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DT Swiss is one of the leading manufacturers of wheels and rims. This success is not a coincidence. Painstaking and meticulous development, a lot of know-how from years of experience and an all-consuming passion for cycling come together to create perfectly harmonising products. These will deliver reliable performance at the highest level. Due to the innovative capacity, the wheels manufacturing specialist from Biel is known for its benchmark setting products. The result of which is tangible in their premium high-tech components for MTB, road bikes, gravelbikes and E-mountain bikes.

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More about DT Swiss

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DT Swiss – From Chain Mail to Wheels
Once upon a time there was a company that processed steel. The steel was made into wires and also used for chain mail. Three employees from this company, the "Vereinigte Drahtwerke" in Biel, Switzerland, decided in the early 1990s to apply their knowledge from manufacturing wire products in a different way, as they shared a love of riding bicycles. For once, they didn't forge steel, but rather plans: they bought part of Vereinigte Drahtwerke and founded the company DT Swiss in 1994. From then on, they produced spokes for bikes, and lived as happy cyclists with their own company on the shores of Lake Biel at the foot of the Swiss Jura mountains...
The DT Swiss home base and headquarters in Biel, at the foot of the Jura Mountain.

From a cyclist’s point of view, it is fortunate that this story is not a fairy tale, but reality. How else would we be able to experience the joy of riding DT Swiss wheels? Or feel the performance of a DT Swiss suspension? We also would not have such a vast selection of spokes for the different load requirements of the various cycling disciplines. And because we wanted to know whether bicycle spokes can also be used to replace cheese fondue forks, we decided to visit DT Swiss at their headquarters in Biel. A quarter of DT Swiss's 800 employees worldwide work there. In addition to the management, including the marketing and sales departments, the entire product development, spoke production facilities and the so-called Biel Performance Manufacturing, or BPM for short, are located at the home base.

The entrance at DT Swiss

BPM: Not beats per minute, but best performance manufacturing expertise for wheels

The BPM is a scaled down production for wheels, mimicking the processes used at the company’s own main production facilities in Poland and in Taichung, Taiwan. At the BPM, DT Swiss develops the entire production process of the wheels in a small team of experts – and the know-how gathered here is used to train the employees at the production facilities. This sounds quite industrial and explains, at least in parts, the high quality of DT Swiss wheels – but a closer look reveals that beneath this exterior lies a deep-rooted passion for cycling: The leader of the BPM team, Marcel Waldmann, has been taking part in downhill MTB races for the last 29 years and evidently is an expert for wheels. He is a multiple Masters Downhill World Champion and has only wrecked five wheels in his entire career! What an unbelievable statistic! We saved ourselves the embarrassment of asking what his wheel brand of choice is...

The wheel luminary at DT Swiss – and multiple Downhill World Champion in the Masters Class: Marcel Waldmann.

The wheel luminary at DT Swiss – and multiple Downhill World Champion in the Masters Class: Marcel Waldmann.

The BPM is, so to speak, the development centre for the construction of wheels. The most important recruitment criterion: a knack for truing wheels.

The BPM is, so to speak, the development centre for the construction of wheels. The most important recruitment criterion: a knack for truing wheels.

The most famous wheel in the history of downhill racing. Driven by Aaron Gwin at the World Cup in Leogang in the year of 2014. Without tyres. The rest is a legend – and explains the look of disbelief!

The most famous wheel in the history of downhill racing. Driven by Aaron Gwin at the World Cup in Leogang in the year of 2014. Without tyres. The rest is a legend – and explains the look of disbelief!

Speech is silver, spokes are black...

Until 1994 only silver spokes existed, apart from a few painted exceptions. But then DT Swiss developed the so called “blackening” process, during which a chemical treatment colours the spokes black permanently. It goes without saying that no weight is added. This marked the first in-house development by the young company. Nowadays, roughly half of all spokes produced by DT Swiss leave production in the conventional silver of the raw material (18/10 stainless steel). The other half is blackened using the chemical process mentioned above or individually painted.

