Keep up on go kart maintenance with an analog hour meter or a “Tiny Tach” tachometer/hour meter. Your go kart needs to be serviced after a certain number of running hours, and the hour meter is a great way to keep track of each kart in your fleet. The “Tiny Tach” also allows you to set engine rpms and kart speed with ease. Use this handy chart to determine go kart speed based on gearing and engine rpm.