SwissStop Catalyst One Disc Rotor - 6 bolt

Catalyst One - One-piece disc rotor with proven Catalyst brake ring

The further developed SwissStop Catalyst One disc rotor ensures powerful braking and high durability. It is available in different sizes and suitable for all applications from road to cyclocross, cross country to downhill. Thanks to rounded outer edges, the rotors are approved by the UCI for road racing (140 and 160mm). 3 small holes per rotor side indicate when the brake disc should be replaced. Compatible with all organic and sintered brake pads. Optimized performance with SwissStop EXOTherm2 and Disc RS.

Highlights of the SwissStop Catalyst brake disc

• 1.95 mm thickness
• Optimal heat dissipation
• Reliable performance from Cyclocross to Downhill
• Long service life, even under the most adverse conditions
• 140 and 160mm UCI approved
• Wear indicators
• Compatible with organic and sintered brake pads
• Can be used with Centerlock hub adapters
• Optimized for SwissStop EXOTherm2 and Disc RS

Research and development of SwissStop Catalyst

In early 2015, the SwissStop engineering team conducted a series of laboratory tests on bicycle brake disc rotors. Next, they created digital models of these rotors and simulated the same test environments using advanced software. A comparison of the data verified that the simulations were accurate and effective, giving the engineers confidence to proceed with creating an array of digital prototypes to thoroughly test and evaluate. 

Heat transfer within the design concepts was studied extensively using engineering simulation software. The relationships between convection, radiation, surface area and weight were used to determine the optimal design to maximize heat dissipation and strength while minimizing weight. The structure of each design was evaluated under braking forces ranging from typical hand pressure up to theoretical maximums. Critical pressure points in the structure were identified in order to maximize the strength and stiffness of the rotor. 

Computational fluid dynamics (CFD) simulations were peformed to study airflow over the surface of the rotor and through the cut-outs. A variety of profiles were tested to determine the effects of asymetrical holes and optimize the cooling effect of airflow over the surfaces. Thermodynamic simulations, structural analysis and fluid dynamic visualizations were conducted in collaboration with the Institute for Energy Technology at HSR University of Applied Science. 

Laboratory testing of the Catalyst disc rotor confirmed the results of the engineering simulations. The Catalyst excels in endurance testing - delivering consistent brake torque over time while standard brake systems gradually decline and eventually suffer structural failure. Further tests demonstrated extremely efficient thermal management, notably shorter stopping distances, very low wear rates and structural integrity under hard braking exceeding the current industry leaders. 

Practical testing of the prototypes allowed the development team to determine the optimum balance between two of the primary, yet competing, characteristics: brake performance and weight. A carefully chosen few extra grams of material added to the outer ring translated directly into shorter stopping distances. Engineers selectively added material to specific sizes to further improve performance and durability.

Scope of delivery: 1 disc rotor