A term used to describe how fast a motor is spinning. Also known as “revs.” (Compare Tachometer).


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  1. Motorcycle Rev Limiter | Motorcycle-Glossary.com on June 19, 2008 6:07 am

    [...] known as an “RPM Limiter”: A rev limiter reduces the power of an engine when a certain RPM is reached.  As an engine safety device, a rev limiter is placed in the electronic circuitry to [...]

  2. Port Timing : Motorcycle-Glossary.com on May 18, 2007 2:22 pm

    [...] or uncovered by the piston. Port timing can be modified to enhance a 2-stroke’s power and RPM [...]

  3. Ignition Timing : Motorcycle-Glossary.com on May 14, 2007 12:13 pm

    [...] by an engine control unit use a computer to control the timing throughout the engine’s RPM range. Older engines that use mechanical spark distributors rely on inertia (by using rotating [...]

  4. Dynamometer (”Dyno”) : Motorcycle-Glossary.com on May 7, 2007 1:15 pm

    [...] machine used to measure torque and rotational speed (RPM) which can be used to calculate the mechanical power (such as horsepower) produced by an [...]

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