Optimal linkage design for bicycle power transmission using symmetric four-bar

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Use of a symmetric crank-rocker four-bar linkage is presented as an alternative to the standard bicycle crank. With the coupler being the driven link, a kinematic and force-transmission analysis is presented. Results of constrained nonlinear optimization for geometric synthesis show a substantial improvement in mechanical efficiency compared to the state of the art. Dead-center positions are also eliminated. Potential applications to other linear-to-rotary power transmission devices, such as internal-combustion engines, are also discussed.

Original languageEnglish (US)
Title of host publicationProceedings of 2006 ASME International Design Engineering Technical Conferences and Computers and Information In Engineering Conference, DETC2006
Publication statusPublished - Nov 29 2006
Event2006 ASME International Design Engineering Technical Conferences and Computers and Information In Engineering Conference, DETC2006 - Philadelphia, PA, United States
Duration: Sep 10 2006Sep 13 2006

Publication series

NameProceedings of the ASME Design Engineering Technical Conference
Volume2006

Conference

Conference2006 ASME International Design Engineering Technical Conferences and Computers and Information In Engineering Conference, DETC2006
CountryUnited States
CityPhiladelphia, PA
Period9/10/069/13/06

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Keywords

  • Bicycle transmission
  • Linear-to-rotary power conversion
  • Optimal design
  • Symmetric coupler curves
  • Symmetric four-bar linkage
  • Transmission ratio

ASJC Scopus subject areas

  • Modeling and Simulation
  • Mechanical Engineering
  • Computer Science Applications
  • Computer Graphics and Computer-Aided Design

Cite this

Nelson, C. A. (2006). Optimal linkage design for bicycle power transmission using symmetric four-bar. In Proceedings of 2006 ASME International Design Engineering Technical Conferences and Computers and Information In Engineering Conference, DETC2006 (Proceedings of the ASME Design Engineering Technical Conference; Vol. 2006).