The short head tube allows a stretched position, high rigidity guarantees the best power transmission and riding stability. Corratec took a middle course when it came to aerodynamic tuning. The voluminous down tube was given an aero profile, while the seat tube and seat post remained round. The bike performed well in the wind tunnel, but the aero potential is almost exhausted with the own-brand wheels. Although the carbon seat post offers good suspension, the bike felt rather harsh during the test ride - a result of the relatively narrow 23 mm tyres. The direct mount brakes positioned behind the bottom bracket create a slight discord: when sprinting and pedalling, the pads touch the rim. This could be remedied by a laterally stiffer rear wheel.
CONCLUSION Extremely stable, race-orientated riding position, second-best aerodynamics in the test. Rear brake can drag when pedalling out of the saddle
OVERALL GRADE 1.8
Price 6,999 Euro
Weight 7.0 kilos
Info www.corratec.com
available in specialised shops
Weight frame/fork/steering bearing* 939/462/87 grammes
Frame sizes** XS, S, M, L, XL, XXL
Seat/top/head tube 520/550/145 mm
Stack/Reach/STR*** 551/386 mm/1.43
Drive Shimano Dura-Ace (52/36 t, press-fit)
Brakes/gears Shimano Dura-Ace, rear Direct Mount/Dura-Ace
Wheels/tyres/weights**** Zzyzx Carbon/Continental Grand Prix 4000S2 23C (v/h: 1,095/1,464 grams)
*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 a very upright riding position.
****Wheel weights including tyres, cassette, quick release/threaded axles and brake discs if applicable.
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