TECHNOLOGY + MATERIALS
The Postmount breaking absorption from REACTION GTC and the new Trekking High End frames makes it possible for us to save extra parts. The not needed IS adapter with bolts saves approx. 30 g. This may not seem much, but it shows the potential comprised in the details. With our new Elite Super HPC, the left seat stay is constructed with a larger diameter and is closer to the rear wheel, so that the postmount braking forces are absorbed in a better way.
The requirement for a continuously active and fully usable travel: The rear triangle is not affected by pedalling or especially braking forces. Regardless of the fact that a variety of other possibilities exists, we employ a four pivot chain stay construction. Here, one of the pivots is located between the dropout and the chain stay; this ensures that braking does not have a negative effect on the movement of the rear wheel. Thereby via the appropriate positioning of the remaining pivots, we obtain the finest riding qualities for our fullsuspension bikes in terms of uphill as well as downhill abilities. This fact is also proven by plenty of top test results in leading magazines over the last few years.
The models of our Woman Like Series feature a compact frame geometry with shorter top tubes and longer head tubes. Therefore the riding position is more upright than on the men’s models. This riding position relieves the female pelvis and offers more comfort. The top tubes of the mountain bikes are lowered. This enables female rider a more comfortable way to mount and dismount.
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For high end, we use High Performance 7005Aluminium alloy which has a very low density combined with high strength due to the special alloy and the hardening heat treatment. By triple butting or, as in the STEREO, FRITZZ, REACTION, AGREE and AERIUM models, even quadruple butted tubing (meaning different wall thicknesses in one tube), aluminium tubes are reinforced where required and reduced where possible. In this way, we succeed in getting material where its needed most. In addition we use Special tube shapes, manufactured with Hydroform technology to better cope with the directional forces. The low density and high strength as well as the butting and the Hydroform technology enable us to make high performance frames with an ultimate level of stiffness.
The basis for our carbon frames is High Performance Composite, a combination of various high performance fibres. The fibre consists of multiple filaments, and its tissue is impregnated with a resin matrix to form the carbon tissue from which we build our HPC models The strong fibres are fixed in position and are protected against chemical influence and mechanical damage. The choice, mix and direction of the fibres are determined by the forces expected to act on specific areas of the frame. Our HPC models excel in high absolute stiffness (Nm/°) at low weight and a very good stiffness-to-weight ratio STW (N/ °/kg). For more, see page 102.