Automotive Journal

More at auto-parts.quickfound.net “ELECTRICAL AND MAGNETIC PRINCIPLES INVOLVED IN THE OPERATION OF THE STARTING MOTOR – HOW ELECTRICAL ENERGY IS CONVERTED TO MECHANICAL ENERGY.” Public domain film from the National Archives, slightly cropped to remove uneven edges, with the aspect ratio corrected, and mild video noise reduction applied. The soundtrack was also processed with volume normalization, clipping reduction, and equalization. Split with MKVmerge GUI (part of MKVToolNix), the same software can recombine the downloaded parts (in mp4 format): www.bunkus.org US Army training film TF9-2331 see also: power steering: www.youtube.com drum brakes: www.youtube.com planetary gears: www.youtube.com en.wikipedia.org …The modern starter motor is either a permanent-magnet or a series-parallel wound direct current electric motor with a starter solenoid (similar to a relay) mounted on it. When current from the starting battery is applied to the solenoid, usually through a key-operated switch, the solenoid engages a lever that pushes out the drive pinion on the starter driveshaft and meshes the pinion with the starter ring gear on the flywheel of the engine. The solenoid also closes high-current contacts for the starter motor, which begins to turn. Once the engine starts, the key-operated switch is opened, a spring in the solenoid assembly pulls the pinion gear away from the ring gear, and the starter motor stops. The starter’s pinion is clutched to its driveshaft through an …
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