DC Motor System for Car Battery: Can I Achieve Inexpensively?

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A single-phase AC motor system currently operates at 2980 RPM, drawing 5.6 amps at 240V with 87% efficiency, providing approximately 1 horsepower. Transitioning to a DC motor powered by a 12-volt car battery is impractical, as it would require over 60 amps, quickly draining the battery and potentially causing damage. Using an inverter for the original AC system is suggested, but the feasibility depends on the duration of operation before recharging. The discussion highlights the challenges of achieving similar power output inexpensively with a DC motor. Overall, running a 1 hp motor on a car battery is not a viable option without significant drawbacks.
seamuscostello
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Hi, I have a single phase ac motor system currently working at 2980rpm, 5.6 amp, 50 hz, 240v, efficiency 87% giving approx 1 horse power.

Can I have a similar powered dc motor run off a 12 volt car battery. Can this be achieved inexpensively?

Could I use an inverter for original system? Any info/suggestions appreciated.
 
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Hi seamuscostello! http://img96.imageshack.us/img96/5725/red5e5etimes5e5e45e5e25.gif

One horsepower is 746 watts. At 12v that equates to drawing well over 60 amps from your battery. Your battery will be flat within a minute or two, and probably damaged. Sorry, it was a good plan though.

How long would you be needing to run a 1 hp motor before recharging the batteries?
 
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