Check out the new Giant_Bicycles Propel that's just been launched after two LeTour stage wins with GreenEDGEteam. It's said to be more aero than before – and lighter and stiffer too cycling
Giant has officially launched its all-new Propel aero road bike range, including the Propel Advanced SL that was ridden by Team BikeExchange-Jayco to two stage victories in the Tour de France, and the new model is said to be significantly more aerodynamically efficient than previously while also being both lighter and stiffer.
Giant has been using this AeroSystem Shaping Technology name for its approach for years. Like other brands, it starts off the design process using CFD software before creating physical forms and moving on to the wind tunnel. “When comparing the complete new Propel Advanced SL bike to the previous generation, the new model improves aerodynamic drag by 6.21 watts; a 2.6% aerodynamic improvement,” says Giant. “This equates to a saving of 27 seconds over 40km at 40km/h.”
It says that its engineers have modified sections of the head tube, down tube and bottom bracket area to produce most of the gains in stiffness. “This new design helps reduce weight, and it also gives the new Propel improved road handling,” says Giant. “Compared to the outgoing Propel Advanced SL, the new model has 85% added rear-end compliance , making it more capable for long, hard days in the saddle, when its road-smoothing properties help minimise fatigue.
Giant’s previous Contact SLR Aero cockpit routed cables above the stem and into the frame behind the steerer tube, hidden out of sight – and away from the wind – by a cover. The finish you see here is called Carbon Smoke, which is a clear coat lacquer with a small amount of paint in it, the idea being to keep the weight as low as possible. All colouring is applied as decals.
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