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Journal of Mechanical Engineering Science and Technology (JMEST)

Abstract

In developing countries, converting traditional underbone motorcycles to electric vehicles transforms sustainable transportation from a theoretical concept to a practical implementation. This paper describes the design and operational performance evaluation of an electric underbone motorcycle conversion system that integrates a 2.0 kW, 72 V BLDC motor and a 72 V, 20 Ah lithium-ion battery pack. Compared to previous studies, this paper combines, for the first time, both dynamometer and road tests as the basis for a comprehensive performance assessment of low-cost motorcycle conversion. The dynamometer test was conducted under laboratory conditions to evaluate the test system for torque, power output, and efficiency, and the road test was conducted on the Cilacap–Purwokerto road segment of 44.26 km to evaluate driving performance, including acceleration, maximum speed, and energy consumption. The test results showed that the converted underbone motorcycle attained a peak torque of 12.4 Nm at 1103 rpm and a maximum power output of 2.91 kW at 3685 rpm, which is significantly lower than the output of typical 110–125 cc gasoline motorcycles, yet is in complete agreement with the expected performance profile for low-power BLDC conversion systems. The road test showed that the motorcycle was able to attain an average speed of 35.4 km/h and an energy consumption of 26–33 Wh/km, which is estimated to provide an operational range of 35–44 km per battery charge.

Publisher

State University of Malang (UM)

First Page

22

Last Page

34

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