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Ruphus

With the newly designed chainring named „Ruphus“, Kappstein closes a gap and offers besides their proven sprocket also a solution for the crankset. CNC machined out of a 5mm 7075T6 aluminum sheet the chainring is very stiff and light. It has 6 different CNC machined steps which leads to a very interesting and unique look with lots of details to explore. With only 99 grams )

What is Kappstein's “Round-Teeth-Design”?

 

The Kappstein “Round-Teeth-Design” is the evolution of the usual pointed tooth design. Compared to other chainrings, the tooth contour of Kappstein chainrings & sprockets clearly reveals that the teeth are wider and less pointed. The result is more efficient power transmission with an optimal chain fit. Furthermore, this also increases durability, as the chain can be caught and guided by the teeth more easily. The “Round-Teeth-Design” is used for all Kappstein chainrings and sprockets.

 

What does ProLine mean?

“ProLine” refers to a new product line that has been specially developed for competitive sports or for extremely high-performance requirements. All products that are labelled with the add-on “ProLine” have been optimised accordingly. These optimisations include, among other factors, weight, stiffness, durability, functionality, coating or the choice of material. The weight reduction, aerodynamic advantages and improved performance are mainly due to the fact that all ProLine products are designed exclusively for the narrower 11-speed chains (1/2" x 9/128"). We have set new standards in professional cycling equipment with our special coating processes and unique “Round-Teeth-Design” technology (see next article) which is used in the entire ProLine series.

The first product of the series was our Sprocket ProLine, which was developed in preparation for the 2016 Olympic Games in close cooperation with the FES (Institute for Research and Development of Sports Equipment). In the same year the “Elite” track chainring and the design classic “Ruphus ProLine” for the front drive train followed. With the development of track cycling, more and more professional athletes are using Kappstein's ProLine series components, most notably Kristina Vogel and Stefan Bötticher. The 8bar team competes using Kappstein ProLine chainrings and sprockets both on the road and at various critical mass events. The athletes repeatedly emphasise the ProLine drive's extreme smoothness and durability.

We would like to take this opportunity to thank the FES team, which supports us constantly with material and performance tests as well as their comprehensive know-how in the field of competitive sports. Together we are already working on new developments for the next Olympic Games in 2020!

With the newly designed chainring named „Ruphus“, Kappstein closes a gap and offers besides their proven sprocket also a solution for the crankset. CNC machined out of a 5mm 7075T6 aluminum sheet the chainring is very stiff and light. It has 6 different CNC machined steps which leads to a very interesting and unique look with lots of details to explore. With only 99 grams (49T) and a great stiffness this  chainring is a must have for every one values design and performance. Even for our friends on fixed gear bikes this chainring is a pretty good solution to optimize the

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