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Boardman Bikes Elite 9.8 AiR TT

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Item # BMB0005

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Item # BMB0005

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Description

Sheer speed.

Aside from claiming the Individual Pursuit gold medal in the '92 Games, Chris Boardman was also one of the best time trial specialists in the business during his racing career. Nicknamed "Mr. Prologue" by his racing peers, the British cyclist made a name for himself by specializing in racing against the clock. This was famously solidified in cycling history with his win at the prologue of the '94 Tour, where he executed the fastest time ever recorded. So, it's safe to say that Boardman knows a thing or two when it comes to bicycle aerodynamics. His new Elite 9.8 Air TT stands on the highest rung of the TT collection's ladder, as its function-driven tube shapes create an exceptionally light, stable, and aerodynamic time trial machine.

Similar to the AiR 9.8, every tube on the AiR TT was meticulously examined and tested to be as efficient, lightweight, and aerodynamic as possible. Using the latest Computational Fluid Dynamics (CFD) and wind tunnel tests, Boardman was able to experiment with many different combinations of fiber types, fiber directions, resins, and tube shapes to ultimately come up with the TT frame design in relation to airflow. Boardman carefully designed the AiR TT's tubes with shapes that not only efficiently handle head-on winds, but also those less-than-ideal crosswinds encountered in racing situations. These wind-tunnel-tested tubes wear a fairly slender width profile throughout, which creates the optimal balance between vertical compliance and aerodynamics. The top tube remains fairly round, while the down tube, seat tube, and integrated, and reversible, seatpost have been shaped to maximize airflow and to reduce wind-resistance.

The material selected for the AiR TT's frame is an ultralight, high modulus, and unidirectional carbon fiber, constructed with a full monocoque design. Similarly, the fork was built out of the same predictable, race-tested ultralight carbon fiber. The AiR's mold also incorporates a one-piece BB30 bottom bracket and oversized box section chainstays, which, with a steep taper design at the dropouts, maximizes power transfer and strength at the rear junction. Along these lines, the full carbon fork was built with a 1-1/2 to 1-1/8in tapered steerer for increased stiffness and steering precision.

The AiR Elite TT's fork was also designed to be exceptionally stable, comfortable, and to efficiently handle variable wind conditions. Boardman factored in that both the proximity and spinning of the wheel affect the fork's ability to reduce wind-resistance, which is why its blades were computer modeled to manage that challenging local flow condition. Because of this, Boardman flattened the insides of the blades and curved the outside surfaces for an enhanced airflow interaction between the fork and wheel. This same principle is also true for the seatstays, which is why they feature a similar profile.

For the brake placement, Boardman neatly tucked the front caliper up inside the back of the fork, which still makes it accessible for maintenance and adjustments. The rear brake system is similarly tucked behind the bottom bracket, keeping it hidden and out of the way. Along these lines, the frame was built with full internal cable routing, furthering airflow enhancement and a clean overall appearance.

The Boardman Bikes Elite 9.8 Air TT is available in four sizes from X-Small to Large and in the color Matte Black.

Tech Specs

Frame Material:
monocoque carbon fiber
Fork:
Boardman Bikes
Fork Material:
unidirectional carbon fiber
Fork Blade Shape:
aero blade
Steer Tube Type:
tapered carbon fiber
Dropout Type:
vertical
Replaceable Rear Derailleur Hanger:
yes
Head Tube Diameter:
1-1/2 to 1-1/8in tapered
Headset Included:
yes, FSA Semi-Integrated
Bottom Bracket Type:
BB30
Front Derailleur Mount:
braze-on
Seatpost Diameter:
proprietary
Cable Routing:
internal
Compatible Components:
mechanical shift systems
Claimed Weight:
1250 g
Extras:
proprietary brake calipers
Recommended Use:
time trial and triathlon racing
Manufacturer Warranty:
2 years on frame

Geometry chart

Boardman Bikes

Geometry Chart

 

Elite 9.8 AiR TT
 

Seat Tube

(c-t)

Effective Top Tube

(eTT)

Head Tube

(HT)

Head Tube Angle

(HTo)

Seat Tube Angle

(STo)

Bottom Bracket Drop

(BBD)

Chainstay

(CS)

XS 49.0cm 51.0cm 8.0cm 72.0o 76.0o/79.0o 7.0cm 40.0cm
S 49.0cm 53.0cm 8.0cm 72.5o 76.0o/79.0o 7.0cm 40.0cm
M 51.0cm 55.5cm 10.0cm 73.0o 76.0o/79.0o 7.0cm 40.0cm
L 53.0cm 57.0cm 12.0cm 73.0o 76.0o/79.0o 7.0cm 40.0cm

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