The Stabili-Bike is: Recumbent Seat Over-running Clutch Internally - - PowerPoint PPT Presentation

Stabili-Bike

Blue A: Mark Cote Courtney Greene Andrew Harlan Albert Hernandez

The Stabili-Bike is:

Internally Geared Hub Over-running Clutch Gyroscopic Flywheel Recumbent Seat

Problem/Need

n Current bicycle designs are:

n Too heavy n Too large/difficult to transport n Very different looking

n A stable bike that:

n Allows for a greater range of rider skill levels n Teaches balance, and proper riding technique n Unobtrusive appearance

Specific Market

n Teenagers (14+) with

special needs, esp. Down’s Syndrome

n Also useful for anyone

who has difficulty balancing on a bicycle

n 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, www.ndss.org †Source: Leage of American Bicyclists: www.bikeleague.org

Design Requirements

n Increases stability n Easier to transport n Normalcy n Inexpensive

Main Stability Factors

n Fork Angle

n Helps keep steering wheel straight and reject

unintentional turns

n Gyroscopic Forces

n Places wheel in correct position during turns

n Center of Gravity

n Lower = better!

Bike Test Pictures

Bike Test Video

Main Features

n Overrunning clutch

n Allows flywheel to spin freely n Uninhibited braking n Continual gyroscopic effect

n Low-rider design

n Seat closer to ground n Provides a lower center of gravity

n Gyroscopic Flywheel

n Flywheel is powered by user pedaling n Teaches proper balancing techniques

Flywheel Concept

Front Wheel Hub Concept

Spoke Interface Center Free-Spinning Bearing One-Way Locking Rod Inter-Locking Hub

Feasibility

n Testing gives promising results towards

stability

n Can easily incorporate flywheel into a stock

wheel

n Flywheel is human-powered

Questions?