I pulled the drum off my 48 axle to remove the hoop steering arm. The inside of the drum, on the shoe surface, has a very regularly spaced rib pattern. It doesn't look like rivet wear. Is this normal and usable? Also, I think this drum needs the supporting collar, right? Thanks!
The drum surface shouldn't look like that so you should get it turned. Yes you will need the support plates/rings to use those wheels on the drums. They are available from Boling Brothers, Speedway, and others.
That drum is junk. Caused by some kind of crap that got in there. Don't use it. It's probably beyond the safety limit of .060" oversize already. I can tell it's too far oversize by the slight bevel on the inside outer edge that isn't there any more. Support rings are necessary to prevent cracked wheels.
Just an FYI in case anyone asks, but the hub and drum are 40-42, not 48. And I would surely measure the drum and even cut it a bit over .060 if need be. Finding replacements is expensive.
https://www.speedwaymotors.com/12-x-2-Brake-Drum-for-Bendix-Style-1937-48-Ford-Brakes,5847.html Eh, not terrible
Keep your receipt and I would check them with a run out gauge. I bought 2 sets of aftermarket drums from 2 different vendors for my '47 years ago, both sets were severely out of round. Next set I get I was going with the machined Lincoln drums and check them first (if I keep the stock stuff).
http://www.fordgarage.com/pages/swaging.htm I've been researching, the drums are swaged on each stud. Is there a way to reuse a drum after removing it?
Your link covers cutting the swage and re-swaging a new stud. I have used a holesaw to cut away the swage, but this would be good, too: https://www.snydersantiqueauto.com/product.htm?pid=976151&cat=41720
You will need new studs and size the holes in the hubs to accept the new studs…Do you have access to a Bridgeport mill or similar?
That drum does look like it is worn beyond what you should reasonably be able to turn it to clean it up. Still I'd have it measured with a gauge to make sure. As for trimming the swagging on the studs, there are several ways to do it depending on what you have to work with. Hole saw that just slips over the stud and hole saw type cutter that fits in a mill are two ways, either way you just cut far enough to cut the swagged out part of the stud way to be able to get the drum off.
I do! I've got an offer for some used drums, but they are already removed. I'll look into the studs. I've also got an offer for a set of F1 brakes when they put disks on theirs. But then wire wheels don't fit well... So many options.