The Talking Machine Forum — For All Antique Phonographs & Recordings

Is there a difference in those made for model A and model B Standards? In other words, are they interchangeable? I am wondering if the mandrel shaft gear is different on the 2/4 minute attachment for these models.

Just to be clear, I know that the original mandrel shaft gear is supposed to be removed and the new one installed. I am unsure if there is a different one for the model A Standard vs the model B.
Thanks,
Dave D

I see no one has responded to your question. I don't know the answer, but would be interested in anything people might have to say.

I have a green oak Standard Model A, and a tall case Model B and an original conversion kit and have used it on both machines with no problems.

Mike