[Glen]’s investigation revealed a 3-phase synchronous motor inside the tach. The motor drives a permanent magnet, which spins inside a copper cup attached to the needle on the tach’s face.

Without having a tachometer we wouldn’t be able know where the ’67 was shifting, or how many revs it was turning going through the traps—not to mention what it was revving at freeway speeds.

Sunpro's Sport ST Speedometer is a perfect match for the Sport ST tachometer and panel gauges, with a unique "soft touch" outer bezel and smooth finish, adding a sporty touch to today's new-era ...

ServoTek Products Inc. announced the successful application of its TachSyn Series brushless DC tachometer/commutator within industrial motor speed monitoring applications.