The dipping baths, on the left of the picture, contain the liquids used for colouring the spokes in black – also called blackening. Two fully automated robots take care of this.

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.

Cutting, shaping the head and thread, embossing with the DT Swiss logo – all this happens in a fully automated machine as shown above.

Cutting, shaping the head and thread, embossing with the DT Swiss logo – all this happens in a fully automated machine as shown above.

Regardless of the machine, at DT Swiss, quality control is a human’s job! It is carried out permanently during production.

Regardless of the machine, at DT Swiss, quality control is a human’s job! It is carried out permanently during production.

Destruction in the name of development

Generally speaking, the heart of a bike components lover bleeds at the sight of a testing laboratory, such as the one run by DT Swiss. But the wanton destruction of many components which takes place at these facilities, on which test engineer Philipp Lüdi keeps a close eye with his team of four, has a purpose: test the prototypes of high-end, precise and strong bicycle components. DT Swiss does not send a single wheel into production if it does not pass this internal test cycle, which is permanently optimised. This provides the testing standard for the development of newer, even better products. During this process the engineers go far beyond the usual testing standards: DT Swiss uses a pressure of 22 to 25 bar, for the pressure tests of rims. The ISO standard is only a fraction of these values and is considered to be questionable internally at DT Swiss...

Philipp is the leading test engineer and the supervisor of various test benches. His job is to break things, until they break no longer.

Philipp is the leading test engineer and the supervisor of various test benches. His job is to break things, until they break no longer.

The roller test benches simulate continuous wheel load and thus show the upper load limit. With increased or decreased unevenness depending on the roller surface – for road, gravel, XC or downhill

The roller test benches simulate continuous wheel load and thus show the upper load limit. With increased or decreased unevenness depending on the roller surface – for road, gravel, XC or downhill

Damages are documented appropriately and sent to the development department. Not a single wheel is produced in series if it does not pass the internal test cycle.

Damages are documented appropriately and sent to the development department. Not a single wheel is produced in series if it does not pass the internal test cycle.

Passing the culinary test

By the way, – to all the Swiss out there – we managed to experience the culinary delights of a hearty Swiss cheese fondue. And yes, it works! It is indeed possible to skewer a piece of bread on a spoke and guide it through the cheese following a figure of eight. The classic J-bend spokes provide an advantage in this scenario though their small barb from the bent spoke head, compared to the straightpull spokes. Otherwise, the shape – butted or not and bladed or round – is clearly a matter of taste. Just like choosing your wheels.

Spokes are also suitable as fondue forks. Nils’s expert advice: J-bend is superior to straightpull. And there is no need for a bladed spoke, the cheese is liquid
Expert advice No. 2: Before using them as a fork, quickly clean the spokes. After they leave the machine.

Expert advice No. 2: Before using them as a fork, quickly clean the spokes. After they leave the machine.

A small selection from the DT Swiss spokes range.

A small selection from the DT Swiss spokes range.

The raw materials for...

The raw materials for...

...the serrated freewheel. Ratchet, not raclette!

...the serrated freewheel. Ratchet, not raclette!

A look into the past of bicycle wheels...

A look into the past of bicycle wheels...

...and hubs.

...and hubs.

Of course, we went cycling too.

Of course, we went cycling too.

Guide Remo is as fast as greased lightning and brilliantly diverse in his everyday life...

Guide Remo is as fast as greased lightning and brilliantly diverse in his everyday life...

...being the product manager and head of the workshop at DT Swiss, a test rider with a lot of enduro racing experience, the guardian of the test bikes and a race mechanic.

...being the product manager and head of the workshop at DT Swiss, a test rider with a lot of enduro racing experience, the guardian of the test bikes and a race mechanic.

Apart from the trails on the Jura ridge...

Apart from the trails on the Jura ridge...

...the view from the Jura Mountain onto the Bernese Oberland (Highlands) was also remarkable.

...the view from the Jura Mountain onto the Bernese Oberland (Highlands) was also remarkable.