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Desing of the carbon cap for the bike's fork
Gallo, Dominik ; Čípek, Pavel (referee) ; Košťál, David (advisor)
This bachelor's thesis discusses problems and solutions of design of the carbon crown for the bike's fork. It shows an overview of the possible implementation of the initial design up to final part. The output will be the crown made of carbon composite by mould pressing. For manufacturing the prototype form will be used 3D printing – Fused Deposition Modeling.
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Favorit Brno / cycling stadium - bicross track / architectural study - design / stage 2021/22
Nováková, Lucie ; Žalmanová, Petra (referee) ; Šindlar, Jiljí (advisor)
The assignment of the diploma thesis is an architectural study of a cycling stadium - velodrome in the Pisárky district in Brno for TJ Favorit Brno. The existing velodrome is located southwest on the edge of the Brno Exhibition Center on Křížovského Street. The Velodrome no longer meets the current requirements of track cycling, but it is historically valuable and has its genius loci. The new 250 m long wooden bike track (together with other parameters of the International Cycling Union) and its associated sports grounds are "inserted" into the existing velodrome, which is modified and reconstructed according to requirements. The grandstands have been preserved. The built-in building with a new track is then completely roofed, creating an enclosed space. As part of the stadium reconstruction, a new facility was also created for TJ Favorit Brno from a modular container system; These are changing rooms for athletes, administrative areas, and facilities for visiting clubs and athletes and IP areas. The container construction system for sports facilities is very practical, economical, fast, environmentally friendly, variable, and flexible to the current requirements of a constantly evolving sport. The Anteroom and ground floor in the southern part of the existing velodrome is equipped with services for the public: a cafe, souvenir shop, cash register, information center, service, and a bicycle and sports equipment store. The new track with grandstands is covered with ETFE foil anchored to new lattice trusses, which are connected to the existing roof.
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Equipment for testing the front forks of motorcycles and e-bikes
Vaněk, Tomáš ; Jeniš, Filip (referee) ; Mazůrek, Ivan (advisor)
One of the most important parts of motorcycle and bicycle chassis is the telescopic fork. Its proper function is tested on pulsators. The manufacturers of the test pulsators clamp the suspension under test vertically and the load force is applied in the direction of the fork axis. However, the direction of the force changes when actually crossing bumps of different sizes. For this reason, an add-on device to the pulsator has been developed to simulate the real load waveform. In addition to suitable kinematics changing the direction of the force applied to the suspension, the movement of the end of the suspension must also be simulated. The designed device has the highest accuracy in simulating the forces at steering angle values between 20° and 30°. The attachment system to the pulsator frame is also an integral part, allowing a large number of suspensions with different dimensions to be clamped. Strength calculations have been carried out for the individual parts of the device with a maximum applied force of 3 kN. In order to further improve the loading kinematics, it is advisable to carry out tests of the wheel crossing over unevenness in reality and to adjust the device according to the results.
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Production of bicycle pedals with FDM 3D printer
Kříž, Martin ; Sliwková, Petra (referee) ; Zemčík, Oskar (advisor)
This bachelor’s thesis deals with design and production of bicycle platform pedals using Fused Deposition Modeling. The thesis begins with overview of FDM method, its principle, applications and common used materials. The paper continues with analysis of design requirements and stress behavior of pedal body under various riding conditions. In the next section are presented three designs of pedal body, created according to design requirements and manufacturing method. Individual designs are evaluated using computer stress analysis.The main part of the thesis describes production of the first prototype from its initial design to the manufacturing process and final testing. Thesis follows with production of redesigned version of pedals based on collected data and concludes with proccess and economic evaluation
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Safety Equipment for Motorcyclists
Všianský, Michal ; Svítil, Petr (referee) ; Zdařil, Zdeněk (advisor)
In my thesis I looked for a solution to simplify the transfer and storage of motorcycle helmet. This is the helmet for smaller motorcycles for city traffic, where isn ´t often the sufficient space for helmet storage after the motorcycle is left. I choose this topic because the motorcycles are one of my main hobbies and I know how unpleasant is to move in the city, school or work always with the helmet in your hand because you cannot put it into your backpack or to the standard personal cabinets at school cloakrooms or in the factories. The helmet which I made will reduce its volume by folding approximately about 40% and it makes easier the transfer and enables putting into the storage space, cabinet or hand luggage /backpack, bag/ - as I know acc. to my experience the bikers carry with them. The skeleton and the helmet cushioning is divided into four parts /upper, two side and back/ which enable the folding. The cushioning of the side parts will fill the inside space of the upper part by simple folding, then the side skeleton will be inserted to the upper two-case part and in the last – back part, fixed to the rest of the helmet by the hinges, will fold into the helmet – it covers the above mentioned cushioning of the sides and so it protects its damage. The whole will be fixed by the tightening bend which is also used for helmet fixing on the head. In the dismanted status is everything saved by the locks which connect the back and side parts. The helmet skeleton was made of kevlar which compensates the added weight and also keeps the sufficient solidness. Because of double case enabling the saving of the side parts, the solidity and also the safeness are bitter then by using of normal helmet. The helmet shape is created in easy concept and aerodynamic shape. All details, blending and surface extrudation have the reason. In the bottom is the material enlarged because of locks , in the middle part the enlargement is used for breaking of hanging sides and the cleats on the outside enable the cooling and head airing. For the thesis presentation I make the model 1:1 which cannot be fold up. The skeleton is made with the help of 3D printing and after that colour treated. The cushioning milled on CNC machine of extrude polystyren will be refilled by soft foam and covered by the cloth. The shield protecting eyes will be vacuumed of colourless plastic.
