Tachometer

Technology / Motorcycle / Tachometer: A gauge that measures how fast an engine is spinning. The measurement is usually expressed in revolutions per minute (See RPM). Also: "tach."

Pin It

Technology / Motorcycle / Pin It: To go full throttle: Reference to pinning the tachometer and/or the speedometer needle all the way to the right of the gauge. "Coming out of the last corner, I just pinned it and won." MORE

Redline

Technology / Motorcycle / Redline: The maximum number of revolutions per minute an engine can run before damage occurs. The name is derived from the actual red line manufacturers typically put on the tachometer. MORE

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