Our cyclocross bike Rebel S8 is based on a frame made of 7020T6 aluminium alloy. A frame of very rigid design with specially shaped rear construction that absorbs the bumps of the terrain excellently. Light weight tubing of large diameter are used for the construction of the front triangle. Thanks to its concept, the frame displays great torsional rigidity, which significantly influences the transmission of the rider's force applied to the pedal during acceleration.
During manufacture each semi-finished item is carefully prepared on CNC machines, and after welding the welds are hand ground. After the frame has been repainted, the welds are solid and optically of highly compact. The variability of production makes it possible to modify the Rebel S8 model, both in terms of frame geometry and in technical details and requirements. Thanks to the highly individual approach to the change of geometry and the boom in junior cycling, we can prepare this frame even for young riders from sizes as small as 44 cm.
replaceable hanger for derailleur, seat clamp, rear disc brake is post mount, headset, 1–1/8” FSA ORBIT IS, bottom bracket is BSA (width 68mm)
holes for fixing bottle cage to seat or down tube according to wishes of the customer
wheel diameter is 28", head tube diameter 45 mm (for connecting to front forks), diameter of seat post 27.2 mm, max. tyre width 35 mm.
download the frame geometry table here
|The cable stops are located on the top of the frame top tube so that a competitor can comfortably put his arm through the front triangle and carry the bike when running.
Looking at the connection of the frame top tube and the frame head, you can't help but notice the precision hand grinding of the weld. After the completion of a weld, it is ground by hand, which eliminates the weld's surface tension and gives a highly compact appearance. A conventional bead weld typical for robotic welding is not used in the case of Duratec frames - the tubes are welded together by high-quality penetration welding, which gives a very elegant join of great strength.
|Disc brake mount||The rear disc brake is fixed to the frame using post mount system, and in the standard version the frame is prepared for rear disc of diameter 140 mm. The actual frame dropouts are made on a CNC milling centre. The advantage of this machining is that great precision of the milled components is achieved. This technology also ensures a very high-quality surface of the milled parts, a very clean cut and a very pure high-tech designer look.|
The front derailleur is clamped in place. Depending on the choice of cranks and corresponding front derailleur, we prepare a cable stop weld-on for top running of the cable to the derailleur and/or a weld-on with pulley for bottom-pull derailing. You can find more components and possibilities of configurations on the page Configuration.
The detail displays Shimano Ultegra cranks, 50-34 tooth cranksets.
|Detail of crankset|
|Disc brake mount||The front brake is attached using the Int. Standard system. Diameter of front disc 160 mm. Forks are full carbon with post diameter 1-1/8". Fork manufacturers are highly flexible, and the market now offers forks with conical post 1-1/8"-1-1/2". As manufacturers we can also supply and adapt the frame head to this requirement if requested.|