I am rebuilding the transmission of a fast Model T motor which has blown both the clutch and the low speed drum. In pulling it apart I found the brake drum has a flaw in that the ribs down the side do not go all the away to the front, allowing a couple of disks to get trapped and the small disk between them damage the center tabs. In the picture below you can see that the ribs do not go all the way to the bottom of the brake drum allowing a couple of the disks not to rotate with the drum.
Anyone seen anything like this before?
See your other string, it's early with no spacer so the disks have gotten stuck under the lugs.
An early drum that requires a special spacer ring for the clutch. Sorry, I don't have a picture of one.
The special spacer ring is called a "distance plate". I did a quick search on the forum for a picture of one, but couldn't find one.
Check with Dave Huson, he may have a distance plate that he can sell you.
I have one here for sale, Bob
Tony sent you a pm, Bob
Glad I could help you out