ok. so heres a question. is it the regulator that limits the amps output of the generator?
Yes, it's the regulator that limits the current output (amps) as well as voltage. In the regulator there is a coil that is wound with heavy gauge wire, all the output of the generator armature wire flows thru this coil. If the current goes above a safe level the coil pulls the contacts open and that places a resistor in series with the field causing the generator output to drop of momenterly. Once the current drops the contact closes again and the output increases, this happens about 20 to 30 times a second the contacts actuly vibrate.
This usuly only happens at high RPM's because as we well know a generator at idle cannot even keep up with the current draw of the headlights.
My 56 has an alternator as I am planing on adding A/C and electric radiator fans, does not help you 55 guys who are 6 volt. The 6 volt system in a car with only factory accessorys can be made to work, just needs larger gauge cables than you find in an auto store.
If anyone wants to know how to do the alternator conversion I had prevously posted it here, I used an alternator from a Ford Escort (70 amps) and it bolts up without to much trouble. Do a search for it, If you cannot find it I will post it again.