[rotorwrench]

Keep in mind that a 1928 model A would have has a powerhouse generator originally.

The later Autolite designs should still work to align the belt. The generators of the Model B era were a bit different than the model A and one way is the lack of the terminal protruding out the case. In some cases, the little insulator bushing was deleted to exit a wire but the two wire set up may require a larger exit in the case. If the terminal insulator will still fit in the case then A person can get the parts to use a stud terminal. The 3-brush generator really didn't need the ground wire to exit the case but different types of cut outs were available that used the ground wire. These were the two stage current type set ups that had a cut out and a two stage relay to up the current output when the headlights were used. They are oval shaped instead of just a round can design. These were not available in the model A era but were available in the model B era. Cars equipped with a radio set had them.

Smaller pulleys would be used in applications where the engine is run at lower rpm. This keeps the generator rotational speed in the sweet spot for low rpm engine operation. Larger diameter sheaves are for higher rpm operation to slow the rotational rpm of the generator.