mackaholic

https://webbwheel.com/online_catalog_drums.php Here's another with a better search feature. Brad

Matt, I had pretty good luck on the Accuride website https://www.accuridecorp.com/sites/default/files/resources/2019-09/WE1.011 Rev 2 Gunite Brake Drum Products Catalog.pdf. It's little tough to find but this product catalog is great for trying to ID drums. The one I needed was obsolete as well so I ended up finding one that was the same diameter and mounting bolt circle. I did have to machine about 1/2" off the open end of the drum and drill out the bolt holes but it worked. Good Luck! Brad

Rob, These are Dayton drums, casting number 120129.

Found this door plate in an add on Truckpaper, https://www.truckpaper.com/listings/trucks/for-sale/list/manufacturer/mack/model/rs600. It was listed as an RS600. Just wondering if anyone has ever seen this or knows what this started as? Glider Kit?

Have you looked at the ATHS website? There's a guy in CA selling what he's advertising as an AC. It's actually an AB. Looks like it has an engine in it. https://aths.org/backlot/8787/1924-mack-ac/california/usa/trucks/

Those don't have spring brakes so the shoes might not be stuck to the drums, maybe. Back off the slack adjusters and see what happens! If they are stuck and you can get the slack adjusters backed off sometimes you can break the stuck shoes loose by hammering on the drums. Might need to use a large drift punch to get to them. Best of luck!

Not hydraulic, definitely early s-cam air brakes. With Wedge brakes the air pot bolts right to the backing plate. None of the operating mechanism is visible.

It seems thats been done a lot. Here's a link to an article about a Northern CA log trucker who had several of them. See page 29. https://rootsofmotivepower.com/wp-content/uploads/2018/03/Roots-Of-Motive-Power-Highline-2006-April-Vol-24-01.pdf. I wonder if any survived?

Just revisited this story. I don't suppose you have the serial # for the 53 LTL? My dad and I bought an LTL out of Oroville a couple years back that was supposed to be one of Roys trucks. I'd love to be able to confirm if it was or not. It originally had a 275 in it. Thanks, Brad

My dads 1920 AB parked next to a new 2020 Mack at the Snake River chapter ATHS show last weekend. Trucks have come a long way in 100 years!

Thanks Vlad, I have a couple in steel that I will be using if I can't find an aluminum piece. The are actually under an LTL now. Not sure if they are original or got swapped after the original ones broke. Just because the truck is an LTL and the aluminum parts were available doesn't mean Mack put them in.

Looking for one of these brackets in aluminum. Anyone have a spare?

Looked through several Mack calendars from the 80’s that I have. These pics are the only ones I could find that look like what you’re describing.

Saw this truck complete about 8 years ago. Couldn’t make a deal with the owner for it then. It got parted out since. I did end up with the cab though!