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One-Ride Human Powered Vehicle Alex Fisher Santa Clara University Santa Clara University Scholar Commons Mechanical Engineering Senior Theses Engineering Senior Theses 6-7-2015 One-ride human powered vehicle Alex Fisher Santa Clara University Alex Sahyoun Santa Clara University Geoffrey Schmelzer Santa Clara University Brendan Taylor Santa Clara University C.J. Toy Santa Clara University Follow this and additional works at: https://scholarcommons.scu.edu/mech_senior Part of the Mechanical Engineering Commons Recommended Citation Fisher, Alex; Sahyoun, Alex; Schmelzer, Geoffrey; Taylor, Brendan; and Toy, C.J., "One-ride human powered vehicle" (2015). Mechanical Engineering Senior Theses. 41. https://scholarcommons.scu.edu/mech_senior/41 This Thesis is brought to you for free and open access by the Engineering Senior Theses at Scholar Commons. It has been accepted for inclusion in Mechanical Engineering Senior Theses by an authorized administrator of Scholar Commons. For more information, please contact [email protected]. One-Ride Human Powered Vehicle By Alex Fisher, Alex Sahyoun, Geoffrey Schmelzer, Brendan Taylor and C.J. Toy Senior Design Project Report Submitted to the Department of Mechanical Engineering of SANTA CLARA UNIVERSITY in Partial Fulfillment of the requirements for the degree of Bachelor of Science in Mechanical Engineering Santa Clara, California Spring 2015 Santa Clara Human Powered Vehicle 2014-2015 Alex Fisher, Alex Sahyoun, Geoffrey Schmelzer, Brendan Taylor and C.J. Toy Department of Mechanical Engineering Santa Clara University 2015 Abstract This document discusses the design, analysis, manufacturing and testing of the One-Ride human powered vehicle which was entered into the 2015 ASME West Coast HPVC Competition. The goal of the vehicle is to entice people to switch from gas powered vehicles to the One-Ride for trips of up to 20 miles round trip. The One-Ride design features fully adjustable seating and steering positions and was designed to fit anyone between the heights of 5’2” and 6’4” comfortably. The seat is adjusted using metal sliders, manufactured in the SCU machine shop, which fit into brackets attached to the frame. The bike features telescopic steering which is adjusted by the loosening and tightening of collar clamps. To increase the strength and safety of the frame, the welding and heat treatment were contracted to industry professionals. The frame was welded by Chavez Welding and heat treated by Byington Steel Treating. Deformation in the seat frame during heat treatment prevented full adjustability of the seat, however was secured in its middle position for testing. The wheelbase of the bike is 73.33 in and has an overall height of 50.77 in. Slop in the steering caused instability at low speeds, which prevented the bike from being ridden in the ASME HPVC Competition. Design solutions to both of these problems have been identified. At the completion of senior design, the manufacturing is still ongoing. i Acknowledgements The One-Ride human powered vehicle team would like to extend its gratitude and appreciation to all those who helped make this project possible. Starting with Santa Clara University and the Santa Clara University School of Engineering for their support throughout the entire process, and Dr. Drazen Fabris and Dr. Calvin Tszeng who served as advisors to the team and were extremely helpful and insightful to the team through each stage of the project. We would also like to acknowledge Dr. Timothy Hight and Dr. Scott Abrahamson who gave much of their time to helping identify and incorporate solutions to certain problems and customer needs into our design. The team would also like to thank Mr. Don MacCubbin, the Santa Clara University machine shop manager, and Chavez Welding who assisted the team in building and manufacturing the bicycle. Finally the team would like to thank the family and friends who have supported the members over the last four years at Santa Clara. Without their support this endeavor would not have been realized. ii TABLE OF CONTENTS Abstract ......................................................................................................................i Acknowledgements ....................................................................................................ii Chapter 1: Introduction ..........................................................................................1 1.1 Background and Motivation ..............................................................................1 1.2 Literature Review...............................................................................................2 1.3 Problem Statement .............................................................................................4 1.4 ASME HPV Competition Requirements ...........................................................4 1.5 Bike Dimensions ................................................................................................7 Chapter 2: System Level Considerations ...............................................................9 2.1 Requirements .....................................................................................................9 2.2 Customer Interviews ..........................................................................................9 2.2.1 Potential Customer Surveys………………………………………...…9 2.2.2 Interviews……………………………………………………………...10 2.3 Customer Needs .................................................................................................10 2.4 Engineering Standards and Ethical Constraints .................................................11 2.4.1 Economical…………………………………………………………….11 2.4.2 Environmental Impact…………………………………………………12 2.4.3 Manufacturing Impact…………………………………………………13 2.5 Functional Analysis ...........................................................................................14 2.6 Design Sketch ....................................................................................................17 2.7 Project Management ..........................................................................................20 2.7.1 Timeline………………………………………………………………20 2.7.2 Cost and Budget………………………………………………………21 2.7.3 Team Management……………………………………………………22 2.7.4 Risks and Mitigations………………………………………………...23 2.8 Sustainability......................................................................................................25 2.9 Ethical Impact ...................................................................................................26 2.10 Health and Safety .............................................................................................28 Chapter 3: Detailed Design and Analysis ..............................................................30 3.1 Frame ................................................................................................................30 iii 3.1.1 Background ........................................................................................30 3.1.2 Frame Design .....................................................................................31 3.1.3 Frame Analysis ..................................................................................33 3.1.4 Frame Manufacturing ……………………………………………….39 3.2 Innovation .........................................................................................................40 3.2.1 Innovation Background ......................................................................40 3.2.2 Innovation Design ..............................................................................40 3.2.3 Innovation Manufacturing .................................................................44 3.3 Drivetrain ...........................................................................................................48 3.3.1 Drivetrain Background.......................................................................48 3.3.2 Drivetrain Analysis ............................................................................49 3.3.3 Drivetrain Design ...............................................................................49 3.4 Aerodynamics ....................................................................................................51 3.4.1 Aerodynamic Background ..................................................................51 3.4.2 Aerodynamic Design ..........................................................................52 3.4.3 Aerodynamic Analysis ........................................................................53 3.5 Safety .................................................................................................................56 3.5.1 Safety Background ..............................................................................56 3.5.2 Safety Design ......................................................................................56 3.5.3 Safety Analysis ...................................................................................56 3.6 Challenges, Problems, and Solutions ..................................................................58 Chapter 4: System Integration ...............................................................................62 4.1 System Integration and Test................................................................................62 4.2 Experimental Protocol and Results .....................................................................62 Chapter 5: Cost Analysis and Business Plan .........................................................64 5.1 Cost Analysis ......................................................................................................64
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