinson said:Tim McNamara said:In article <[email hidden]>,
John Forrest Tomlinson <[email hidden]> wrote:
> On Sun, 18 Feb 2007 18:49:26 -0700, [email hidden] wrote:
>
> >If things were ever actually set up at the very farthest end of
> >comfortable motion, then they'd probabably start hurting within
> >an hour or less.
> >
> Let's play word games. At the limit of range of motion at which
> the activity can be repeated thousands of times w/o it hurting.
YMMV, everybody's different, and other boiler plate disclaimers.
Frankly that sounds like a poor way to set up your bike. I haven't
seen you on your bike, so I can't comment about your fit. And
frankly, it's your bike and if it works for you, then that's what
counts rather than the armchair opinion of a guy 1000 miles away.
Yes. Here I am being fit by the key fitting technician of a major
pro bike racing team that also runs a facility that fits racers of
all ability levels. He was a guest of our club some years ago and
assessed and fit a bunch of us:
http://www.jt10000.com/team/tgal/dram1.htm
Mmmm. To my eyes I see a fair number of pros who look poorly fit on
their bikes- rocking hips, not able to ride in the drops looking
comfortable for hours at a time, etc. Fit is often done by formula from
static measurement of relative anatomic lengths, but IMHO this is quite
likely to be suboptimal because of dynamic differences in motor
function. Sometimes what looks like poor fit works well for the rider-
Sean Kelly, for example.
When I fit bikes to people, my goal has always been to find a position
that is comfortable. Having them at the extremes of their range of
motion rarely is and IMHO increases the risk of repetitive stress
injury.
My position is comfortable. I can ride in the drops at speed for
extended periods of time. I can do lots of things for a long time. I
can't do the same if you move my position in certain directions a bit.
So what?
So I don't get what the problem is other than that it makes some
people in RBR think I (or the people who fit me don't know what I'm
doing).
The Mapei guys that fit me based the position did on measurements of
limb length. Their fiting system is, at their facility, based on
watching people ride at racing power outputs on a trainer, while video
taping them. They then look at the angles between joints and specify
a range of angles that are appropriate. The angles that are
appropriate are based on norms developed by looking at riders who ride
well at various ability levels w/o injury. The norms are more
"extreme" the higher the level fo the rider -- they assume that the
higher level riders are more flexible and have more recovery work done
to all othem to be more stretched out. But they take rider flexibilty
and comfort into account.
They didn't have the video set-up when they did the fitting for us,
but worked it by eyeball with a bunch of questions. One of the women
they set up was relatively new to the sport (at the time) and had a
pretty "pro" looking set-up -- very long and low. So they said "Oh,
you look good, but we don't think you can ride comfortably like that.
Do you ride in the drops much" She says yes. THey said "Let's see
it" and they watched her. They said "Pretty good, but how flexible
are you, can you touch your toes easily" and she says "I used to be
very stiff but I've worked on it" and then demonstrates excellent
flexiblity. So they say "Keep your position."
So again, so what if some pros have bad fit?
So what if you change my position a little in one direction it would
be uncomfortable? "m inside the range that would cause repetive stress
injury, but a little movement woudl bring it up -- that's why I say I
could notice slightly longer cranks if you didn't raise my saddle to
compensate (the point of this thread). It's comfortable and effective
now. So what?
I should move my saddle further away from the edge (lowering it,
increasing range of motion at the top of the stroke) so that people in
RBR can say "see, you can't tell if it's too low anymore."
I just don't get it.
--
JT
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