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Transportation Group. Christina Fenn Patrick Wheeler Rob Benkovic Brian Brown Vince Crossley Ryan Botzler Nick Lynch. Segway HT. Changed the way we think about sidewalk travel Provided a cheaper, environmentally safe alternative to automobiles
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Transportation Group Christina Fenn Patrick Wheeler Rob Benkovic Brian Brown Vince Crossley Ryan Botzler Nick Lynch
Segway HT • Changed the way we think about sidewalk travel • Provided a cheaper, environmentally safe alternative to automobiles • Uses revolutionary new technology to balance and control a 2 wheeled vehicle
Our Mission • To design and construct a significantly cheaper and more efficient alternative to the Segway HT
Goals for the Project • Make sidewalk travel in a city environment much easier • Provide an environmentally safe alternative to automobiles • Allow people to travel at up to 3 times the speed of walking • Maintain a “user-friendly” control system • Allow for easy maneuverability through crowed areas • Keep lightweight and portable
Technical Goals • 2 front drive wheels with either 1 or 2 heavy-duty casters in the back • 2 independent reversible motors allowing for a 0 degree turning radius • Rechargable 12 or 24 volt batteries • Handgrip operated accelerator/decelerator controls • Aluminum frame
Preliminary Schedule • 1/15-2/12 Initial Planning • 2/12-2/19 Order Scooter • 2/19-2/25 Take Apart Scooter…Order Wheels, axels, gears, speed controllers • 2/26-3/1 Continue analyzing scooter…organize parts and materials • 3/2-3/11 Spring Break • 3/12-3/18 Finalize design plans…Order framework, bearings, bolts, plating • 3/19-3/26 Begin building motor/wheel/battery setup • 4/3-4/9 Build framework, incorporate drivetrain • 4/10-4/17 Finish construction, test and fine-tune product • 4/18 FINISH
Actual Project Timeline • 1/15-2/25 Project Planning (1 week behind) • 2/26-3/1 Order scooters (1 week behind) • 3/2-3/11 Spring Break • 3/12-3/18 Analyze Scooters…Organize Parts and Materials (2 weeks behind) • 3/19-3/26 Modify scooter frame, develop new project design, meet with Prof. Haller about motor control, order motor controls • 4/3-4/9 Finalize Design, begin build wheel/gear setup, order aluminum plating (2 weeks behind) • 4/10-4/17 Continue wheel/gear construction, attach handlebars, purchase final parts, build throttle controls, put together wiring harness • 4/18-4/24 Attach caster, bolt together frame, attach motor, speed controls • 4/25 Fine tune and test, FINISH (1 week behind)
Challenges • Limited timeframe • Limited technical knowledge • Needed lots of research • Problems finalizing design • Difficulty finding necessary components • Difficulty scheduling meeting times
Accomplishments • Capable of both forward and reverse motion • Accomplishes 0 degree turning radius goal • Semi-portable, can be lifted by one person (approx. 50-60 lbs.) • About shoulder width and only 17” long, allowing for easy maneuverability through crowds • 11” Platform allows user to see above crowds
Needs Improvement • Slow acceleration and reaction time by motors • Gear ratio does not provide enough power • Single caster can become unstable at higher speeds • Inefficient use of space • Forced to put motor controls outside of the body
How to Improve • Spend more time testing and analyzing strengths and weaknesses • Enable more direct control of wheel speeds • Cut back on weight allowing for quicker acceleration • Design and build a more efficient frame • Incorporate charging capability