Development of emergency brake for underbone motorcycle (below 150CC engine capacity)

Abdul Rahim, Muhammad Nazreen (2022) Development of emergency brake for underbone motorcycle (below 150CC engine capacity). Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

The purpose of this project is to develop an emergency brake system for underbone motorcycles (engine capacity less than 150cc) by combining the front and rear brake systems. This combination brake system is broadly applied on motorcycles with large engines. This combination brake system is only applicable to motorcycles with a capacity of less than 150cc. This concept may be one of the safest brake systems available, reducing stopping distance compared to conventional brakes. This brake system is incredibly simple to install on any underbone motorcycle. Thus, two different callipers are employed in this project: the front calliper is a double calliper, while the rear calliper is a single calliper. This ensures that the brake distribution on the front calliper is greater than the rear calliper, preventing skidding. This combination brake system utilises both brake discs to improve braking performance. For the rear brake system only, a double calliper is added to the rear brake disc to serve as a backup brake in the event that the combined brake system fails. To determine the percentage difference in stopping distance, the motorcycle had to perform three different test with differents speeds and repeated the procedure three times to ensure the data was accurate. The stopping distance can be determined by placing a cone (marking for brake applied). The distance between the cone and the last motorcycle that can stop is measured. The results demonstrate the difference between conventional and combined brake systems that are combined brake system can reduce 30% in average of stopping distance for every test performed.

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