Spokes from Biel, produced by machines from Aachen
Admittedly, some local patriotism got the better of us. We noticed that the fully automated machines, which produce the 131 different types of spokes that DT Swiss has to offer, originate from Aachen. It all starts with the automatic alignment of the raw material, which is 5 km of wire wound around a roll. Next, the shaping of the spoke head and thread, and also the typical DT Swiss blading appear to happen in one go. This happens for all spoke types – straightpull or J-bend –and every spoke length. For butted, in other words, spokes which are thinner towards the middle, the wire is compacted in a cold forging process. The cold forging process results in a hardening of the material without weakening the structure, while also maintaining the elasticity of the steel. The flat-forged Aero spokes by DT Swiss go through an additional cold forging step: They are brought to their final, flat and thus more aerodynamically efficient blade shape with the help of 250 tonnes of pressure.