eprintid: 15872 rev_number: 23 userid: 1343 importid: 889 dir: disk0/00/01/58/72 datestamp: 2012-10-15 19:26:11 lastmod: 2019-02-02 14:56:40 status_changed: 2012-10-15 19:26:11 type: article metadata_visibility: show contact_email: rcooper@pitt.edu item_issues_count: 0 eprint_status: archive creators_name: Zipfel, E creators_name: Olson, J creators_name: Puhlman, J creators_name: Cooper, RA creators_email: creators_email: creators_email: creators_email: RCOOPER@pitt.edu creators_id: creators_id: creators_id: creators_id: RCOOPER title: Design of a custom racing hand-cycle: Review and analysis ispublished: pub divisions: sch_hrs_rehabscitech full_text_status: public abstract: Purpose. This paper describes the design, manufacture and evaluation of a custom hand-cycle with a Delta-style frame and fork steering. The state of hand-cycle design and future design directions are also examined. Method. The design of the custom hand-cycle was based on these criteria: Light weight, aerodynamics, climbing ability, ergonomic fit and the user's specific needs. We designed and built a custom hand-cycle for one expert user, therefore, the user's personal needs were key design drivers. The hand-cycle was evaluated by the user over three years of use. Results. During three years of evaluation and over 8000 km of use there were two frame failures: i A crack propagated around one of the tubes connecting the mainframe tube to the headset tube; and ii a crack propagated around the circumference of the curved part of the main frame tube directly behind the seat. The first failure was repaired and after the second, the device was retired. The evaluation of this design serves as a basis for a new set of design criteria. Conclusions. Large amounts of frame flexion can indicate eventual plastic deformation and failure. Future hand-cycle designs should see the use of more advanced materials, finite element analysis software, and continued incorporation of bicycle technology and design innovation. © 2009 Informa UK Ltd All rights reserved. date: 2009-12-02 date_type: published publication: Disability and Rehabilitation: Assistive Technology volume: 4 number: 2 pagerange: 119 - 128 refereed: TRUE issn: 1748-3107 centers: cen_other_herl id_number: 10.1080/17483100802011021 pmid: 18608443 mesh_headings: Acceleration mesh_headings: Bicycling mesh_headings: Biomechanics mesh_headings: Disabled Persons--rehabilitation mesh_headings: Equipment Design mesh_headings: Equipment Safety mesh_headings: Hand--physiology mesh_headings: Humans mesh_headings: Sensitivity and Specificity mesh_headings: Sports mesh_headings: Stress, Mechanical citation: Zipfel, E and Olson, J and Puhlman, J and Cooper, RA (2009) Design of a custom racing hand-cycle: Review and analysis. Disability and Rehabilitation: Assistive Technology, 4 (2). 119 - 128. ISSN 1748-3107 document_url: http://d-scholarship-dev.library.pitt.edu/15872/1/licence.txt