T.R | Title | User | Personal Name | Date | Lines |
---|
2139.1 | Not an answer, but... | SHALOT::ELLIS | John Lee Ellis - assembly required | Tue Dec 03 1991 17:56 | 16 |
|
Part of perceived comfort/discomfort is just what you get used to.
However ... can you describe in which ways you are less comfortable
with the lower saddle height? Knee soreness? Lower back? Other?
The problems you'd get with too high a saddle would be things like
pelvic-area (sit-bone) soreness, ankles perhaps. If you did not
experience these with the higher saddle *and* did not rock side-to-side
when pedalling, it's probably not too high.
How long (hours, miles) were your rides during the season?
What speed, roughly? (I'm trying to assess how much you were pushing,
and how long you were in the saddle at one time.)
-john
|
2139.2 | More detail | RCOXX3::EDWARDS | | Tue Dec 03 1991 18:17 | 27 |
| >>can you describe in which ways you are less comfortable
with the lower saddle height? Knee soreness? Lower back? Other?
It wasn't really pain, I just didn't feel as strong. If anything, my knee
hurt some and my lower inside quad (just above the knee) felt cramped-up.
>>How long (hours, miles) were your rides during the season?
Typically 3 nights per week 25-30 miles. Anywhere between 50-100 total
on weekends.
>>What speed, roughly?
I averaged around 17-18MPH with some traffic light stops.
>>pelvic-area (sit-bone) soreness, ankles perhaps
I didn't have any of this.
>>*and* did not rock side-to-side when pedalling
I didn't think I did, but my initial experience on the rollers may lead
me to believe otherwise (I think it was swerving more than rocking).
Thanks for the ideas & interest.
Ray
|
2139.3 | 95% sounds PAINFUL | IDEFIX::HEMMINGS | Lanterne Rouge | Wed Dec 04 1991 03:04 | 13 |
| I'm not sure how these measurements are taken, but not knowing something never
stopped me expressing an opinion before....
I measured BB axle to top of saddle, along the seat tube.
I then measured inside leg, to ground, in bare feet.
The result was 85%
I've ridden just over 8000 km to date this season, with the longest ride 245 km
in a day. I don't get saddle-sore, but then I'm still faithful to a Brooks Pro
- I tried a Turbo and it nearly killed me!!
PS I read Hinault's book on position and decided I needed a Cray to work it all
out... ;>)
|
2139.4 | use technology | USMRM5::MREID | | Thu Dec 05 1991 08:00 | 14 |
| If you have access to a video camera ...
Videotape yourself from the front, rear, & side. It's easy
to analyze a videotape (can play it in slo mo, etc). In an issue
of Bicycling about a year ago there was a good article that
described what to look for on the videotape (angles, measurements,
plumb lines, rocking, position, etc). Beats looking at yourself
in a mirror, or just trying to "feel" the position.
If you want to try videotaping, I can make a copy of the article
and send it to you.
Regards,
Mark
|
2139.5 | Yes, Get a Picture | BOOKIE::CROCKER | | Thu Dec 05 1991 11:23 | 62 |
| I second Mark's suggestion.
Still shots can also be a help. Several years ago I received some
1 x 1s from a professional who photographed me in the Burlington
Criterium. I couldn't believe how bad my position was. Cramped
back, cramped shoulders, legs not extended enough, not horizontal
even when I was way down in the drops.
I went through five years' worth of WINNING (good source for positions
the pros are using), comparing those pics with my position. As a
result I did the following:
o Traded an 11cm stem for a 13cm (and my next frame will be a 55cm,
after riding a 54cm for 15 years).
o Dropped the stem as far as the headset would allow.
o Raised my saddle half an inch (gradually, over two years).
o Went from 40cm bars to 44cm (much easier to breath).
Last year the same photographer caught me in a solo at the Pawtuckett
Criterium, and the improvement was obvious:
o Back straight and horizontal
o Arms more extended (room for more, though)
o Legs more extended (generating more power)
People with cramps and sore backs often blame these on being too
extended, but sometimes they're not extended enough. The same
principals for stretching after a workout apply to position on a
bike -- you want to extend as far as you can to relieve stress
(but without inducing stress).
