1. Stationary Balance Training Bicycle - P08001 Team Members: Jennifer Zelasko - IE Carl Mangelsdorf - ME Jeff Tempest - ME James Nardo – ME Jonathan Bawas – EE Sponsored by The National Science Foundation under Award No. BES-0527358

2. Project Description Customer: Nazareth College Physical Therapy Clinic Safe intermediate step between a stationary and traditional bicycle Balance training for recovering physical therapy patients –Stroke –Neurological disorders

3. Customer Key Needs / Specs Adjustable levels of tilt resistance Provide meaningful feedback on patient’s ability to balance Safe design Accommodating weight capacity Tilt Range: 0°-10.5° Tilt Levels: Infinite Tilt Resistance Range: 0-150 lbs Auditory Feedback: 2 Buzzers slow/fast pulsed Visual Feedback: LED Arrays – Red, Yellow, and Green Indicators Upright, locked position Ergonomic adjustments for seat height and handlebar positions. Patient weight in the range of 90lbs – 300lbs

4. Concept Overview Telescoping Seat Height w/ Pin-lock Pivoting Arm w/ Locked Positions Pillow Block Ball Bearing To Allow Lateral Tilt (X2) Wheels For Portability Pin-lock control for upright “Locked Position” Spring compression adjusted with Winch Pulley Mechanism Friction Resistance Pedals

5. Concept Overview - Feedback Audio / Visual Display Concept – Visual Feedback LED Bank – indicating direction and level of tilt Color Code – Green – normal tilt range – Yellow – region to correct balance – Red – Tip-over condition imminent – Audio Feedback 2 Buzzers provides audio feedback – Auditory indication occur at yellow and red warning levels – Two tones – Slow Pulsed tone for “yellow” level – Fast pulse tone for “Red” Level

6. System Architecture Show videos of feedback system, and bike demonstration.

7. Final Design Summary Leg brace supports: keep self aligning bearings perpendicular to axle Handlebar adjustments: rotation at T-connection not necessary to achieve design specs Feedback system: buffer used in place of comparator to simplify adjustments Final Budget: –Project Budget = $2,000 –Total Cost of Parts = $1,789.14 Including cost of donations = $2,009.75 –$210.86 under budget

8. Testing Results Prototype assembly is complete and meets all specifications P8001 - Balance Training Bike - 5/14/08 Specification Number Customer Need Number Design Specification Importance To Customer Unit of Measure Marginal Value Ideal ValueTest Result Most Important13,10,22, 7Safe9BinaryPass All foreseeable hazards in the FMEA have been counteracted. 21,2,5,16,18,19Tilt Range9Degrees0 - 80 - 15Usable range for patients was determined to be 10.5 degrees. 31,2,5,16,18,19Levels of Tilt9Levels3InfiniteInifnite levels of tilt with winch control. 410,22Upright Locked Position9BinaryPass Force test passed. 51,2,5,16,18,19Tilt Resistance Range9Lbs0 - 1500 to >150Force test passed. 63,21Auditory Feedback of Tilt9Decibels50 - 8025 - 80Piezo audio indicators range from 60 dB to 81 dB. 74, 17Non-alternating Handle Bars9BinaryPass Traditional handlebars used. 810, 12Seat Height Range (pedal to seat)9Inches27 - 34 34Actual range: 26 - 36 inches. 910, 13Handlebar Height (vertical dist. - seat to handlebar)9Inches9 - 10 10Actual range: 0 - 10 inches at each seat height 1010, 14 Handlebar Reach (horizontal dist. - seat to handlebar)9Inches15 - 19 19Actual range: 8 - 23 inches. 1110Cross member height9Inches0 - 24<12Actual Height: 5 inches 1213Bike Capacity9Lbs90 - 300 Capable of withstanding atleast 310 lbs. 133,21Visual Feedback of Tilt3BinaryFailPassSurvey test passed. 147, 14Portability - Force needed to transport bike3Lbs51<51Max force needed to lift rear of bike: 50 lbs 1511Pedal Resistance3Ft-LbsConstantVariablePedal resistance is variable with friction knob adjustment. 169, 12Seat Size9Inches>1010 - 12Seat width: 12 inches 176Adjustment Tools3-Basic ToolsHandAll adjstments can be made by hand. 187, 20 Force needed to bring patient to Upright Locked Position9Lbs51<51No manual force required. Winch can be used to upright patient. 196Service Intervals1FrequencyOnce/yearNeverBearings and pulleys must be greased once per year. Least Important2015Color1BinaryPass Survey test passed.

9. Objective Project Evaluation Successes: Riding motion is realistic. The tilt resistance mechanism functions as designed (no side-to-side oscillation). Potential for Future Improvements: Winch is integrated with feedback system to automatically adjust level of tilt, PT does not manually need to shorten range of tilt.