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FS LARGE DRUM ROCKY MOUNTAIN BRAKE SET (SOLD)
Posted: Thu Dec 11, 2025 3:00 pm
by Mark Chaffin
One pair of Rocky Mountain Brakes. Linings look pretty good. Price WAS $450 NOW $400 plus actual shipping. Mark Chaffin (951)805-0928
Re: FS LARGE DRUM ROCKY MOUNTAIN BRAKE SET
Posted: Fri Dec 12, 2025 11:12 am
by Original Smith
Those are Jack Sunderlin reproductions.
Re: FS LARGE DRUM ROCKY MOUNTAIN BRAKE SET
Posted: Fri Dec 12, 2025 12:44 pm
by big2bird
Original Smith wrote: ↑Fri Dec 12, 2025 11:12 am
Those are Jack Sunderlin reproductions.
I was thinking that as well.
Still clearly a deal.
Re: FS LARGE DRUM ROCKY MOUNTAIN BRAKE SET
Posted: Fri Dec 12, 2025 12:46 pm
by Mark Chaffin
Please elaborate. Would be nice to know what to look for in the future.
Re: FS LARGE DRUM ROCKY MOUNTAIN BRAKE SET
Posted: Fri Dec 12, 2025 12:49 pm
by big2bird
Post a picture where the fixed post is on the end. Originals have adjustment, Jacks were fixed.
Re: FS LARGE DRUM ROCKY MOUNTAIN BRAKE SET
Posted: Fri Dec 12, 2025 12:58 pm
by big2bird

- Cam Adjustment-1.JPG (46.68 KiB) Viewed 563 times
Cam adjusts for drum in or out. On Jack's, you shim the bracket in or out.
Re: FS LARGE DRUM ROCKY MOUNTAIN BRAKE SET
Posted: Fri Dec 12, 2025 4:33 pm
by Mark Chaffin
Good to know. Thank you Jeff.
Re: FS LARGE DRUM ROCKY MOUNTAIN BRAKE SET
Posted: Sat Dec 13, 2025 1:14 pm
by Original Smith
Jack didn't put those cams on, because he didn't know what the purpose of them is!
Re: FS LARGE DRUM ROCKY MOUNTAIN BRAKE SET
Posted: Sat Dec 13, 2025 1:21 pm
by Chris Instness
Does anyone have a set of drums for these? Do they use the 11 3/4” pressed steel drum or would this set have come with cast drums?
Re: FS LARGE DRUM ROCKY MOUNTAIN BRAKE SET
Posted: Sat Dec 13, 2025 4:15 pm
by TRDxB2
Chris Instness wrote: ↑Sat Dec 13, 2025 1:21 pm
Does anyone have a set of drums for these? Do they use the 11 3/4” pressed steel drum or would this set have come with cast drums?
If these are for large stock drum, 11-1/4in, on the 1926-27. The 1909-1925 small drums need the larger outer drums (11-3/4" diameter) that are used in conjunction with original stock drum.
Re: FS LARGE DRUM ROCKY MOUNTAIN BRAKE SET
Posted: Sat Dec 13, 2025 4:49 pm
by speedytinc
Are you sure about that?? Looks like the bracket attaches @ the small drum brake shoe bolt.
Re: FS LARGE DRUM ROCKY MOUNTAIN BRAKE SET
Posted: Sat Dec 13, 2025 5:46 pm
by big2bird
Jack only made small drum RM. For 26-27 he made the AC units.
They used cast iron drums.
Re: FS LARGE DRUM ROCKY MOUNTAIN BRAKE SET
Posted: Sat Dec 13, 2025 5:50 pm
by big2bird
Re: FS LARGE DRUM ROCKY MOUNTAIN BRAKE SET
Posted: Sat Dec 13, 2025 5:50 pm
by big2bird
Re: FS LARGE DRUM ROCKY MOUNTAIN BRAKE SET
Posted: Sat Dec 13, 2025 6:22 pm
by Mark Chaffin
According to the "sperts", these brakes are older reproduction brakes that require drums. As such, price has been reduced. Thanks all for your input.
Re: FS LARGE DRUM ROCKY MOUNTAIN BRAKE SET (REDUCED)
Posted: Sat Dec 13, 2025 6:33 pm
by speedytinc
Well worth the price. These brakes will lock the rear wheels forward & reverse!
Get a set of Bud Williams drums & you 're golden.
I am surprised they haven't sold yet. If I didnt already have a spare set, they'd be mine.
Re: FS LARGE DRUM ROCKY MOUNTAIN BRAKE SET (REDUCED)
Posted: Sat Dec 13, 2025 7:18 pm
by Mark Chaffin
Going to Drew. Thanks all.