T Drive ‘Plates’

[George House]

I think that’s what you call them. And I have several of two different diameters. Will someone please advise me which is the ‘26-‘27 and would the other be appropriate for ‘09-‘25 ? Thank you…

[Dan Hatch]

These are for the brake drums correct?
26/27 wide drums the plate fits inside the drum.
Narrow drum plates have a lip on them that fits into the drum.
Hope this helps.

[speedytinc]

The inner plates are the same, except for the one extra thick disk for brass era clutches.
The larger OD disks have outer notches to fit into the 6 brake drum tabs. The drums with the removable tab shoes are cut flat on all 6 outer edges between the notches. Earlier outer disks have only 2 of those flat edges cut. The 26-7 outer disks will fit all years. the earlier disks wont fit the later, shoed drums.
You cant say "26-7 outer disks". In early wide drum production, the replaceable shoes were not used. Some time in 26 all wide drums & replacement narrow drums got the replaceable shoes.

[Dan Hatch]

I was thinking about the driven plates. The ones that go on to the brake drum. The three fingers mount on them.

Sounds you were asking about the clutch disc.

[Jim11787]

Here is a picture of two on the left for a 26/27. I just bought the one on the left from Jim Golden on the site.

[speedytinc]

In that case, 26-7 (wide drum) are smaller diameter. They fit into & under the drum surface.
Narrow are larger in diameter. The outer edge has a step & is actually part of the drum surface.
The larger/narrow output plate can be cut down & bolt holes modified a bit to be used on a wide drum.
So, the mounting hole pattern is slightly different. The wide drum plate has/had smaller holes for the smaller 3 finger pins.
There is also an odd/rare version that fits the narrow, replacement drum for the replaceable shoes. with a different hole pattern & lipped edge.

[George House]

Thanks for the information Dan, John and Jim.