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Analysis of the Speed of Cyclists Aged from 10 to 15 Years
Valentová, Hana ; Semela, Marek (referee) ; Bradáč, Albert (advisor)
The thesis is concerned with an analysis of speed of bicyclists in age between 10 and 15 years. The thesis examines differences in construction of children's bikes, describes relationship between a child and a bicycle, messures size of children's bikes and characterizes the procedure during an analysis of bike accidents. Internal parts of the thesis are statistical data from accident frequency and summarizing of actual state of understanding of following problems in this age category. The main purpose of this thesis is to make an analysis of speed for individual age categories and make an evaluation of results. This measurement will be completed by a measure of achievable brake deceleration of riders in age between 10 and 15 years. The purpose of this final thesis is an expansion of data for a forensic expertise in area of Traffic.
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Selected Measurements of the Motion of Bicycles - Travelling Around Bends, Transverse Movement
Křenek, Jan ; Krejsa, Ivan (referee) ; Semela, Marek (advisor)
Diploma work named Selected measurements of motion of bicycles starts with history and development of bicycle. There are components of bicycles described and analysis accidents with cyclist. There is a goal organise and realize measurement of ride in the curve and tranverse movement. The outputs are going to be use by experts in sphere of transport accident analysis. There will be exists data analysis then starts maeasurement. After then compile sources from measurement – break testing, ride in the curve testing and tranverse movement on the most frequently road surfaces with part of enaugh cyclist and bycicles. The end of work is already existing data with hold of measurement data comparison.
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Analysis of the Speed of Cyclists Aged from 4 to 10 Years
Skanderová, Valentýna ; Semela, Marek (referee) ; Bradáč, Albert (advisor)
The diploma thesis Cyclists speed analysis at the age bracket of 4 to 10 deals with history and origin of bicycle, description and types of the contruction of bicycles for children at the age bracket mentioned above. The thesis includes the statistics of accidents involving cyclists and regulations providing for the ride on a bicycle on a carriageway. The practical part includes measuring cyclists speed when passing a measured section and the analysis of these data. The analysis of data is processed in terms of gear systems as the equipment. Complementary measuring was made in a slight rising. In the second part of the practical part is measured braking of cyclists at a particular age bracket and the evaluation of their deceleration. The conclusion includes comparison with measuring of other authors made so far.
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Design of city-electric bicycle
Sojka, Vojtěch ; Zdařil, Zdeněk (referee) ; Rubínová, Dana (advisor)
The subject of this diploma thesis is design of electric assisted city bicycle – so called pedelec. The aim was to propose a design that will meet both the requirements of clientwork and the criteria of timeless design with modern materials and technology. The result is a design which, compared to commercially available electric bikes, stands out with much better weight distribution and user comfort.The thesis is soluted by design,technical, ergonomic, psychological and economic terms. Diploma thesis has 84 pages.
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Modification of the crank store on a bicycle
Kupčák, Radim ; Osička, Karel (referee) ; Kalivoda, Milan (advisor)
In its first half this thesis describes most common materials used in the bicycle industry as well as various types and standards of bottom brackets and mentions their pros and cons. Starting with the oldest cotter pin type all the way to the most modern press fit bottom brackets. The major objective of the second part of this thesis is to design a crankset based on the research in the first half. One of the most important aspects of the design was to choose a suitable type of bottom bracket for non-competetive riding. Structural analysis using finite element method was done and the design was altered accordingly. In the end the process of manufacture was described.
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Design of bike holder for trams
Korejz, Jiří ; Rubínová, Dana (referee) ; Haltof, Vladimír (advisor)
The topic of this bachelor thesis is The design of the bicycle holder for the tram. Contracting authority of this project is the Škoda Transportation company, which participate in consultations with the purpose of producing the final product. The thesis deals with the analysis of the current state and the design of the bicycle holder. The aim is to design bicycle holder which will be convenient for placing it to the multipurpose space of the tram.
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Welding of bicycle frame from titanium alloy
Richter, Tomáš ; Kandus, Bohumil (referee) ; Kubíček, Jaroslav (advisor)
This bachelor’s thesis is focused to titanium bicycle frame welding. The first part is about bycicle itself. It containes kinds of bikes, materials used for frames and influency of some proportions to handling properties. Next chapter is about titanium. There are properties of titanium and titanium alloys used for bike frames in this chapter. After that there is a chapter about TIG welding, which is mostly used for titanium. This method is mentioned both generally and concretely for titanium. Final part is about technology of bike frame building.
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Conceptual design of the trailer body
Chalupa, Pavel ; Malášek, Jiří (referee) ; Kubín, Martin (advisor)
This thesis is a conceptual design of the trailer body which is intended to transport sporting goods, especially bicycles, skis and boats. It contains an overview of current transportation options mentioned sporting goods and a conceptual design of the trailer body which will serve to transport all these sporting goods. The body will be placed on trailers currently offered.
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