|
|
Design of semiactive suspension for mountain terrain bike
Mráz, Kryštof ; Kubík, Michal (referee) ; Strecker, Zbyněk (advisor)
This Bachelor Thesis is focused to design semiactive suspension of mountain bike using MR damper. In research part of thesis is summarised knowledge about passive and semiactive suspension of mountain bikes and about MR dampers. Behaviour of suspended front fork was simulated using virtual dynamic model which was created in graphic environment MATLAB Simulink. Semiactive algorithms Skyhook and modified Groundhook and for comparison also passive settings are simulated. According to results of these simulations is designed semiactive suspension with MR damper which has effect to stabilising contact force of front wheel and therefore increases safety of rider.
|
|
|
Design of mountain-bike crossbar and its FEM analysis
Jelínek, Martin ; Maňas, Pavel (referee) ; Vrbka, Martin (advisor)
The aim of this diploma thesis is the part of evolution of the new bicycle frame for mountain biking, category enduro. The first part of this thesis is focused on creating dimensional modified model of the bike frame in CAD system SolidWorks. Subsequently this frame will be detailed by FEM analysis in software ANSYS Workbench and determine boundary conditions for this analysis. The final part is about visualization of the new bike frame.
|
|
|
Physiological response of a cyclist when using various components of a mountain bike.
Bížová, Michaela ; Brtník, Tomáš (advisor) ; Turčová, Ivana (referee)
Title: Physiological response of the cyclist's organism when using different mountain bike components. Objectives: The goal of this final thesis was to assess the different influence of bicycle components on the physiological response of the cyclists' organism using a systematic research. Methods: The main sources were searched in the scientific databases Taylor and Francis, Researchgate, ScienceDirect. In the included studies, individual researches were searched that were focused on the physiology of the body of the tested cyclists. These were experiments. These investigations investigated the overall performance using different cycling components. From the compared results of all researches, possible moderating factors of the influence of these components on the energy demand during driving were determined. Results:A total of 18 studies were used in this work, focusing on the physiological response of cyclists when using different components of a mountain bike and comparing somatic characteristics, including those of road cycling. Full-suspension mountain bikes provide greater comfort and shock absorption in off-road terrain, resulting in reduced physical exertion and energy demands during riding. Riding a bike with only front suspension was found to be more efficient and faster than using both...
|
|
|
Bicycle suspension test stations
Volánka, Lukáš ; Růžička, Bronislav (referee) ; Mazůrek, Ivan (advisor)
This work deals with the design of a bicycle suspension testing station. Currently, new suspension technologies are still being developed, especially for mountain bikes, which are intended for very rough terrain. For this development of new technologies, it is necessary to have a suitable station that enables experimental verification of driving characteristics, ideally in laboratory conditions. The key features that can be evaluated in a bike are riding comfort and grip. The designed station uses a cylindrical road simulator placed under the tested suspension (wheel). Speed bumps are placed on the cylinder of the simulator, which excite vibrations in the bike when passed over, which simulates driving on a bumpy road. At the station, it is possible to evaluate the properties of the front and rear suspension, while the bicycle is always clamped to the station by the axis of the untested suspension. During the tests, the riders weight is replaced by additional weights placed on a rack that connects the seat and head tube of the bike. The additional weights can be moved to imitate different positions of the cyclist while riding. A virtual dynamic model was created for the test station, which makes the experiments much more efficient. The simulation model was designed and tested in MSC Adams software. The test station together with the virtual model forms a simple tool that enables quick and efficient testing of the quality of bicycle suspension.
|
|
|
Pre-season training analysis of cross-country and maraton mountain bike racers
DOLEŽAL, Vladislav
Cílem této bakalářské práce byla kompletní analýza všech tréninkových procesů během předsezónní přípravy v celém přípravném období cyklistů a následně analýza závodních výsledků v cyklistické sezóně 2019/2020 u závodníků v kategorii junioři, juniorky a muži do 23 let. Hlavním cílem bylo zjištění, který trénink je nejefektivnější pro danou disciplínu cross country a maraton v těchto závodních kategoriích. Zkoumaný soubor tvořilo 6 lidí z Bike klubu Vimperk (závodního týmu Rouvy Specialized Racing). Součástí práce je také historické i novodobé pojetí těchto disciplín, ale i horského kola samotného a také studium odborné literatury a dalších odborných materiálů. Dále následovala syntéza, kdy po vyhodnocení zpracovaného materiálu a dat je výsledkem prohloubení poznatků o tréninku na horských kolech v těchto obou disciplínách a zároveň vytvoření a doporučení ideálního tréninku pro závodníky těchto věkových kategorií.
