When the Corum was launched in 1999, it was regarded as a modern steel frame. At the time, the tubes were comparatively voluminous for the material and the frame was very stable by the standards of the time. The fact that it was welded instead of soldered in sockets allowed freedom in the choice of geometry while at the same time saving weight. Today, the model itself is a classic without being outdated. Thanks to the slightly sloping top tube, the silhouette still looks contemporary. A tribute to contemporary taste is the lower headset bearing, which has been removed from the head tube and allows an elegant connection to the remarkably well-sprung carbon fork. Its lateral compliance is largely compensated for by the stiff frame. With Campa's Chorus groupset and Bora high-profile wheels, the test bike weighs an attractive 7.2 kilos. Apart from the higher weight, there is no noticeable difference in riding characteristics compared to modern bikes. The carbon seat post with its unconventional diameter of 29.4 millimetres offers acceptable suspension, while Vittoria tubular tyres roll smoothly.
Price 5,590 Euro
Weight 7.2 kilos
Reference/Info www.passione-bici.de
Weight frame/fork/steering bearing** 1 .873/386/59 gram
Frame sizes*** 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62 cm; made to measure for an extra charge
Seat/steering angle 73°/73,5°
Seat/top tube/head tube 550/565/178 mm plus 9 mm headset cap
Wheelbase/caster 985/51 mm
Stack/Reach/STR**** 581/386 mm/1.51
EQUIPMENT
Steering bearing FSA, 1-1/8 inch
Brakes/gears/bottom bracket Campagnolo Chorus (53/39 t., BSA)
Wheels/tyres Campagnolo Bora One/Vittoria Corsa Evo (tubular tyre)
Handlebar/stem FSA Wing Pro/FSA CSI
Saddle/post Selle Italia SLR/De Rosa (29.4 mm)
*The frame set accounts for 40 per cent and the equipment for 60 per cent of the overall grade. The grades are calculated with all decimal places up to the final grade; however, for the sake of clarity, all grades are given 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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