Thread: Unsprung weight on a Series 2A

I doubt whether the difference is noticeable. In fact, I doubt there is a significant difference in weight between the wide and narrow drums, and the difference in weight between the shoes and backing plates would be pretty small. Certainly, there is a difference in weight between the 10" and 11" brakes, but compared to the overall unsprung weight it would be pretty small.

I very much doubt that the extra width of the six cylinder drums is justified for the swb.

John

Originally Posted by JDNSW

I very much doubt that the extra width of the six cylinder drums is justified for the swb.

I tend to agree, but it also comes down to what is available at the time. Many/most components are available new, and the prices do not vary much between 4cyl and 6cyl, but I've yet to find a source of new backplates. So if I can find a 4 cylinder donor set I'll use it, otherwise....

Originally Posted by Warb

I tend to agree, but it also comes down to what is available at the time. Many/most components are available new, and the prices do not vary much between 4cyl and 6cyl, but I've yet to find a source of new backplates. So if I can find a 4 cylinder donor set I'll use it, otherwise....

Not surprised that you can't find new backing plates, but there should be plenty available s/h - they are not something that either wears or rusts. About the only thing that goes wrong with them is the adjuster, and you can buy replacements for them.

John