The pros do not use the positions they do simply because they're
racing and want to be aerodynamic. They often ride for eight
hours straight on challenging terrain, so they need to be comfortable.
I've been asked twice this year, "How can you ride like that?" and
the answer both times has been comfort, with aerodynamics an added
dividend.
Old school wisdom is stem raised and saddle not too high. Sean
Kelly still abides by this (and still uses toe clips and straps),
but look at Lemond, Fignot, Anderson, Breukink, Mottet, and Indurain.
Their saddles are all way up, and their stems way down, even in the
mountains. Also, there is a trend toward longer top tubes by some
of the frame builders.
My point in mentioning Kelly is that position is not the key to riding
well, at least for a rider of his caliber. But it definitely helped
me.
By the way, my saddle position is roughly .883 of inseam (center of
bottom bracket to top of saddle). This is the position riders
coached at one time or another by Cyrille Gimard (Lemond, Fignot,
Hinault) all seem to swear by. This is quite extended, so my
question on the basenoter is: Where is the .95 applied? Bottom
bracket axle to saddle top?
Justin
|
2139.6 | gradually spread out works | SHALOT::ELLIS | John Lee Ellis - assembly required | Thu Dec 05 1991 13:35 | 23 |
| Justin's experience is mine, to a limited extent. (That is,
I've not gone nearly as far as he has.) In the last year,
I have lowered the stem, lengthed the stem extension, and
straightened my back some. I now feel comfortable riding in
what amounts to a fairly aerodynamic position. (Note: my
saddle positioning was already roughly correst, and the
handlebars were already wide.)
It took some time for this to be comfortable. The back muscles
have to stretch out and strengthen themselves, for example. So
if you do this, be patient, and also enlist the help of a knowledgeable
bike-fit person, e.g., at your bike shop.
There are drawbacks - for example, more neck and eyestrain, because
your head and neck are not "resting" on your spine as much - i.e.,
they are suspended more horizontally.
But it is now odd to be talking to someone biking next to me -
someone who's roughly my height (standing), and crane my neck
to look up to him/her, because he/she is towering over me in
a more vertical position. :-)
-john (with apologies for the further digression from .0)
|
2139.7 | | AD::CRANE | I'd rather be on my bicycle! | Tue Dec 10 1991 13:43 | 32 |
|
I agree with what Justin and John have already said.
I would like to add a little bit about saddle height as compared to
crank arm length.
When I bought my new bike I made a lot of small changes to the fit
based on what I felt were shortcomings on the my old bike.
I bought the same size frame (56cm) center to center.
The Top tube is 1/2 cm longer (56.5cm).
The cranks are each 2.5mm longer (172.5mm).
I went from a 115mm stem 125mm.
I went from 40cm bars to 44cm bars.
I also used a deeper drop in the bars.
When I set the bike up I was very carefull to use the same saddle
height. (from center of bottom bracket to top of saddle) I only had to
ride about 50 yards to know that the saddle was to high. I have since
lowered it a 1/2 inch or so in small increments(I'm not quite there)
You have to take the crank length into consideration when you set saddle
postion. If .883 of you inseam fits for 172.5mm cranks it won't fit for
170 or 175mm cranks.
I really like the Idea of video taping and then analyzing your position
from that. Also, I really like the wider bars, they are much more
comfortable. My position is also stretched forward another 15mm and I
like this more.
John C.
|
2139.8 | another setup | LEGUP::SHORTT | John Shortt / DTN: 266-4594 | Wed Dec 11 1991 15:17 | 29 |
|
re: .0
Did you lower the saddle to get more stability? Or, are you trying the
.883 figure? I thought the .883 would be higher than the 95% method.
