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Full-Text Articles in Engineering
Maitreya Desalination, Riley Taft, Hudson Kispert, Brendan Dizon
Maitreya Desalination, Riley Taft, Hudson Kispert, Brendan Dizon
Mechanical Engineering
This document relays the design and manufacture of a dual power input Reverse Osmosis desalination unit. It's power sources are electric drive and human power via recumbent seated cycling. Fresh water outputs range from 4 - 7 GPH for human power inputs of 150 - 280 Watts depending on the selected gearing ratio from the derailleur.
Adjustable Head Tube Angle Headset, Glenn Petersen, Ben Harper, Josh Martin, Dylan Prins
Adjustable Head Tube Angle Headset, Glenn Petersen, Ben Harper, Josh Martin, Dylan Prins
Mechanical Engineering
This final design review report describes the design, manufacture, and test process of a bicycle headset capable of quickly and easily adjusting the effective head tube angle. The evolution of mountain bike geometry has forced bike designers to compromise between climbing and descending performance when choosing a head tube angle. A headset capable of quickly adjusting the effective head tube angle would allow riders to optimize their bike’s geometry for different stages of riding. This report details the research, idea generation, concept development and selection, design, manufacturing, and testing of our adjustable head tube angle headset.
Bicycle Headset With Adjustable Spring Rate, Andrew W. Drees, Jonah Masumoto, Camden R.S. Boshart, Matthew B. Mounteer
Bicycle Headset With Adjustable Spring Rate, Andrew W. Drees, Jonah Masumoto, Camden R.S. Boshart, Matthew B. Mounteer
Mechanical Engineering
Fork flop can play an important role in the performance of a mountain bike. This phenomenon of fork flop is known as the tendency that the front wheel of a bike wants to flop over to one side when moving slowly. The fork flop experienced on a bicycle changes with the geometry of the bike, but our team sought to change the fork flop experienced through an adjustable internal spring design that attaches to the bicycle instead. From our research, we decided to utilize torsion springs as the method for mitigating fork flop. We also decided to use load cells …
Human Powered Vehicle Trainer, Nicholas Hung Nguyen, Gregory Reece Bridges, Jacinta Garcia, Mitchell Sidney Smith
Human Powered Vehicle Trainer, Nicholas Hung Nguyen, Gregory Reece Bridges, Jacinta Garcia, Mitchell Sidney Smith
Mechanical Engineering
This Final Design Review (FDR) document describes the final design and completed prototype of a Mechanical Engineering senior project team at California Polytechnic State University, San Luis Obispo. The project goal is to create an adjustable human powered vehicle training bike for George Leone that allows a rider to gain confidence with the unique reclined bike geometry ahead of the World Human Powered Speed Challenge at Battle Mountain, Nevada. This document outlines the customer’s needs and technical research performed which together determine the project’s scope and engineering specifications. Next, we present the initial idea generation process and its results, along …
Fluid Power Vehicle Challenge - The Incompressibles - Final Design Report, Nicholas Gholdoian, Russell Posin, David Vitt, Alex Knickerbocker, Kyle Franck, Julian Rodkiewicz
Fluid Power Vehicle Challenge - The Incompressibles - Final Design Report, Nicholas Gholdoian, Russell Posin, David Vitt, Alex Knickerbocker, Kyle Franck, Julian Rodkiewicz
Mechanical Engineering
This report provides a comprehensive description of the research, analysis and design work that The Incompressibles have completed thus far in the senior project process. This document includes all the work that The Incompressibles have completed for the team’s Preliminary Design Review (PDR), Critical Design Review (CDR), the work leading up to the 2019 FPVC competiton and the competition results. This report includes the initial research that the team completed for the fluid power competition, first iterations of designs, final iterations of designs, manufacturing results and processes, and finally testing and results from competition. With a new design for the …
Cal Poly Compost Chomper, David Anthony Jungquist, Cory James Parmenter, Joseph Mark Mcgill
Cal Poly Compost Chomper, David Anthony Jungquist, Cory James Parmenter, Joseph Mark Mcgill
Mechanical Engineering
The purpose of this final design report is to detail the design, manufacturing, and testing of a bicycle powered compost cutter for use by the Captain Raymond Collin’s Elementary school. Students in the garden program are tired of manually chopping up garden waste into small enough pieces to be composted effectively. Project Sponsor and Master Gardener, Susan Deogracias had the idea to create a pedal powered compost cutter which would save time and improve moral for the aspiring gardeners.
This report details the ideation process the team went through in defining the compost cutting system. Engineering methods are documented for …
Pedal-Powered Drivetrain System, Geremy J. Patterson, Callaghan Fenerty, Bradley Welch
Pedal-Powered Drivetrain System, Geremy J. Patterson, Callaghan Fenerty, Bradley Welch
Mechanical Engineering
No abstract provided.
Parker Hannifin Chainless Challenge 2014-15 Senior Design Project, Matt Pallotta, Nathan Klammer, Kemper Whaley, Jack Rechtin
Parker Hannifin Chainless Challenge 2014-15 Senior Design Project, Matt Pallotta, Nathan Klammer, Kemper Whaley, Jack Rechtin
Mechanical Engineering
California Polytechnic State University has been invited to compete in the Parker Hannifin Chainless Challenge Competition in 2014-15. Cal Poly has chosen a team of mechanical engineering students to take part. We have named our team “Bike Under Pressure” and all references as such refer to the team.
The challenge is to build a bicycle which does not have a solid mechanical connection between the power input of the rider to the power output of the wheel(s). After conducting research into different previous designs and brainstorming designs of their own, Bike Under Pressure developed two conceptual designs. One design featured …
Bicycle Wheel Test Machine, Dylan Harper, Kevin Hom, Ross Williams
Bicycle Wheel Test Machine, Dylan Harper, Kevin Hom, Ross Williams
Mechanical Engineering
In recent years, the cycling industry has witnessed huge advancements in bicycle components and materials. The age old goals of speed and low weight are still present today, but the pursuit of these goals may be reducing the structural stability of various components integral to wheel performance, including the wheel hub bearings. These bearings are invaluable to bicycles but little is known about how the forces and loads applied to a bicycle affect the performance of these bearings. Broken axles and hubs are indicators of significant stresses within the hub, but little is known about how the resulting deformation affects …
Aerodynamic Test Platform For Human Powered Vehicle (Hpv), Spencer Wangerin, Spencer Lillywhite, Colburn Davis
Aerodynamic Test Platform For Human Powered Vehicle (Hpv), Spencer Wangerin, Spencer Lillywhite, Colburn Davis
Mechanical Engineering
The Aerodynamic Test Platform (ATP) for the Cal Poly HPV Club is a system that was designed by Cal Poly mechanical engineering students to measure aerodynamic characteristics of a human-powered vehicle (HPV). The HPV team desired a system that could quantify the lift, drag, and other aerodynamic qualities of a full scale HPV at various orientations in oncoming airflow. Established methods for determining aerodynamic characteristics include computational fluid dynamics (CFD) and wind tunnel testing of scaled models. The ATP was devised to simulate the test results given by a full-scale wind tunnel without requiring a wind tunnel large enough to …