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Photo ©:
Wendy Booher/Cyclingnews.com
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Under the influence
By Wendy Booher
Jonnier's Iron Horse Sunday
World Cup
Photo ©: Wendy Booher
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Metal to the pedal
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WTB provides Jonnier
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There's no question
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Rock Shox's new Vivid 5.1
rear shock
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A small piece of foam
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Jonnier runs DT Swiss 440
FR hubs
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The Rock Shox Boxxer
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Starting Thursday, September 6, defending world downhill champion Sabrina
Jonnier will need to figure out the fastest way from the top to the
bottom of the championship course at Fort William, Scotland. Jonnier
will need to outwit, outhandle, and outsprint the competition, which
will Tracy Moseley and Rachel Atherton, both of whom will be racing
in their home country on a course upon which Jonnier has never won.
To win the world title is one thing, but to defend is quite another
- this is something Jonnier knows for a fact. Her training program has
been crafted around the world championships and when the moment arrives
for her to lower her helmet and take her position at the starting gate,
she will throw her leg over her Iron Horse Sunday World Cup and take
command of her hardest race of the season.
Straight from the (Iron) Horse's mouth
Jonnier's chief considerations for her bike are weight and the way
it rides. For the 2007 season, her Sunday dropped nearly a full pound
thanks to an all-new, triple-butted O.P.T. (Optimized Profile Tubing)
6069 tubeset and lighter forged uprights. Otherwise, Iron Horse has
already made sure that the production Sunday is race-ready, so there's
little for Jonnier to be picky about.
"So many factors were in play when developing the Sunday, mainly lots
of little details based on pro rider feedback and personal experience,"
said Todd Seplavy, Iron Horse's marketing director. "The model was designed
from the start to be a World Cup level race bike that consumers could
also purchase."
Keeping the world in suspense
The Sunday's development was a close collaboration between the then-Mad
Catz/Iron Horse team, suspension designer Dave Weagle, and Seplavy.
Weagle's contribution was the now-legendary dw-link suspension system,
which has seen global success and has since been patented and installed
on bikes by several manufacturers like Ibis and Independent Fabrication
(although IF's stunning Tungsten Electrode has yet to see production).
According to Weagle, the dw-link's anti-squat geometry is directly
integrated into the biomechanically tuned linkage design. As such, the
system doesn't require a stable platform shock (or other such lockout-type
crutches) yet delivers a crisp and efficient ride under power with excellent
bump compliance and negligible pedal feedback.
With such devotion specifically to downhill racing, Weagle and Seplavy
constantly explore ways to improve their bikes' performance. What this
means to Jonnier is that they have sweated all the details for her.
"There is not much difference from last year's bike, just a larger
handlebar and a few other small things," she said. Based on this seemingly
casual commentary, Jonnier is either very accepting of Iron Horse's
technology or her Sunday has been designed specifically with her in
mind. Considering the world title - not to mention the French national
and European titles she picked up earlier this year - the latter is
the likely choice.
Members only?
However, the Sunday serves dual purposes: it not only has to help
both Jonnier and her teammate, Sam Hill, defend their world downhill
titles, but also to suit the needs of discerning amateur downhill enthusiasts.
As such, Team frames are usually plucked right out of the production
runs.
Inline with the off-the-shelf readiness of the Sunday frame, Jonnier's
components match most of what's featured on stock machines. For the
French National Championships Jonnier opted for beefy DT Swiss 440 hubs
and Maxxis High Roller rubber, which supposedly offered a sharper edge
to hold corners on the slippery course at Montgenevre. Up front, Jonnier
runs the venerable Rock Shox BoXXer World Cup fork - RockShox's only
platform for downhill riding - which charts its genesis to SRAM's exclusive
BlackBox development program.
Countdown to Worlds
With less than a week to go until the world title gets decided on
Sunday, September 9, preparations are well underway for the showdown.
Team manager Sean Heimdal and mechanic Jacy Shumilack have spent the
last couple of weeks getting all of Jonnier's bike needs dialed in for
the world championship as well as the World Cup finals, which take place
just one week afterwards.
Fresh frames, dialed-in wheels, and perfect tire selection for the
Fort William course will certainly boost Jonnier's pursuit of a consecutive
world title. She's been doing her part, too, by training and working
with the French Cycling Federation, which no doubt desires another victory
from its star gravity racer. Naturally, team sponsor Iron Horse wants
the victory as well, and so far at least, the Sunday World Cup has proven
to be the horse to bet on.
PhotographyFor a thumbnail gallery of these images, click here
Images by
Wendy Booher/Cyclingnews.com
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