bartamos On those alternators,had a pipe dream of a sheave with an interal planetary gear set to speed up the alternator rotor so it would prime and charge at idle,like on an AD or a tractor. Think that would work?? As I said I have done it with belts on a 51 216 original 3600 works good but fan blade barely clears it. In my build never even thought of that but for once it cleared and worked !!
In a planetary gear set, one of the components has to be held stationary (carrier, ring gear, or sun gear) in order to change speed. That might be tough to do on an alternator. An easier approach to speeding up an alternator is to just use a smaller pulley on the alternator.
