The new JR was used by Hugh Jones, Pete Riegel and Tom Riegel on a measurement of part of the Flora London Marathon. All recorded about 20 km of riding with no problems. Riding included several bumpy cobblestone segments encountered enroute to the measured area.
Tom asked Hugh to leave his counter on the bike ALL the time instead of taking it off between measurements. When it finally wears out Hugh will return it to Tom for a free replacement. Hugh uses his bike for general transportation around London. As of April 11 Hugh had accumulated about 175 miles of London city riding on the counter with no reported problems.