How to Count RPMs for a Cycle

RPM is the abbreviation for revolutions per minute. This measurement is important for a number of mobile transports and machinery that involve spherical objects that turn to create movement or power a machine. RPMs for bicycles can be measured to determine the distance that a cyclist will travel or has traveled in a certain amount of time. Standards for RPM cycle measurements also ensure that the body is not overly taxed during cycling.

Things You'll Need

  • Watch or stopwatch with second measurements
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Instructions

    • 1

      Mount your bicycle and begin peddling. When you have reached a normal performance level, pull out the clock or stopwatch.

    • 2

      Watch the stopwatch or clock until it reaches a point that is easy to remember (for example, when the second hand reaches the zero mark). Coordinate your peddling so that your right foot is at the highest peddling point when the stopwatch reaches the point which you have chosen.

    • 3

      Peddle the cycle for 10 seconds as timed on the clock or stopwatch. At the same time, count the number of times that your right foot reaches the highest peddling point.

    • 4

      Stop peddling the bicycle after you have obtained an accurate count.

    • 5

      Multiple your count by six to obtain your RPM measurement. If you would like to determine the distance traveled you can take your RPM measurement and multiply it by the diameter of your bike tire. Divide 63,360 by your calculated value. The value you get will be the approximate number of minutes necessary to travel one mile.