by I. Oldenkamp, Industrial Design Engineering, Delft University of Technology
(Permission has been kindly given by I. Oldenkamp, Industrial Design Engineering, Delft University of Technology to allow the Independent Living Institute to present this excert from the Tricycle Production Manual.)
The Tricycle Production Manual has been developed for basically skilled and equipped workshops in developing countries. The manual is, as much as possible, adjusted to the knowledge and experience of workshop workers in these countries. It contains mostly drawings and minimal text to keep the manual accessible to a large group of users.
The first part gives relevant information on tricycle design. The second part is a step-by-step guide to the production of the tricycle. The tricycle production is explained by means of three dimensional drawings and additionally supported by two-dimensional drawings. Measurements are limited to those which are strictly necessary for the drawings to be easily understood. Pictograms are used to indicate the production steps and actions. The structure and lay-out of the manual is clear and practical. The third part gives some ideas about additional features for the tricycle. The fourth part contains extra useful information and alternatives for production. The fifth and last part contains some relevant background information
Who is the tricycle for?
The tricycle is designed primarily for disabled people in Asia, since the result is a joint effort between four Asian organizations. However the tricycle design is also meant for disabled people and their producers in other comparable parts of the world. The tricycle is suitable for disabled people who cannot walk but can use both arms. These users may have lost their mobility by an accident and have a leg amputation or are paralyzed. With the tricycle they have the possibility to travel independently and seek work, sell tickets or transport goods. The measurements (seat, footrest adjustment and propulsion mechanism) of this design are based on persons with a body-length of 1.50 meter up to 1.75 meter. For users who do not fit into this group the measurements should be checked and, if necessary, adjusted.
Why this particular tricycle design?
There are many different tricycles in the world. Some have problems with stability while others are not comfortable or are difficult to produce. In this tricycle design, requirements concerning production, distribution and use have been taken into account as much as possible.
The most important requirements were:
Background of the manual
How was the manual achieved?
The Tricycle Production Manual was part of the project Development of Tricycle Production in Developing Countries (DTP-project), October 1992 - May 1995.
Who contributed to the DTP project?
The project was financed by the Swedish International Development Agency (SIDA) through the Swedish Organization of Handicapped International Aid Foundation (SHIA) and supported by the Swedish Association of Persons disabled by Accidents or by Polio (RTP) and the Swedish Federation of Disabled Persons (DHR). The project was initiated and coordinated by the Center for International Cooperation and Appropriate Technology (CICAT) at the Delft University of Technology (DUT) in the Netherlands. The project has been carried out by the Faculty of Industrial Design Engineering (FIDE) in close cooperation with the following mobility aids producing organizations: Workshop for Rehabilitation and Training of the Handicapped (WORTH) in India; Sarvodaya Economic Enterprise Development Services (SEEDS} in Sri Lanka; McKean Rehabilitation Center (MRC) in Thailand and Bavi Orthopedic Workshop (BOW) in Vietnam. During a period of two years a project-engineer, the manager (or designer) of the tricycle workshop and two technicians from each organization worked for the DTP-project. They collected information, carried out user tests, designed parts or completely new tricycles, built prototypes and optimized the tricycle production. They also participated in the seminars and workshops held respectively in Thailand, the Netherlands, India and Sri Lanka and they participated in a design training in Thailand organized by CICAT/FIDE in cooperation with the Chiang Mai University (Chiang Mai, Thailand).
The Tricycle Production Manual was written by:
Annemiek van Boeijen
For more information please contact:
Faculty of Industrial Design Engineering
2628 BX Delft