From your description, I would imagine that if you are stretched out
properly, have the seat at 95%-.883 of your inseam, stem about 7 cm
lower and the saddle setback correct, you should have enough weight on
the front end for stability. I remember the Waldon article specifying
48% weight on the front, 52% rear. I have my bike set up as LeMond and
Hinault suggest. Seat height .883, setback about 8 cm with a 73.5
degree seat tube (works with the plumb line as well), stem 8 cm lower
and the weight came out to just a tad more weight in the rear (55%). I
feel this may be because I need a 13 cm stem (12 now). Even so, I have
no problems with front end maneuvering and momentum; but, I can't even
begin to ride the rollers with no hands!
My first ride on the bike was with the saddle higher. I didn't realize
that the guy fitting my cleats had forgot to lower it after the session
(even though we both carefully marked it). After a nice hilly 50
miles, I felt a soreness in my ankles/calves, which seemed to be from
the heel being too high throughout the motion. Once lowered, no
problems there.
Do you need to be more forward - saddle, longer stem or top tube?
Is your headset working properly? Has the instability gone away?
john
|
2139.9 | just kidding .... | LEGUP::SHORTT | John Shortt / DTN: 266-4594 | Wed Dec 11 1991 15:29 | 2 |
|
....about the headset :-).
|
2139.10 | wondering | LEGUP::SHORTT | John Shortt / DTN: 266-4594 | Thu Dec 12 1991 18:07 | 4 |
|
Does anybody lower their seat in winter due to additional clothing?
john
|
2139.11 | | SHALOT::ELLIS | John Lee Ellis - assembly required | Thu Dec 12 1991 18:42 | 6 |
|
Ok, John, I can't resist that one... I think in some cyclists' case
(Greg Lemond comes to mind), you *also* have to take into account
the extra physiological padding acquired in winter. :-)
-john
|
2139.12 | USUALLY :-) :-) :-) | WMOIS::GIROUARD_C | | Fri Dec 13 1991 05:59 | 3 |
| I generally do, but alas, my vernier caliper is out for repair :-)
Chip
|
2139.13 | Raise the stem | NEMAIL::DELORIEA | I've got better things to do. | Fri Dec 13 1991 09:27 | 11 |
|
� Does anybody lower their seat in winter due to additional clothing?
No, but I do raise the stem in order to bring the handle bar up an inch
or and inch and a half. I might even get out an old 80mm stem to
replace my normal 120mm. It really makes it easier to ride with all
the extra clothing on. Never mind the extra lbs.
Tom
|
2139.14 | | DANGER::JBELL | Zeno was almost here | Fri Dec 13 1991 09:30 | 3 |
| > Does anybody lower their seat in winter due to additional clothing?
Or should it be raised due to thicker boots?
|
2139.15 | Lower = less knee pressure | KAOFS::W_VIERHOUT | He's dead Jim | Fri Dec 13 1991 14:57 | 14 |
|
Yes I do lower my saddle in winter about a centimeter maybe a little
less. I would'nt worry about it if I was only wearing one layer and
some days two layers of clothes on my butt. However; sometimes I wear
3 layers and most winter days 2 layers. Also I believe a slighly lower
saddle relieves pressure on the knee and with -4C tempertures and 20,30
and maybe 40km/hour winds I feel my knees need all the help they can
get. Up here we have a saying called "Easter knee". They tell me it is
a sore knee condition due to too much hammering in cold wind and
cold weather. Anyone else heard of Easter knee by that name? or is this
just local Toronto B.S.
Wayne V
|
2139.16 | | DANGER::JBELL | Zeno was almost here | Fri Dec 13 1991 15:40 | 8 |
| I also lower my seat a little, but it's not really due
to the extra layers. The thickness of the heavy army
surplus wool pants is 3mm at most.
The reason I lower the seat is so that I can get my foot down
quicker if I slip on an icy spot.
-Jeff Bell
|
2139.17 | UK too... | IDEFIX::HEMMINGS | Lanterne Rouge | Mon Dec 16 1991 02:37 | 5 |
| "Easter knees" was a very common description in the UK, in the 1960's -
it was a painful condition reckoned to have been brought on by wearing shorts
before Easter.... Mind you, in those days, we had the real loonies who rode all
the year round in shorts, they were really crazy because they would wear jackets
hats, scarves etc, but still keep to shorts - a bit like not eating quiche....
|