Classic/Antique Car Repair: model a gen, model a ford, car jack

Question
To get more or amps with band removed the 3rd brush is moved clockwise 0r counterclockwise ???

Answer
It goes up to decrease the output and down to increase it.  I guess this means up is opposite the rotation.  
Better yet, get a 6 volt alternator.  Works great and does away with the cutout.  We are all running the alternator, and  they are trouble free.
You should also get the Model A Ford mechanics handbook.  About $35 and it tells you all about the A and how to fix it.  Get it from MARC or any of the suppliers.  Page 1-193 talks about the generator.
good luck and have fun with that car.
jack