The emphatically understated Helium SL is something of a counter-design to the extroverted Noah. As a typical representative of the current lightweight generation, the frame has a voluminous down tube that is extremely wide at the bottom bracket and pencil-thin seat stays. This design has advantages for the measurements in the TOUR laboratory. Consistently convincing measurement values give the frame a very good result, although sprinters like André Greipel might wish for a little more stiffness in the head tube and bottom bracket. However, like other lightweight frames, the Helium struggles in the wind tunnel. Here it generates the second-highest air resistance after Merida's Scultura. Due to its low weight, however, it can make up a few places on the simulated test track.
Price 9,165.75 euros
Weight 6.8 kilos
Reference/Info www.ridley-bikes.com
Weight frame/fork/steering bearing** 814/357/67 grammes
Frame sizes*** XS, S, M, L, XL
Seat/steering angle 73°/74,5°
Seat/top tube/head tube 545/565/175 mm plus 12 mm headset cap
Wheelbase/caster 985/45 mm
Stack/Reach/STR**** 574/391 mm/1.47
EQUIPMENT
Steering bearing top 1-1/8, bottom 1-1/4 inch
Brakes/gears/bottom bracket Shimano Dura-Ace Di2 9070 (50/34 t, PF-BB30)
Wheels/tyres Fulcrum Red Wind 50/ Continental Grand Prix 4000S 23C
Handlebar/stem 4ZA/4ZA
Saddle/post 4ZA/4ZA (27.2 mm)
*The grades are calculated up to the final grade with all decimal places; for a better overview, however, we indicate all grades with rounded decimal places.
**Weighed weights.
***Manufacturer's specification, test size bold.
****Stack/Reach projected vertical/horizontal measurement from the centre of the bottom bracket to the top of the head tube; STR (Stack to Reach): 1.36 means a very stretched, 1.60 an upright riding position.
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