A solenoid engine is a curiosity of the electrical world. By all measures, using electricity to rotate something can be done almost any other way with greater efficiency and less hassle.

The relay/solenoid is the switch that engages the starter motor. That sends full battery power to the starter motor, engaging a pinion gear (also referred to as a Bendix Drive) that meshes with ...

This loss of power reduces the solenoid’s power to engage the starter motor and maintain the hold inside of the starter solenoid. This will result in the common “click-click-click” sound of ...

But this isn’t an internal combustion engine, it gets its power from electric solenoids. We featured his single-cylinder build about a month ago, and since then he’s been busy with this ...