Competition
2025-2026

e-Human Powered Vehicle Competition

e-Human Powered Vehicle Competition

Summary

Background

The American Society of Mechanical Engineers (ASME) hosts a competition called the e-Human Powered Vehicle Challenge (e-HPVC), where teams of students compete to design and fabricate human powered vehicles. 

While the term Human Powered Vehicle (HPV) refers to any means of transportation that is powered by human muscles, ASME is actually referring to a subclass of performance vehicles that include semi-recumbent bicycles or tricycles. These vehicles are designed to be fast, safe and ergonomic. They are equipped with performance drivetrains, aerodynamic fairings and rollover-protection systems to meet these certain attributes. The e- at the front is there to represent that these vehicles also have electric motors in them. However, they are limited in power, so that the overall vehicle is still mostly human powered.  

The purpose of this competition is to give growing engineers a chance to explore more environmentally minded methods of transportation, and help give them experience with design and fabrication at the same time. Most people in the U.S. get around using cars, which are very expensive and environmentally detrimental. The HPVC and e-HPVC hope to introduce an alternative method of transportation that is cheaper and less detrimental to the environment. 

Team Members

Statics: Isaac An, Jake Gannon, Joseph Gutierrez, Aaron Joshi, Emily Manookian, Ocean Mou, Jessica Nguyen, Dilen Panchel, Pratham Patel

Dynamics: Jordan Chan, Seb Grigore, Dillon Kwak, Trey Lakin, Travis Le, Victoria Liu, Zubair Notta, Vilca Quezada, Gavin Rose, Meera Sambhwani

Electrical: Allison Chen, Justin Lo, Roshan Malik, Amanda McKay

Operations: Kirin Huang, Joseph Huynh, Eric Sun, Rina Taing

Current Work / Recent Updates

Goals and Objectives

The main goal of the project is to design, fabricate, assemble, and test a human-powered vehicle to compete in an endurance race—improving upon last year's tricycle design. The vehicle needs to be able to maneuver around rough terrain, and also has to meet certain safety requirements, such as having a rollover protection system to protect a rider in case of the vehicle flipping over. We hope to design a vehicle that meets these requirements while also being comfortable to ride by using an adjustable telescoping boom and chain tensioner system, adding front suspension, and integrating onboard telemetry for real-time vehicle monitoring. The vehicle should be aerodynamically efficient and fast enough with the electric motor to show the validity of human powered vehicles as opposed to traditional methods of transportation (cars). Our secondary goal is to cultivate a growth mindset, and train students to become better engineers. We want to build off of students' eagerness to learn and give students the space to learn, grow and practice. There are plenty of technical skills to grow in during this project like computer-aided design, finite element analysis, manufacturable drawings, electrical circuits and more. Through this project our hope is not solely that students become good engineers but become confident in their engineering skills.

Timeline

Summer 2025: Onboarding of new members and initial research phase

Fall 2025: Subsystem development, prototyping, and refinement

Winter 2026: Manufacturing, final assembly, and testing of the vehicle

April 2026: ASME eFX Dallas e-HPVC Competition

Requirements and Regulations

The design of the vehicle must also meet performance safety requirements detailed by the rules of the competition. The vehicle must demonstrate that it can come to a stop from a speed of 25 km/hr in a distance of 6 m. It must also have a turning radius of 8 m and demonstrate stability by moving for 30 m in a straight line at the speed of 5 to 8 km/hr. Each front wheel applied to the vehicle must contain its own brake.

The vehicle must use a rollover protection system that absorbs energy in a toppling accident. It must also prevent the body from contacting the ground as best as possible. A top load of 2670 N and a side load of 1330 N shall be applied without any indication of permanent deformation or fracture. There can be some elastic deformation, with a limit of 5.1 cm from the top load and 3.8 cm from the side load. Any permanent deformations must be attended to and fixed accordingly. The vehicle must avoid sharp edges and protrusions and all drivetrain components must contain guards.

