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Starters are brute series-wound motors. They are only capable of operating for a few seconds without overheating. Interestingly, they were originally developed from mechanical cash register motors, because Charles Kettering observed that while cash registers needed a burst of power they didn't have a continuous running mode, and since the cash register company was located in Dayton, Ohio, DELCO, the Dayton Electric Company, was formed. A starter motor typically generates about 10 horsepower. A continuously-operating 10 horsepower motor would be about as heavy as your whole engine.

People who convert old cars from 6 volts to 12 volts usually don't bother to change the starter, sometimes just the solenoid and sometimes not even that. The motor itself works just fine on the higher voltage as long as it isn't stalled or run too long. The current draw of a series motor is a direct function of the motor speed.

<blockquote data-quote="Tweety" data-source="post: 293923" data-attributes="member: 619">Starters are brute series-wound motors.&nbsp; They are only capable of operating for a few seconds without overheating.&nbsp; Interestingly, they were originally developed from mechanical cash register motors, because Charles Kettering observed that while cash registers needed a burst of power they didn&#039;t have a continuous running mode, and since the cash register company was located in Dayton, Ohio, DELCO, the Dayton Electric Company, was formed.&nbsp; A starter motor typically generates about 10 horsepower.&nbsp; A continuously-operating 10 horsepower motor would be about as heavy as your whole engine.People who convert old cars from 6 volts to 12 volts usually don&#039;t bother to change the starter, sometimes just the solenoid and sometimes not even that.&nbsp;&nbsp; The motor itself works just fine on the higher voltage as long as it isn&#039;t stalled or run too long.&nbsp; The current draw of a series motor is a direct function of the motor speed.</blockquote>

[QUOTE="Tweety, post: 293923, member: 619"] Starters are brute series-wound motors. They are only capable of operating for a few seconds without overheating. Interestingly, they were originally developed from mechanical cash register motors, because Charles Kettering observed that while cash registers needed a burst of power they didn't have a continuous running mode, and since the cash register company was located in Dayton, Ohio, DELCO, the Dayton Electric Company, was formed. A starter motor typically generates about 10 horsepower. A continuously-operating 10 horsepower motor would be about as heavy as your whole engine. People who convert old cars from 6 volts to 12 volts usually don't bother to change the starter, sometimes just the solenoid and sometimes not even that. The motor itself works just fine on the higher voltage as long as it isn't stalled or run too long. The current draw of a series motor is a direct function of the motor speed. [/QUOTE]

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