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Bill Marrs Bill Marrs is offline
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Default Gas powered battery charger.


"Wes" wrote in message
...
"Mach1" wrote:

Build a good cage around the alternator. At 10,000 rpm there could be
pieces going into earth orbit.


The ratio of the crank pulley to alternator pulley on cars is ~2:1.
Almost all IC auto
engines can hit 5000 rpm before rev limiting takes place.

Just out of curiosity, has anyone ever had an alternator blow up from rpm?

Wes


Saw it happen on a 55 chevy street drag car. Missed a shift and it fragged
the alternator
pulley. Threw 4 or 5 chunks through the fiberglass hood. Alternator RPM
was probably
15,000 to 18,000 when it de-constructed.