Bicycle Assist Thomas Ballinger Evan Vasalech Samuel Campo

Bicycle Assist Thomas Ballinger Evan Vasalech Samuel Campo Jeremy Passaro ET 493 Fall 2017 Dr. Mitra

About The Project • Low Cost • Low Profile • Readily Available • Safe • Universal Fit • Efficient

Electric Motor Vs Gas Motor Pros Quiet Convenient Emission Free Repairable Able to apply max torque instantly Range Fast refueling High torque output at max rpm High Efficiency Cons Battery Cost Frequent Recharging Limited Range Cons Refueling can get expensive Emissions Noisy

Power Recharging Options Wall Outlet • • • Solar Easy to recharge after use • Need an DC battery charger to charge • Constrained to outlet locations • Uses sunlight to recharge battery Limited to weather conditions Not constrained to civilization Manual • Least involved method • Possible slow recharge time • No constraints but manual labor

Safety Stop Options Tension Sensor in chain Rocker switch with relay on brakes Angle sensors Acceleration sensors

Tasks Ahead Motor options Look into safety laws and regulations Motor placement Bracket designs Safety stop options Sensors Electrical circuit Budget Ergonomic considerations Staying on schedule

Budget v “Low Cost, Low Profile” v Other designs cost up to $1200 with some of the cheaper ones costing around $500 v Battery, sensors, and motor will be our biggest budget issues v Giving up some benefits for cost

Individual Tasks – Team Tasks ET 493 Jeremy Samuel Evan Tommy Research Force Analysis Battery Motor Range Circuit Motor Mount Safety Budget Analysis Schedule

Schedule (Subject to change) Research Best Methods Motor Research Start: 9/22/17 ID: 1 Start: 10/13/17 ID: 6 Finish: 9/28/17 Dur: 5 days Finish: 10/17/17 Dur: 3 days Schedule Motor Mount Design Start: 9/22/17 ID: 2 Start: 10/18/17 ID: 7 Finish: 9/23/17 Dur: 2 days Finish: 10/26/17 Dur: 7 days Force Analysis Range Calculations Start: 9/25/17 ID: 3 Start: 10/27/17 ID: 8 Finish: 10/5/17 Dur: 9 days Finish: 11/6/17 Dur: 7 days Circuit Design Safety Start: 10/5/17 ID: 4 Start: 11/7/17 ID: 9 Finish: 10/12/17 Dur: 6 days Finish: 11/15/17 Dur: 7 days Battery Research Final Report Due Start: 10/13/17 ID: 5 Start: 11/16/17 ID: 10 Finish: 10/17/17 Dur: 3 days Finish: 11/28/17 Dur: 9 days