ANALYSES OF RIDING TESTS FOR EVALUATING THE WET BRAKING PERFORMANCES OF BICYCLES
The Consumer Product Safety Commission has expressed interest in the development of a riding test method for evaluating the braking performances of bicycles in wet weather. In this report three different testing approaches for caliper-braked bicycles are examined using kinetic analyses, a review of the literature, and an evaluation of available domestic and foreign test results. On the basis of the findings it is recommended that the riding test include the intentional wetting of both the bicycle brakes and the test pavement; the former to obtain meaningful results and the latter to enhance the repeatability of the test results. A tentative pass-fail criterion is also offered, based on a maximum wet stopping distance which, at this time, appears to be generally attainable only with bicycle wheels having aluminum-alloy rims. Error analyses of the test methods are presented.
National Bureau of StandardsInstitute for Material Research
- Mordfin, L
- Publication Date: 1977-4
- Pagination: 33 p.
- TRT Terms: Aluminum; Bicycles; Brakes; Braking; Consumer protection; Friction; Moisture content; Pavements; Performance tests; Road tests; Safety; Standards; Testing; Tires
- Uncontrolled Terms: Wet conditions
- Subject Areas: Highways; Pavements; Safety and Human Factors; Vehicles and Equipment;
- Accession Number: 00175168
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: NBSIR-78-1416 Final Rpt.
- Files: TRIS
- Created Date: Apr 26 1978 12:00AM