The researcher wishes to convey his profound gratitude and sincerest appreciation to those who have extended much effort and assistance contributory to the success of the dissertation. His deepest indebtedness goes particularly to the following:
This dissertation aims to discuss the development of a recumbent tricycle for disable user (one-handed user)…
3.1 Summary of Risks and Actions to Take
3.2 Development of Key Skills
4.1 Suspension System for Tricycle
4.2 Tricycle Lay-outs
6. THEORY AND EQUATION
6.1 Spring Rate
7. MOTION MECHANICS
7.1 Front Fork Suspension
7.2 Rear Suspension
8. DEVELOPMENT AND DESIGN OF SUSPENSION BY SOLIDWORKS
9. MATERIALS FOR THE SUSPENSION SYSTEM
10. MANUFACTURING THE SUSPENSION
LIST OF FIGURES
Figure 2.1 Starley's Coventry Rotary Tricycle
Figure 2.2 Humber Cripper (Griffin 1885)
Figure 2.3 Leaf Springs (Courtesy of Yahoo! Images)
Figure 2.4 The English longbow (Courtesy of Yahoo! Images)
Figure 2.5 Helical or Coiled Springs (Courtesy of Yahoo! Images)
Figure 2.6 Shock Absorber Diagram (http://www.babcox.com/editorial/tr/30158.htm)
Figure 2.7 Anti-roll Bar
Figure 2.8 Track Bar (Courtesy of Yahoo! Images)
Figure 4.1 Fork Suspensions (Silltech Inc. 2005; Yahoo! Images).
Figure 4.2 Suspension Seat Post
Figure 4.3 Rear Suspension
Figure 4.4 Typical Upright Tricycle (Yahoo! Images)
Figure 4.5 Delta Recumbent Tricycle (Yahoo! Images)
Figure 4.6 Tadpole Recumbent Tricycle (Yahoo! Images)
Figure 5.1 Brakes
Figure 5.2 Rear View of the Proposed Suspension System for a Single-handed Recumbent Delta Tricycle (Seen at the Back).
Figure 6.1 The Force to Stretch a spring is Proportional to its Elongation:
Figure 6.2 Shock Absorbers: A - Piston; B - Cylinder; C - Piston Rod; D - Oil
Figure 7.1 Threaded Adjuster Cap
Figure 7.2 Lock - ring Adjuster (Baker 2008)
Figure 7.3 Ramp - type Preload Adjuster (Baker 2008)
Figure 8.1 Shocks and Springs System
Figure 8.2 Shocks and Spring System Assembly Parts
Figure 10.1 Rear Suspension Assembly
Figure 10.2 Rear Wheel Movements within the Suspension...
The front suspension will simply make use of the front fork suspension common in other bicycles and tricycles. The rear suspension however, has been designed particularly to provide additional comfort and safety for a disabled user. It will make use of shocks and external springs together with movable joints and axles.
This dissertation aims to discuss the development of a recumbent tricycle for disable user (one-handed user). It will specifically endeavour to examine the design and manufacture of the suspension system of the recumbent tricycle especially designed to be driven single handed. This study will also provide answers to the following questions.
Three - wheeler rides or tricycles caught the interest of many people because of the safety and merits it brought to cycling. Riding a tricycle does not require enormous skill or strenuous practice. The only thing you have to do is position yourself, step on the pedals and ride on. There are several expediencies that a tricycle can offer such as sustaining larger baggage capacity and accommodating conventional women's wear. Thus tricycle offers both convenience and comfort.
A German paraplegic named Stephen Farffler constructed the first tricycle in 1680. ...
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