Forum Discussion
MEXICOWANDERER
Jan 28, 2016Explorer
This is the output curve of a 270-amp hairpin alternator.
Remember, the RPM is of the alternator rotor, NOT the engine. The pulley diameter differential allows the alternator to spin three-times faster than the engine. Therefore when you read 3,000 RPM on the chart it means the engine is at 1,000 RPM
THIS IS A FACTORY ALTERNATOR NOT AN AFTERMARKET!

Remember, the RPM is of the alternator rotor, NOT the engine. The pulley diameter differential allows the alternator to spin three-times faster than the engine. Therefore when you read 3,000 RPM on the chart it means the engine is at 1,000 RPM
THIS IS A FACTORY ALTERNATOR NOT AN AFTERMARKET!

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