OSYMETRIC trails are nor oval nor elliptical this is a TwinCam.
It has been studied so
that the radius of the plateau varies in proportion to the force
produced by the leg of the TDC to bottom dead center.
Indeed: to dead leg is 2
times lower than when the crank is horizontal, which implies a slower
angular velocity at top dead center which produced a choking muscles,
including triceps because torque resistant too
strong for the leg, not a recovery zone as it is commonly admitted.
The aim of the plate
geometry has been to facilitate the work where the leg is low (top dead
center and bottom dead implying a small radius) and provide jobs where
the leg is strong (crank around horizontally which
implies a large radius.
In summary, where the leg
is small radius is low, where the leg is strong radius is high among
both the radius increases proportionally to the strength of the leg
which can never be the case or with an oval and either with an
elliptical (preload curve as symmetrical lines perpendicular to 2).
Specifically OSYMETRIC trails of 54 teeth at top dead center and bottom dead center, its
radius is equal to the resistance of a plateau of 50 teeth round.
Between the 2 points
death grows proportionally to the strength of the leg to reach a radius
of 58 teeth around the crank horizontal and declining thereafter again
be equal to a plateau of 50 teeth at bottom dead center, the gear is obviously equivalent
to a round tray of 54 teeth.
Thus a plateau of
variable geometry that behaves like a 3rd derail either according to the
gradient but the strength of the leg.
Conclusion: the legs move
faster the dead who are relatively less "dead": no longer effective.
The newspaper "THE CYCLE"
of November 2005 which studied the 5 trays atypical ranked No. 1: the
pedal OSYMETRIC for its efficiency, weight and price, pointing to
constant power (250 watts) it generates a heart rate more weak economy and thus
The various studies:
* Biomechanical Study
* Study physiological
society iTop, cardio-thoracic center of Monaco, Didier BARANI:
* Study electromyography
* Study with mathematical
Converge in the same
* 1 Max Aerobic Power
higher than 10%
* Aerobic thresholds
* Less acidity by about
* A High Power Anaerobic
higher than 10% in the RS by renowned sprinters.
* BOBBY Jüllich: Olympic
medal clm 2004, victory in Paris-Nice 2005 International criterium
victory in 2005, winning the Tour of Benelux 2005, TT of the 2nd round
of Germany 2005, behind Ulrich victory LUK challenge to Armstrong in
2004 , TT victory in
* VINOKOUROV: 3rd TT 2004
in Verona, Italy World Championships, 4th TT world championship in
Spain 2005, 4th in France last TT 2005.
* Laurent Brochard: 2nd
TT du Dauphiné Libéré in 1997 behind Chris Bordman
* Thierry MARIE: 2nd TT
World Championships in Sicily in 1994.
* World Championship 2007
No. 1 JULIEN LOY No. 2 X.
Le Floch N ° 3 S. BERLIER
* Embrun 2006
No. 1 HERVE FAURE
* Embrun 2007
HERVE No. 1 No. 2 FAURE
P. BRINGER No. 3 S. BERLIER
All equipped OSYMETRIC
* IRONMAN MALAYSIA 2007
No. 1 Xavier Le Floch
* IRONMAN AUSTRALIA +
December 2007 APRIL
No. 1 Patrick Vernay
Champion Fabien Barel
Downhill World also like it.
STUDIES CARRIED OUT:
The biomechanical study
* A better adaptation of
the torque resisting torque which involves pedaling round automatically.
* The couple is a more stable pedal which means for the grip + MTB (Motor +) + 10% to the
The study physiological
Performed on 21 riders
tested on their bikes in a double blind test V02MAX shows that:
* A Maximal Aerobic Power
+ 10% high
* Thresholds high + 12%
* Consumption of O2 lower
than 10% See ITOP study at: osymetric.com
In other words, when
there is a revolution that more muscle fibers working but every fiber
work less intensively.
The study shows
Less muscle activity to
dead including the vastus lateralis which means a transition from
The field studies show:
With the Festina team
Castorama and a gap of 3 seconds per km on the flat and 5 seconds apart
kilometer uphill, where the dead are the most penalized.
See: TT osymetric.com the
Val d'Isere: comparative study with Moreau and Brochard
Finally, a famous
engineering school has studied the last 5 cranksets atypical sensible
improved the pedal:
it shows that OSYMETRIC
is most efficient.
available for sale on Internet