1. Blue A: Mark Cote Courtney Greene Andrew Harlan Albert Hernandez
Stabili-Bike
Blue A:
Mark Cote
Courtney Greene
Andrew Harlan
Albert Hernandez

2. The Stabili-Bike is: Recumbent Seat Over-running Clutch
Internally Geared Hub
Gyroscopic Flywheel

3. Problem/Need Current bicycle designs are: A stable bike that:
Too heavy
Too large/difficult to transport
Very different looking
A stable bike that:
Allows for a greater range of rider skill levels
Teaches balance, and proper riding technique
Unobtrusive appearance

4. Specific Market
Teenagers (14+) with special needs, esp. Down’s Syndrome
Also useful for anyone who has difficulty balancing on a bicycle
Contact: Tom McElman, Cardinal Cushing School
U.S. cases of Down’s Syndrome
350,000+ *
Bikes sold domestically in 2001
16.6 million†
*Source: National Downs Syndrome Society, †Source: Leage of American Bicyclists:

5. Design Requirements Increases stability Easier to transport Normalcy
Inexpensive

6. Main Stability Factors
Fork Angle
Helps keep steering wheel straight and reject unintentional turns
Gyroscopic Forces
Places wheel in correct position during turns
Center of Gravity
Lower = better!

7. Bike Test Pictures

8. Bike Test Video

9. Main Features Overrunning clutch Low-rider design Gyroscopic Flywheel
Allows flywheel to spin freely
Uninhibited braking
Continual gyroscopic effect
Low-rider design
Seat closer to ground
Provides a lower center of gravity
Gyroscopic Flywheel
Flywheel is powered by user pedaling
Teaches proper balancing techniques

10. Flywheel Concept

11. Front Wheel Hub Concept
Spoke Interface
Center Free-Spinning Bearing
One-Way Locking Rod
Inter-Locking Hub

12. Feasibility Testing gives promising results towards stability
Can easily incorporate flywheel into a stock wheel
Flywheel is human-powered

13. Questions?