Bicycle Assist ET 493 Fall 2017 Thomas Ballinger Evan Vasalech Samuel Campo Jeremy Passaro Dr. Mitra
About The Project Low Cost Low Profile Readily Available Safe Universal Fit Efficient
Electric Motor Vs Gas Motor Pros Quiet Emission Free Able to apply max torque instantly High Efficiency Cons Battery Cost Frequent Recharging Limited Range Pros Convenient Repairable Range Fast refueling High torque output at max rpm Cons Refueling can get expensive Emissions Noisy
Power Recharging Options Wall Outlet Solar Manual 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 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 Motor placement Safety stop options Electrical circuit Ergonomic considerations Look into safety laws and regulations Bracket designs Sensors Budget Staying on schedule
Budget “Low Cost, Low Profile” Other designs cost up to $1200 with some of the cheaper ones costing around $500 Battery, sensors, and motor will be our biggest budget issues 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 Start: 9/22/17 ID: 1 Finish: 9/28/17 Dur: 5 days Schedule Start: 9/22/17 ID: 2 Finish: 9/23/17 Dur: 2 days Force Analysis Start: 9/25/17 ID: 3 Finish: 10/5/17 Dur: 9 days Circuit Design Start: 10/5/17 ID: 4 Finish: 10/12/17 Dur: 6 days Battery Research Start: 10/13/17 ID: 5 Finish: 10/17/17 Dur: 3 days Motor Research Start: 10/13/17 ID: 6 Finish: 10/17/17 Dur: 3 days Motor Mount Design Start: 10/18/17 ID: 7 Finish: 10/26/17 Dur: 7 days Range Calculations Start: 10/27/17 ID: 8 Finish: 11/6/17 Dur: 7 days Safety Start: 11/7/17 ID: 9 Finish: 11/15/17 Dur: 7 days Final Report Due Start: 11/16/17 ID: 10 Finish: 11/28/17 Dur: 9 days