Re: Brake Drum ID help please
Edited by DBDBrian on July 24, 2018, 4:12 pm
Hi Mark, A/B series rear chains are not 1/2". The pitch is 5/8" by either 1/4" or 3/8" width. I don't quite understand your description of the brake plate, the plate usually has the the lip, which runs in the grove in the drum, creating a labyrinth seal.
Rex may well be right with his thoughts, I am not over familiar with the plunger set up. I thought the plunger drum had the larger centre hole, as picture. But BSA did utilize many parts.
Can it not be modified to fit your machine ?
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