Giro TT Sees First Use of New Wilier TwinFoil TT Bike by
ZachOverholt - May 9, 2011
Excerpts:“What is different about the TwinFoil?
“Possibly the most visually striking element of the TwinFoil would be the way in which the rear stays attach to the seat tube… The idea behind the wide stays is that the spinning wheel causes turbulence so by moving the stays farther away, the turbulence can be avoided.
“Continuing down from the seat tube, the rear brake is decidedly aero, as like many TT bikes the brake is tucked up and under the chainstays just behind the crankset. The brake itself appears to be a new model from TRP, as it is basically a Mini-V whose arms when at rest add to the aero profile of the frame. From a mechanic’s perspective, the Mini-V Aero is a huge improvement over the current crop of chainstay mounted brakes, as it offers easy access to all adjustment bolts without removing any covers or plates, along with a standard V-Brake release for easy wheel changes.
“… it does offer a unique sort of hump on the top tube which stops just short of the steerer tube.
In order to ensure ease of adjustment and to guarantee the adjustments stay that way, the TwinFoil offers both an integrated seat post clamp, and a 4 bolt dropout adjustment. … the TwinFoil sports a 4 bolt sliding dropout system that looks more similar to a mountain bike than road. However, for anyone who has ever had the experience of an inline adjuster moving around on you, the additional security of the bolt on system will be welcomed.
“Overall, for Team Lampre ISD, the new Wilier TwinFoil was worth a 6th place finish in its first team trial, only 24 seconds down of the leader.
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Giro first look: Wilier Triestina TwinFoil TT bike By Caley Fretz, Published May 8th 2011
“The bike is designed with a wide set fork and rear stays, with the goal of providing maximum clearance between the frame and wheels. Wilier says this minimizes air turbulence and drag caused by the frame’s interaction with spinning wheels.
“…the frame makes good use of TRP’s integrated aero brake, placing it on the chain stays under the bottom bracket to completely hide the rear brake from the wind. The slick integrated seat post binder, and smart brake cable routing through the top tube are a nice touch as well.
“Wilier also uses a sliding vertical dropout, adjustable using four mounting bolts. This allows for a consistent gap between tire and frame, regardless of tire size, as well as consistent positioning of the cassette in relation to the rear derailleur."