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BS AU 50-1.6.8:2000

$86.31

Tyres and wheels. Tyres. Motorcycle tyres – Method of measuring tyre rolling circumference for new tyres under loaded conditions – Section 6: Motorcycle tyres Subsection 6.8: Method for measuring tyre rolling circumference for new tyres under loaded conditions

Published By Publication Date Number of Pages
BSI 2000 12
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This International Standard specifies a method for measuring the rolling circumference and revolutions per unit distance (kilometre) for new tyres, under loaded conditions, made for use on motorcycles and mopeds. The values obtained according to this method are not intended for use as levels of performance or quality.

This International Standard is applicable to all motorcycle and moped tyres designed and intended for use on the road.

NOTE Since most speedometers and odometers on motorcycles are activated from the front wheel, the test tyres will largely fall into sizes applicable for front wheel use. However, it is accepted that rear tyres will also be measured.

PDF Catalog

PDF Pages PDF Title
3 Motorcycle tyres�— Measurement of tyre rolling circumference�— Loaded new tyres
5 Foreword
7 Motorcycle tyres�— Measurement of tyre rolling circumference�— Loaded new tyres
1��� Scope
2��� Normative reference
3��� Terms and definitions
4��� Principle
8 5��� Measurement
5.1��� Test equipment
5.2��� Laboratory temperature
5.3��� Test speed
5.4��� Test equipment accuracy
6��� Tyre parameters
6.1��� Test load
6.2��� Tyre inflation pressure
6.3��� Test rims
9 7��� Procedure
7.1��� Prior to the test, the tyres shall be conditioned by running
7.2��� For future comparisons, record the overall diameter of the new tyres.
7.3��� After the tyres have been broken in as indicated in
7.4��� Adjust the inflation pressure to the value specified in
7.5��� Drive the drum at the test speed for approximately
7.6��� Record the number of revolutions (and portions thereof) of the test tyre,
7.7��� Repeat the measurements of
7.8��� If the number of revolutions on the second run differs from that recorded in the first run…
8��� Expression of results
8.1��� Tyre rolling circumference
8.2��� Revolutions per unit distance
10 Bibliography
BS AU 50-1.6.8:2000
$86.31