|
|
|
Analysis of material equipment of elite MTBO competitors
Chaloupská, Barbora ; Brtník, Tomáš (advisor) ; Šafránek, Jiří (referee)
Title: Analysis of material equipment of elite MTBO competitors Objectives: The aim of this work is to analyse the material equipment of elite MTBO competitors. That means mainly mountain bikes and their components. The bachelor thesis describes which material equipment the elite MTBO competitors use and if there are any differences among them. Methods: The questionnaire method was used to obtain data regarding the research objective. The analysis was applied in the description of individual types of bikes and their components, which elite MTBO racers use. Results: The analysis identified the key components of the bikes used by elite MTBO racers. These are a carbon frame, hydraulic brakes and 29 inch wheel sizes that are used by almost all elite MTBO racers. Half of the competitors use full suspension bikes and half use hard-tail bikes with a suspension fork. Differences are in the less important components of the bike, which adapt to personal preferences. Conclusion: The analysis of the results showed the use of the same important components of the bike, but they highlighted personal preferences in less important parts. Nevertheless, the preference of the middle options is clear. Even if these options are represented as advantages and disadvantages. Keywords: MTBO, mountain bike, equipment, competition
|
|
|
History of mountain biking in Vimperk- from 1989 to the present
Pomezný, Lukáš ; Kašpar, Ladislav (advisor) ; Kainová, Lucie (referee)
IN ENGLISH The work deals with the history of mountain bike in Vimpersko from 1989 to the present. Major cycling events, prominent racers, organizers and founders of a mountain bike section in Vimpersko should appear in the work. The main aim of this work is to investigate and record the arrival of a mountain bike in Vimpersko from 1989 to the present. Partial objectives include recording the main characters associated with the emergence of mountain bike races and a section in Vimperk and linking the topic with the history of cycling in the Czech Republic. The main method of work is the historical method enriched with interviews with the main actors of mountaine biking in Vimpersko.
|
|
|
Sport preparation of the rider in the mountain bike downhill
Kolář, Dan ; Bunc, Václav (advisor) ; Brtník, Tomáš (referee)
Title: Preparation of downhill mountain biker Objectives: The aim of this work is to extend the knowledge about downhill mountain biking for wider population. At the same time analyse and finding literature of today, approach downhill from the point of training and consecutive modernisation. Methods: This work was made by method of literature research. There were searched two electronic databases: PubMed and Sportdiscus. The same keywords used to searched in all the databases Results: Based on the very small portion of study of scientific literature, it was found that there is not a concrete method of training for downhill mountain bikers. Most of the drivers are inspired by generally known trainings in other cyclists disciplines. Based on scientific studies, the most important skills in downhill mountain biking are specific bike handling and technic precondition. Conclusion: Aim of this work was to introduce topic of downhill mountain biking for wider population. Introduce history and development of downhill mountain biking, briefly present rules of races, characterise downhill from the point of physiology and present training in downhill mountain biking. In the outcome was found that based on scientific literature, the main determinant of performance is technic precondition but is not the only...
|
|
|
Physiotherapy of professional mountain bike riders
STOŠEK, Martin
This thesis deals with physiotherapy possibilities of professional mountain bike riders. The aim of my bachelor thesis depicts issues of overstretching locomotor system during everyday training and suggest an appropriate physiotherapy plan. Another aim is to describe options of professional bicycle seat position setting offered by several specialized companies. The thesis is divided into two parts. The first theoretical part is dedicated to history of cycling, disciplines, riders categories, sport physiology and bike setting. The qualitative research is used in the second practical part. Research is carried out with three probands. On the basis of characteristics of each proband and input screening, I suggest therapeutic plan and make output screening.
|
|
|
Influence of cycling focus on the performance gains for cyclists on road and mountain biking
Pomezný, Lukáš ; Svobodová, Irena (advisor) ; Dlouhý, Martin (referee)
The bachelor thesis deals with the training that is applied in the course of the concentration and how this training for cyclists on mountain and road cycles influences the subsequent comparison of their results, which is done through functional load diagnostics. It also deals with the history and rules of cycling, a description of cycling races and cycling specific sport training. The work is divided into several parts. The first part deals with the development of road and mountain biking, its history, technical parameters of the bicycle, division of racing disciplines and categories in road and mountain cycling. The second part deals with sports training and sports training components specific to cycling, supercompensation, periodization of sports training and concentration. The third part is research, where the research sample, the course of the tests, the measured values and the results are described. Keywords Cycling, road bike, mountain bike, performance, movement abilities, cyclist
|
guest ::
