Wheel turning strength for four wheel designs

Mark L. McMulkin, Jeffrey C. Woldstad, Paul B. McMahan, Timothy M. Jones

Research output: Contribution to journalConference articlepeer-review

3 Scopus citations


This paper reports the result of an experiment to evaluate the isometric wheel turning strength 12 mate and 12 female subjects using four different wheel designs. Three of the wheels investigated were new designs developed specifically for this study, while the fourth was a wheel currently used on many railroad car hand breaks. The new designs considered were a cylindrical tube (4.3 cm in diameter), a cylindrical tube (2.5 cm in diameter) with spheres mounted along the edge, and a circular zig-zag design. Strength data were collected using a mock-up of the ladder and platform arrangement found on most railroad hopper and box cars. The task simulated the final tightening exertion required to secure railroad car hand brakes. Strength capabilities were measured using two methods: 1) a three second average during a six-second trial; 2) the peak reached on a separate trial in which subjects did not sustain an exertion.

Original languageEnglish (US)
Pages (from-to)730-734
Number of pages5
JournalProceedings of the Human Factors and Ergonomics Society
StatePublished - 1993
Externally publishedYes
EventProceedings of the 37th Annual Meeting of the Human Factors and Ergonomics Society - Seattle, WA, USA
Duration: Oct 11 1993Oct 15 1993

ASJC Scopus subject areas

  • Human Factors and Ergonomics


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