4/19/2012 1The Ohio State University - Engineering 692 Choluteca, Honduras Group Members: Brandon King, Nirupa Manohar, Elizabeth Schweizer, Stephanie Tsavaris 4/19/2012 Bicycle Power – Alternative Energy and Fitness Solution

4/19/2012 2The Ohio State University - Engineering 692 Project Component – Roles All team members will contribute to construction and testing. Team MemberRole Brandon KingHistorian Nirupa ManoharTeam Recorder Elizabeth SchweizerSchedule Coordinator Stephanie TsavarisTeam Leader

4/19/2012 3The Ohio State University - Engineering 692 Table of Contents Overview Sustainability and Feasibility Pre-Trip Project Components Project Implementation in Honduras Future Recommendations Acknowledgements

4/19/2012 4The Ohio State University - Engineering 692 Overview Encourage exercise –Form fitness program –Enforce healthy lifestyles Form of alternative energy –Electricity is very expensive Designed for use in villages with limited to no electricity Worked with Larry and Angie Overholt from the World Gospel Mission as well as vocational school staff.

4/19/2012 5The Ohio State University - Engineering 692 Influences Readings “… potential projects at the school that would not only benefit OSU students, but also the vocational school students as well as the community” - Importance of Appropriate Collaboration with International Partners Team Discussion –Decided on the most easily reproducible and beneficial design –Decided on alternator option over permanent magnet motor.

4/19/2012 6The Ohio State University - Engineering 692 How is it Sustainable? Plenty of Bicycles in Honduras Affordable, Replicable Design Human Powered No Reliance on Fossil Fuels Environmentally Friendly

4/19/2012 7The Ohio State University - Engineering 692 Feasibility Analysis Maintainability –Educate Vocational School Staff on Operation Safety and Risk –Closed off, Protected Electrical Components –Secure Bike Stand for Stability

4/19/2012 8The Ohio State University - Engineering 692 Project Components

4/19/2012 9The Ohio State University - Engineering 692 Stand Prototype Front View Side View Top View

4/19/ The Ohio State University - Engineering 692 System Layout

4/19/ The Ohio State University - Engineering 692 Power Analysis

4/19/ The Ohio State University - Engineering 692 Project Bill Of Materials Pre-Trip Actual ExpensesActual Expenses in Choluteca ProjectProject SpecificSharedProject SpecificShared Bicycle$161.38$22.29$0.00$28.98 Item Alternator 1993 Honda Accord$23.45Total 400w Inverter$26.70$ v 20 AHBattery$60 Alternators (2)$30 5/8" x 4'-0" threaded rod (1x$6.57); 5/8" nuts (4x$0.35); 5/8" couplings (6x$1.43) $16.55 Miscellaneous items$4.68 Cylinder$0.00 Rails$0.00 Total: $212.65

4/19/ The Ohio State University - Engineering 692 Pre-Trip Timeline January 4 th : Introduction and initial project discussion 11 th : Project management and formed project teams 18 th : Presented and edited project proposal drafts February 8 th : Project design review - short team presentations 29 th : Project presentations March 7 th : Final project wrap up 17 th : Departed Columbus and arrived in Choluteca

4/19/ The Ohio State University - Engineering 692 In-Country (Honduras) Timeline March 18 th : Beach day 19 th : Inspected pre-made bike stand and began assembly 20 th -22 nd : Worked on implementing 1 st alternator 22 nd -23 rd : Worked on implementing 2 nd alternator 24 th : Returned home

4/19/ The Ohio State University - Engineering 692 Implementation in Honduras

4/19/ The Ohio State University - Engineering 692 Stand Stand was pre-fabricated –Almost ready upon arrival Modifications

4/19/ The Ohio State University - Engineering 692 Additions to Stand

4/19/ The Ohio State University - Engineering 692 Initial Build Tray made of scrap c-channel Vertical supports added to attach alternator 3 rd supports added to support cylinder Thicken alternator shaft to fit cylinder snuggly Duct tape 2 Layers of copper wire 1 Layer of copper wire Vinyl tapeDuct tape

4/19/ The Ohio State University - Engineering 692 Modifications Holes drilled to attach tray to stand –Hand drill –Drill press Rubber from a spare inner tube used to increase friction Super glue Zip ties

4/19/ The Ohio State University - Engineering 692 Securing the Components Metal added to stabilize cylinder support Washers used as spacers

4/19/ The Ohio State University - Engineering 692 Assembly Attach alternator to trayStabilize cylinder

4/19/ The Ohio State University - Engineering st Alternator Results First Alternator Stable tray built Initially working system -Ratio 22:1 -Net Current 0.5 A -Time to charge battery 40 hrs Short circuited alternator

4/19/ The Ohio State University - Engineering 692 Second Alternator Had to build new tray –2 nd alternator was smaller than first Altered dimensions to fit between rails better Used 3 vertical supports

4/19/ The Ohio State University - Engineering nd Alternator Results Second Alternator New tray built in timely fashion -More accurate design Faulty alternator

4/19/ The Ohio State University - Engineering 692 Project Deliverables Bike-electric system needing modifications Packet of Manuals –Construction –Operation –Power Analysis

4/19/ The Ohio State University - Engineering 692 Future Recommendations

4/19/ The Ohio State University - Engineering 692 Recommendations Have vocational school students take ownership of project Acquire working alternator Consider belt design

4/19/ The Ohio State University - Engineering 692 Belt Design Advantages Simpler System Better Gear Ratio Disadvantages Requires a designated bike Belt needs to be purchased and adjusted to the appropriate tightness (Generator.com)

4/19/ The Ohio State University - Engineering 692 Belt Design Advantages Item Connected to Alternator Shaft Gear Ratio Rpms of Alternator Shaft (Given an input of 60 rpms) Percent Increase Cylinder (current)22:11320 rpm ” pulley diameter 27.8:11667 rpm26.3% 2” pulley diameter33:11980 rpm50.0%

4/19/ The Ohio State University - Engineering 692 Choluteca Community Helped provide information for design process Helped fabricate stand prior to arrival Helped with additional materials such as wires and provided tools Helped with machining processes

4/19/ The Ohio State University - Engineering 692 Acknowledgements Roger Dzwonczyk, PE Miriam Simon Dr. John Merrill Larry and Angie Overholt & World Gospel Mission Vocational school staff OSU Office of International Affairs

4/19/ The Ohio State University - Engineering 692 Questions?

4/19/ The Ohio State University - Engineering 692 Manuals Operation Manual: Construction Manual: Power Calculations Manual:

4/19/ The Ohio State University - Engineering 692