2026-09-21T01:08:43Zhttps://dspace.mit.edu/server/oai/requestoai:dspace.mit.edu:1721.1/987822022-01-13T07:54:05Zcom_1721.1_7582com_1721.1_7581col_1721.1_131024
Daniel Frey.
Falcone, Sara Elizabeth
Massachusetts Institute of Technology. Department of Mechanical Engineering.
Massachusetts Institute of Technology. Department of Mechanical Engineering
2015-09-17T19:11:41Z
2015-09-17T19:11:41Z
2015
2015
http://hdl.handle.net/1721.1/98782
921140891
Thesis: S.B., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2015.
Cataloged from PDF version of thesis.
Includes bibliographical references (page 39).
This thesis analyses the front wheel of the Leveraged Freedom Chair (LFC) an all-terrain, off-road wheelchair with two distinct models: one for the developing world and one specifically for American riders. The functional requirements of performance and price, were designated by the start-up company Global Research Innovation and Technology (GRIT), which makes the LFC. This study includes comparisons between the original rubber wheel, which is currently being used as the front wheel of the LFC, and alternative wheels available for purchase. The goal was to find a new wheel which could be implemented for future manufacturing to increase the lifespan of the LFC, improve the ride quality and efficiency of production. Based on performance it is concluded that a pneumatic wheel of comparable geometry to the original rubber wheel is the best alternative for the American chair where maintenance is more routine and replacement parts and service are readily available. For the developing world future work is necessary to either improve the quality of the original rubber wheel or select a low cost, low maintenance alternative.
by Sara Elizabeth Falcone.
S.B.
39 pages
eng
Massachusetts Institute of Technology
M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission.
http://dspace.mit.edu/handle/1721.1/7582
Mechanical Engineering.
Design of a rugged wheel for application in the Leveraged Freedom Chair
Thesis
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<Abstract>This thesis analyses the front wheel of the Leveraged Freedom Chair (LFC) an all-terrain, off-road wheelchair with two distinct models: one for the developing world and one specifically for American riders. The functional requirements of performance and price, were designated by the start-up company Global Research Innovation and Technology (GRIT), which makes the LFC. This study includes comparisons between the original rubber wheel, which is currently being used as the front wheel of the LFC, and alternative wheels available for purchase. The goal was to find a new wheel which could be implemented for future manufacturing to increase the lifespan of the LFC, improve the ride quality and efficiency of production. Based on performance it is concluded that a pneumatic wheel of comparable geometry to the original rubber wheel is the best alternative for the American chair where maintenance is more routine and replacement parts and service are readily available. For the developing world future work is necessary to either improve the quality of the original rubber wheel or select a low cost, low maintenance alternative.</Abstract>
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