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Pro bike: Lars Boom's Rabobank Giant TCR Advanced SL

By:
James Huang
Published:
July 14, 2011, 1:19 BST,
Updated:
July 14, 2011, 15:56 BST
Race:
Tour de France
Rabobank's new Giant TCR Advanced SL is lighter and brighter for the 2012 season.

Rabobank's new Giant TCR Advanced SL is lighter and brighter for the 2012 season.

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Giant launched its revamped TCR Advanced SL to the world in late June and not two weeks later did the company unveil the brand-new Rabobank edition at the team presentation in Les Herbiers, France just prior to the start of this year's Tour de France.

While the consumer bike is finished in a rather stark bare clearcoat with dark grey logos, Rabobank's edition is a bit cheerier-looking with a gloss white base and brighter orange and blue graphics as compared to years past. It's still far from over the top but it's almost as if Giant has finally allowed one of the graphic designers to have some more leeway. Either way, it's a decidedly more modern look and one that's easier to pick out of the crowd than before.

Underneath the paint, though, Giant says Rabobank's TCR Advanced SL chassis is the same as the everyday version about to land on showroom floors. The overall appearance and design language are similar to last year's version but there are a number of key differences, the most significant of which is a move to a 1 1/4-to-1 1/2in front end that Giant says provides a whopping 40 percent improvement in "steering stiffness".

While pundits may scoff at the likelihood of such a claim, keep in mind that steerer tube rigidity is a much more substantial issue with increasing frame size – and the Dutch Rabobank squad is chock-full of vertically gifted riders such as Lars Boom, whose bike is profiled here, and team leader Robert Gesink.

In addition to being newly reinforced up front, Giant says the new frames are also lighter by as much as 148g (nearly a third of a pound). Claimed weight is now as low as 820g though Boom's is likely to be a fair bit heavier owing to the large size and thick coat of paint.

Tube shapes have been subtly refined throughout, too, with slightly more rounded forms in many areas, a shallower integrated seatmast base, an even more compact rear triangle, and neatly executed internal cable routing.

Shimano continues on as the team's primary component sponsor and Boom's bike is equipped with a complete Dura-Ace Di2 electronic group. Shimano also provides pedals and a variety of wheels – 50mm-deep carbon tubulars are pictured here – and sister company PRO supplies the cockpit parts.

Interestingly, nearly all of the Rabobank riders have opted for prototype PRO stems and integrated cockpits with the new 1 1/4in steerer clamp size but Boom's machine is fitted with Giant's own Contact forged aluminum stem instead. According to Giant global communications manager Andrew Juskaitis, Boom simply just likes it better though it's also possible that it's due to the Giant stem's somewhat rare 115mm extension length.

Completing Boom's team-issue build is a fi'zi:k Antares saddle, Vittoria tires, and Tacx Tao Carbon cages. Total weight as pictured is 7.11kg (15.67lb).

This article originally appeared on BikeRadar

Full Specifications

Frame: Giant TCR Advanced SL, size L
Fork: Giant TCR Advanced SL w/ OverDrive 2 steerer
Headset: OverDrive 2 integrated by FSA, 1 1/4-to-1 1/2in tapered
Stem: Giant Contact, 115mm x -8°
Handlebars: PRO PLT Anatomic, 42cm (c-c)
Tape/grips: PRO
Front brake: Shimano Dura-Ace BR-7900
Rear brake: Shimano Dura-Ace BR-7900
Brake levers: Shimano Dura-Ace Di2 STI Dual Control ST-7970
Front derailleur: Shimano Dura-Ace Di2 FD-7970
Rear derailleur: Shimano Dura-Ace Di2 RD-7970
Shift levers: Shimano Dura-Ace Di2 STI Dual Control ST-7970
Cassette: Shimano Dura-Ace CS-7900, 11-23T
Chain: Shimano Dura-Ace CN-7900
Crankset: Shimano Dura-Ace FC-7900, 175mm, 53/39T
Bottom bracket: Shimano Dura-Ace press-fit SMI-FC7900
Pedals: Shimano Dura-Ace SPD-SL PD-7810
Wheelset: Shimano Dura-Ace WH-7900-C50-TU
Front tire: Vittoria Corsa Evo CX Team Prototype tubular, 23mm
Rear tire: Vittoria Corsa Evo CX Team Prototype tubular, 23mm
Saddle: fi'zi:k Antares w/ braided carbon rails
Seat post: integrated
Bottle cages: Tacx Tao Carbon (2)
Computer: n/a

 

Critical measurements

Rider's height: 1.91m (6' 3")
Rider's weight: 78kg (172lb)
Saddle height, from BB (c-t): 823mm
Saddle setback (ask mechanic): 78mm
Seat tube length, c-t: ----
Seat tube length, c-c: 485mm
Tip of saddle nose to C of bars (next to stem): 591mm
Saddle-to-bar drop (vertical): 130mm
Head tube length: 185mm
Top tube length: 585mm
Total bicycle weight: 7.11kg (15.67lb)

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Tags:
Tour de France