Pulley - Dual V-Belt

$3.00 $15.00

Smaller pulley will spin the alternator faster at idle to create maximum output.  A larger pulley will allow the engine to rev higher without driving the alternator to fast.  Large 3G alternators are safe to ~15,000RPM max.  Single V-Belt will slip over 100Amps.

Alt RPM = Engine RPM x Crank Pulley Diameter ÷ Alt Pulley Diameter