Design And Development Of An Automatic Bicycle

Azman, Mat Sari (2011) Design And Development Of An Automatic Bicycle. Project Report. UTeM, Melaka Malaysia. (Submitted)

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Abstract

Bicycle is the most uses transportation that became most preferred transportation in the world. The bicycles are used for many things such as recreational activities, adult fitness and many more. The purpose of the PSM project is to design and develop an automatic gear transmission for the future bicycle. In this project, the new design will be generated by using CAD software and several experiments about the gear ratio and torque will be conducted. Several literature studies about the bicycle will help on during the design development phase. In design development phase, three conceptual designs were generated and concept II is selected as the best concept by using concept scoring method. Two experiments have been conducted during this project. First experiment is to find gear ratio and gear shift sequence. In experiment 1, F1R5 gear combination is the lowest speeds gear and F2R1 is the highest speed gear. Second experiment was conducted to find the torque and pedal force require for the bicycle based on the speed. The result show the F1R5 gear combination require the lowest torque and pedal force based on speed and F2R1 gear combination require the higher torque and pedal force based on speed. For the conclusion, a new shifter for automatic gear transmission has been design and all project objectives have been achieved successfully.

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