Electrical System Requirements and Regulations

The vehicle may utilize the use of one electrical motor. It must be rated for a maximum capacity of 500 W. The vehicle is limited to one battery with a maximum capacity of 500 Wh. The maximum system voltage is 50V. All electrical equipment must be properly fused and the battery must be isolated from the driver using a rigid bulkhead. Lastly, the vehicle must have an emergency shutdown system that isolates the battery from the rest of the system. Not only is the electric motor necessary for pedal assistance during the uphill portions of the competition, this provides the opportunity for students to work with green energy vehicles. The national ASME organization understands how green energy is the future and wanted this competition to reflect the work that students may get after graduation.

Team Structure

Project Manager

The Project Manager collaborates with the Chief Engineer to define project scope, schedule, and budget. They coordinate with subteams to ensure deadlines, goals, and timelines are met and meet regularly with subteam leads and to assess progress and plans. They maintain a good understanding of project details across all subteams and foster clear communication between subteam leads and their teams. They are responsible for managing team finances, documentation and reports, as well as allocating resources such as budget, supplies, and personnel alongside the Chief Engineer. They also coordinate system integration efforts and, when disagreements arise, make executive technical decisions to guide the team forward.

Chief Engineer

The Chief Engineer coordinates with subteam leads to ensure deadlines and goals are met. They maintain comprehensive knowledge of technical details across all subsystems and write the necessary technical procedures and documentation for vehicle development. They are also responsible for maintaining the Master CAD of the vehicle for reference and manufacturing as well as systems integration of all subteams. In collaboration with the Project Manager, they allocate resources and personnel to keep the project on track. When disagreements arise, they provide executive technical decisions to guide the team forward.

Steering & Braking Lead

The Steering & Braking Lead is responsible for the research, design, and implementation of the steering geometry and brakes. They ensure that all parts fit smoothly together to allow for responsive brakes and steering. They also need to make sure that all the parts can mount cleanly onto the chassis and allow for room to weld said parts on.

Drivetrain Lead

The Drivetrain Lead is responsible for researching and defining gear ratios and chain layouts. They also distribute tasks to members to simulate and test the drivetrain, using simulation software, such as MATLAB, and designing and manufacturing an accurate prototype. They also work with other subteam leaders to ensure that the drivetrain is successfully integrated onto the vehicle without interfering with other components.

Aerobody Lead

The Aerobody Lead is responsible for the research, design, test and manufacturing of the vehicle fairing and aerodynamic devices. They will perform CFD and FEA analysis on aerodynamic components to determine and minimize drag coefficients while optimizing speed. They will distribute tasks and set timelines for their subteam to design, simulate, validate and manufacture the components for competition.

Chassis & Human Interface Lead

The Chassis & Human Interface Lead oversees the design, manufacturing, and testing of the vehicle’s chassis to ensure that all structural components perform as intended. They are also responsible for rider ergonomics and seat geometry to delay rider fatigue and enhance rider performance. They will work with other subteam leads to ensure proper integration of subsystems and verify fit and alignment.

Electrical Lead

The Electrical Lead oversees the development of both primary and auxiliary electrical systems. They conduct research and source essential components, then manage the testing, debugging, and validation of all circuits throughout the vehicle. They coordinate wire manufacturing and harness assembly and ensure proper installation and integration across every subsystem. They review schematics, board layouts, and wiring diagrams created by subteam members and explain and justify their electrical design decisions during research, prototyping, and integration phases. They also distribute tasks and set timelines to keep the electrical team on track.

Operations Lead

The Operations Lead oversees the project’s finances, social media, and outreach programs. They work under the Project Manager to identify the best ways to support the team and coordinate deadlines and event participation. They delegate tasks to the Operations team as directed by the Project Manager and set deadlines for task completion, reporting progress back to the Project Manager. They review all emails and social media posts before they go out and secure confirmation from the Project Manager for important communications such as sponsorship packages and corporate messages.

Project Media

Project Poster