International Journal of Scientific Research and Engineering Development

This project presents the design and development of a rear wheel subsystem for an electric vehicle (EV) scooter, focusing on power transmission and suspension components. With the increasing demand for sustainable urban mobility, EV scooters are emerging as viable alternatives to traditional two-wheelers due to their low emissions and operational efficiency. However, many current designs suffer from inefficiencies in power delivery and bulky packaging. The methodology involved data collection from ISO standards and technical literature, followed by force analysis and belt drive calculations. CAD modeling was conducted using SolidWorks and Siemens NX, and the prototype was fabricated using materials like AISI 4130 alloy steel and mild steel reinforcements. Key results include achieving a 6.875:1 gear reduction ratio with an estimated 91.3% transmission efficiency, and safe operation under a 180 kg load with satisfactory suspension performance. The final design meets the objectives of compactness, reliability, and manufacturability, making it suitable for both retrofit and production EV platforms.

Murtaza Sandalwala, Rakshit Pandey, Prisha Chakravorty, Vijay Kumar Karma, "Design and Integration of a Compact Single-Stage Timing Belt Transmission Subsystem" International Journal of Scientific Research and Engineering Development, V9(2): Page(170-175) Mar-Apr 2026. ISSN: 2581-7175. www.ijsred.com. Published by Scientific and Academic Research Publishing.