Use of The Counter For Measuring Road Race Courses
To measure road race courses the counter is fitted to a bicycle between the left fork leg and the front wheel. The tab or tabs on the large ring gear engage with the spokes, thus providing drive to the Veeder-Root counter.
In use the bicycle must first be calibrated by riding between marks on a straight section of road whose separation has been accurately measured by steel tape. A calibration can then be calculated in terms of counts per kilometer. Next the bicycle is ridden over the race course to determine its length. Finally the bicycle is recalibrated by riding again over the calibration distance. This is done to check for changes in bicycle wheel diameter due to temperature changes, air leakage and other causes.
Read more about this topic: Jones Counter
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