[Steve C.]

"At 4500RPMs the alternator averaged over the 4 tests a measily 1.28 hp loss."

http://www.carnut.com/ramblin/dyno.html


"Since the 1950s race cars ran on battery only for drag races and short duration round track races ( where magnetos we not permitted). This saves about 4.5 Horsepower on typical V8 engine. Alternators and earlier generators are notoriously inefficient. It takes about 1 HP to make 25 Amps in a perfect world. So dynometer results since the 1960s say you gain about 4.5 HP with the alternator removed."

https://www.physicsforums.com/thread...torque.693576/
Reference: https://www.physicsforums.com/thread...torque.693576/

"Spending the money on a high-quality alternator made for a racing application will save you a lot of headaches on race day."

"You want to make sure the alternator you select can charge well at idle and low RPM. Think about it: how much time do you spend with the car idling in the staging lanes and driving through the pits? That's the time you want the alternator doing its best work."

https://www.dragzine.com/tech-storie...racket-racing/


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