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Favorit Brno / cycling stadium - bicross track / architectural study - design / stage 2021/22
Nováková, Lucie ; Žalmanová, Petra (referee) ; Šindlar, Jiljí (advisor)
The assignment of the diploma thesis is an architectural study of a cycling stadium - velodrome in the Pisárky district in Brno for TJ Favorit Brno. The existing velodrome is located southwest on the edge of the Brno Exhibition Center on Křížovského Street. The Velodrome no longer meets the current requirements of track cycling, but it is historically valuable and has its genius loci. The new 250 m long wooden bike track (together with other parameters of the International Cycling Union) and its associated sports grounds are "inserted" into the existing velodrome, which is modified and reconstructed according to requirements. The grandstands have been preserved. The built-in building with a new track is then completely roofed, creating an enclosed space. As part of the stadium reconstruction, a new facility was also created for TJ Favorit Brno from a modular container system; These are changing rooms for athletes, administrative areas, and facilities for visiting clubs and athletes and IP areas. The container construction system for sports facilities is very practical, economical, fast, environmentally friendly, variable, and flexible to the current requirements of a constantly evolving sport. The Anteroom and ground floor in the southern part of the existing velodrome is equipped with services for the public: a cafe, souvenir shop, cash register, information center, service, and a bicycle and sports equipment store. The new track with grandstands is covered with ETFE foil anchored to new lattice trusses, which are connected to the existing roof.
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Equipment for testing the front forks of motorcycles and e-bikes
Vaněk, Tomáš ; Jeniš, Filip (referee) ; Mazůrek, Ivan (advisor)
One of the most important parts of motorcycle and bicycle chassis is the telescopic fork. Its proper function is tested on pulsators. The manufacturers of the test pulsators clamp the suspension under test vertically and the load force is applied in the direction of the fork axis. However, the direction of the force changes when actually crossing bumps of different sizes. For this reason, an add-on device to the pulsator has been developed to simulate the real load waveform. In addition to suitable kinematics changing the direction of the force applied to the suspension, the movement of the end of the suspension must also be simulated. The designed device has the highest accuracy in simulating the forces at steering angle values between 20° and 30°. The attachment system to the pulsator frame is also an integral part, allowing a large number of suspensions with different dimensions to be clamped. Strength calculations have been carried out for the individual parts of the device with a maximum applied force of 3 kN. In order to further improve the loading kinematics, it is advisable to carry out tests of the wheel crossing over unevenness in reality and to adjust the device according to the results.
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Freestyle BMX in the Czech Republic
Jalůvková, Kateřina ; Jindra, Matouš (advisor) ; Brtník, Tomáš (referee)
Title: Freestyle BMX in the Czech Republic Objectives: The aim of this thesis is to create a comprehensive work mapping the current situation of Czech freestyle BMX scene and covering selected sections. Methods: In the descriptive-analytical part of the thesis generally theoretical scientific methods are used. Practical part of the thesis was added to supplement information sources. It consists of survey, which belongs to quantitative research and three semi-structured interviews, whose character was qualitative. Results: The result of this thesis is a complete overview of the current Czech freestyle BMX scene. It was managed to include organization, bike parks, events, education, market, successful riders and even the women category is not missing. Three interviews and a survey contributed to a comprehensive view of the situation. The result of the survey is that there are only a few women in this sport, but they have a strong support in the community. Keywords: bike, cycling, extreme sports, Olympic games, skatepark, education, category women, competition
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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
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Production of bicycle pedals with FDM 3D printer
Kříž, Martin ; Sliwková, Petra (referee) ; Zemčík, Oskar (advisor)
This bachelor’s thesis deals with design and production of bicycle platform pedals using Fused Deposition Modeling. The thesis begins with overview of FDM method, its principle, applications and common used materials. The paper continues with analysis of design requirements and stress behavior of pedal body under various riding conditions. In the next section are presented three designs of pedal body, created according to design requirements and manufacturing method. Individual designs are evaluated using computer stress analysis.The main part of the thesis describes production of the first prototype from its initial design to the manufacturing process and final testing. Thesis follows with production of redesigned version of pedals based on collected data and concludes with proccess and economic evaluation
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