Kama Sutra of Bike Positions
Nothing is more important to performance
and comfort than your position. We look at photos of our customer's
positions, good and bad, and give you the analysis of what makes
a good riding posture here.
No other single factor influences
the quality of your experience on a bike more than fit. Whether
you are looking for increased comfort, better endurance, better
handling, more speed or all of these things, your posture on
the bike is the single most important factor.
To have good bike position you need
perfect bike fit. This means the correct frame geometry and
design, the correct frame size, the proper stem length and rise,
the right handlebars, the appropriate pedal system for your
riding style, the right shoes and cleat setup and a host of
other adjustments.
During 1999 and 2000 we photographed
over 700 riders in our store and at events to evaluate their
position. Many of them are customers we built bikes for. Some
are cyclists we saw at events. Each photo we picked for this
feature has something to say.
Use these photos as a guide to think
about your own position and where improvements can be made.
Remember, however, that fit and position is a highly individual
matter. What works for one person may not work for you. Just
because Lance Armstrong sits on his bike in one position does
not mean that position would work for you. If you do use this
information to learn about the terminology of bike fit and familiarize
you with some of the concepts, you will be one step farther
along the path to improving your fit.
These photos were all taken with
riders pedalling. None of them are posed. There is a mix of
indoor trainer photos taken during fit sessions at Bikesport,
Inc. and photos shot on the road, in the real world, during
events we sponsor. Note that some of the photos were reversed
180 degrees so all the riders face the same direction for comparison.
| Bikesport
uses these components to adjust fit on every road and
triathlon bike we sell.
Once we use measurements to determine your best frame
geometry, design and frame size we change some, most or
all of the following to get you in the best possible position:
Frame
Geometry (Which geometry is right for you?)
Frame Design (What frame design is best for your riding
style?)
Frame Size (Which frame size should you be on in a particular
model?)
Seatpost
(Do you need set back, center mount or forward post?)
Saddle (Which one is tolerable to you?)
Saddle
Height (Where should your saddle be?)
Saddle Fore/aft (How far forward/back should I sit?)
Saddle Angle (what angle will be the most tolerable?)
Cranks
(What length do you need?)
Pedal System (What "Q" factor and style pedal
and shoe do you need?)
Cleat Adjustment (Where should cleats be positioned?)
Stem
(What length? What rise? What stack height?)
Handlebar (What bend and design? What drop, length, width?) |
Be sure to click on the photos
to enlarge and see fit comments.
| |
|
| 6 O'Clock
crank position. Perfect position. Flat "A" back. |
2 O'Clock
crank position. Very poor position . Arched "B"
back. |
| |
|
| 12 O'Clock
crank position. Excellent knee/elbow interval. Perfect
posture. |
12 O'Clock
crank position. Slightly arched "B" back. Very
good posture. |
| |
|
| 2 O'Clock
crank position. Excellent position. Arched "B"
back posture. |
6 O'Clock
crank position. Perfect leg extension, excellent reach.
Arched "B" back posture. |
| |
|
| 3 O'Clock
crank position. Excellent powerful, compressed position.
Arched "B" type back. |
6 O'Clock
crank position. Excellent leg extension with perfect reach.
Arched "B" back posture. |
| |
|
| 2 O'Clock crank position.
Slightly arched "B" back. Very good overall. |
Almost 2 O'Clock crank
position. Note elbow to knee clearance. Extremely long
femur bone. |
| |
|
| 2 O'Clock
crank. Excellent posture and relatively flat back. |
6 O'Clock
crank. Very good, powerful position although slightly
high. |
| |
|
| 6 O'Clock
crank. Extremely poor base bar position. Saddle too low,
rider too upright, reach too short. |
12 O'Clock
crank position. Position too cramped. Femur/torso angle
too acute and cramped. |
| |
|
| 12 O'clock crank. Excellent,
although radical, low powerful position. Slightly compressed.
(photo reversed for perspective). |
Good powerful position.
Too high with very arched back. |
| |
|
| Shot
from a forward angle, showing that rider is too high on
bike. |
Good
position from shoulder back, but too extended from shoulders
forward. |
| |
|
| Although somewhat cramped
and rounded in shoulders, a very low, narrow aerodynamic
position. |
Extremely poor, too
upright and cramped position. (Aero bars on standard road
geometry). |
| |
|
| Although too high, a
very good, comfortable power position with good joint
alignment. |
Back too arched, torso
too compressed, reach slightly too long. |
This diagram describes better than
any photo the difference between a road geometry bike and a
specific triathlon geometry bike. these lines were superimposed
over actual photos of riders on thieir bikes while pedalling.
Note that in the triathlon position
(red lines) the rider DOES NOT sit farther forward, but rather,
the feet are farther back. Also, note the, more relaxed angles
of the rider's skeletal alighnment on the triathlon position.
This is the REAL difference between
a road position with aero bars and a triathlon position.