Brief Description & Functionality A folding stair climbing trolley and hand truck is a mechanical device designed for safe and efficient transport of heavy goods over stairs and uneven terrain. The key feature of this device is the Tri-Star wheel mechanism, which allows the trolley to “walk” over steps. It

Brief Description & Functionality 1. Introduction: With the increasing challenges of urban congestion, pollution, and fuel costs, electric bicycles are gaining prominence as a sustainable mode of transport. This project aims to design and fabricate an innovative, ergonomic, and eco-friendly electric bicycle that is both cost-effective and user-friendly. 2. Problem