This is not just a carbon frame. Our frames are made from the combination of the best carbon and graphite industrial fibers used in the spacecraft industry. Add handcrafted tube-to-tube connections, Ti-drop outs and modern finishing materials and you will be presented with a state-of-the-art product.
We are proud to be part of the ESA BIC incubator run under the aegis of the European Space Agency. Participation in this business incubator gives us a unique opportunity to tap into a vast scientific knowledge base and opens doors to a network of exclusive partners. This brings remarkable possibilities of growth and development bringing us to totally new horizons of technological advancement.
Creating a beautiful frame is not just about making an accurate seam or knowing how to lay carbon fibres. It needs dexterity of human hands, individualized approach and scrupulous craftsmanship of each involved profession. During the 32 hours it takes to make a Festka frame, it goes through no fewer than 11 pairs of careful hands. We believe this is the only way to create a perfect bicycle frame which will excel in both beauty and functionality.
90° ensures the shape stability of the tube. This layer prevents the deformation of the tube. In technical terms it provides the maximum bending moment in relation to the stability of the wall.
45° angle maintains the tube’s torsional stability and prevents its mechanical damage,
0° maintains the stiffness of the tube in axial bending.
The latter, zero angle, is the most crucial of the three. While most of the carbon composite manufacturers settle for the helical "near zero" angle which in practice means 5-7° degree towards the axis of the tube, the tubes in your bicycle were created with the use of CompoTech's unique know-how allowing to achieve precise 0° axial layer of fiber.
Why does it matter? It has been test-proven that the precise axial zero degree of the filament layer leads to about 15% in stiffness improvement and 40% improvement in strength, maintaining at the same time excellent reliability and durability of the material.
The latest refinements of the technological process enable CompoTech to offer highly customized tubes, which can vary in length, diameter, wall thickness, shape, natural frequency, energy absorption degree, temperature stability, thermal conductivity and other mechanical properties.
Why settle for less, when perfection is already there!
While the tubes manufacture is performed by machines, the actual construction of the frame is entrusted to the careful human hands. With the use of tube-to-tube lamination method, allowing to avoid lugs or unstable glue, we create a perfectly safe and reliable frame which will not fail you under any circumstance. And if a bad crash happens, this ingenious solution ensures frame’s repairability in case of damage.
Titanium is a gem among metallic alloys with unique qualities and stunning surface. We wanted to maximize the qualities of this metal in one of the most vulnerable parts of the frame. Drop-outs take the highest load, and the wear & tear they sustain may cause problems with shifting over time. Our superbly rigid titanium drop-outs are so stable, your rear derailleur servicing bills will be less by half. Wheel removal and replacement has never been easier and faster.
Your Festka’s vibrant colours and exquisite designs are only possible thanks to the synergetic cooperation between the art director and the master painter in the paintshop. To bring the mock-up design to life, we deploy latest technologies in the paint and coating industry managing and overseeing the whole process, constantly evolving and researching new opportunities of finish and colouring.
Carbon tubes are the core building material for every Feska frame. Produced to the high technological standards of the aircraft industry, these tubes bring Festka bicycles into close kinship with modern jets. Every tube is manufactured from one continuous fibre of carbon filament eliminating air bubbles, seams and joined fibers. The CNC automated AFL (axial fibre laying) machine technology ensures unparalleled quality in every tube produced. The capability to work with individual fibres brings nearly unlimited design options and allows us to optimize the tubes to virtually any specifications.
To be able to make most of the high quality building material, one has to know exactly how this material behaves under stress. The quest for this knowledge has inspired us to undertake a complex scientific research project aimed at the frame construction optimization. The project runs in cooperation with one of the leading European innovation hubs at the Department of Mechanics of Czech Technical University.
The project deploys advanced research technologies, such as Digital Image Correlation used for measuring of the flat deformation rate, or Fibre Bragg Grating sensors used to measure deformations inside of the composite structure. Thanks to the great number of sensitive strain gages the research team is able to monitor the behaviour of the material with the precision not achieved previously.
The test results are used as input data for the mathematical modelling where using Final Elements Analysis methodology 3D models of stress allocation over the frame are created. The models are further optimized with the ultimate target to achieve the best balance of comfort. stiffness, reliability and durability of the frame.
Quality check of metal parts is commonplace. However, it is extremely difficult to carry out quality checks of carbon products. Thanks to a unique partnership in the framework of ESA BIC Prague we have access to the advanced method of X-ray scanning which gives us an upper hand in the area of frames quality control.