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View Full Version : V8 Rear Finned Drums to Flanged Axle Fit?



61Lark
08-29-2016, 01:54 PM
Does anyone know if the rear finned 10" drums (1558905) that are available from the Stude Vendors will fit the Fairborn Flanged axles? My go to supplier, Chuck Collins, is on vacation this week and SI didn't know what I was talking about when I said flanged axles. Is there another vendor that stocks these drums?

StudeRich
08-29-2016, 02:13 PM
The Stude. Flanged Axle Drums fit the stock Studebaker Flanged Axle setup, we have posts here somewhere or on Bob Johnstone's Website about how to Machine the Backing Plate and or the Stock tapered Axle Drums if I remember it correctly.

Why not go to "THE SOURCE", and ask Phil Harris at Fairborn Studebaker, the actual source of the Kit?

61Lark
08-29-2016, 02:21 PM
The Stude. Flanged Axle Drums fit the stock Studebaker Flanged Axle setup, we have posts here somewhere or on Bob Johnstone's Website about how to Machine the Backing Plate and or the Stock tapered Axle Drums if I remember it correctly.

Why not go to "THE SOURCE", and ask Phil Harris at Fairborn Studebaker, the actual source of the Kit?

The stock Stude flanged axle drums do not fit the Fairborn axles. The Fariborn kit is designed to use the tapered drums once the hubs have been removed. However, some late tapered drums had a smaller center hole that will not work with Fairborn axles. I have been working with Phil Harris on this. The issue isn't with the kit, it's with the drums.

StudeRich
08-29-2016, 02:43 PM
OK, you already knew the question I "thought" you were asking from your tittle: Do the Studebaker Flanged Axle Drums fit the Fairborn Kit Axles?

Obviously without knowing what that 1558905 Part Number is or fits or looking it up, I am sorry, I could not tell you were talking about TAPERED AXLE DRUMS! :ohmy:

Since all Rear Hubs have been the same size forever, I don't see how there could be different size center holes in the "Original NOS" Drums, unless you got ahold of some FLANGED AXLE DRUMS!

Now if you had some 11" Finned "REPRODUCTION" Drum Only "REAR" units, I am pretty sure those are made for the Hub/Drum Assy's. for the 11" FRONT drum replacements, and very well could have the wrong center hole for the Rear Fairborn Axles and possibly should not have been "Sold" as Rears.

61Lark
08-29-2016, 03:15 PM
Since all Rear Hubs have been the same size forever, I don't see how there could be different size center holes in the "Original NOS" Drums, unless you got ahold of some FLANGED AXLE DRUMS!


My drums were the original tapered axle drums that I removed the hub from myself. Did Studebaker put some tapered axle hubs on flanged drums in the Fall of 63? I don't know. What I do know is that they definitely used some drums on the tapered axle cars that had a smaller center hole and that these drums don't work with the Fairborn kit.

I don't want to order a new set of drums and have the same issue. Is there another supplier that stocks 10" finned rear drums for a tapered axle?

StudeRich
08-29-2016, 03:36 PM
There are many of us that have bought and "Have" NOS Hub & Drum Assy's and Drum Only Parts from the Original Studebaker Automotive Sales Corp. in the 1970's to early 1990's, but the word "Stocks" as in: "a Pile for Sale" would not apply, since they are in very limited Supply and "irreplaceable keepers". :(

studegary
08-29-2016, 04:41 PM
My drums were the original tapered axle drums that I removed the hub from myself. Did Studebaker put some tapered axle hubs on flanged drums in the Fall of 63? I don't know. What I do know is that they definitely used some drums on the tapered axle cars that had a smaller center hole and that these drums don't work with the Fairborn kit.

I don't want to order a new set of drums and have the same issue. Is there another supplier that stocks 10" finned rear drums for a tapered axle?

Can't you simply ask for a measurement of the center hole before ordering replacement drums from anyone?

61Lark
08-29-2016, 04:45 PM
Can't you simply ask for a measurement of the center hole before ordering replacement drums from anyone?

Chuck is on vacation and SI was supposed to get back to me. Is there a third or forth vendor for these parts?

63t-cab
08-29-2016, 06:09 PM
If I'm understanding your question/and have My act together "Memory":confused:. there's Two hole sizes,and the Flange Axle Drums have the bigger hole as well as a slight beveled inner edge.


The stock Stude flanged axle drums do not fit the Fairborn axles. The Fariborn kit is designed to use the tapered drums once the hubs have been removed. However, some late tapered drums had a smaller center hole that will not work with Fairborn axles. I have been working with Phil Harris on this. The issue isn't with the kit, it's with the drums.

52 Ragtop
08-29-2016, 07:47 PM
The tapered axle drum has a smaller hole, the flanged axle has a larger hole, which centers it on the axle. I am sure that with machine work, one could be made to slip over the larger center hub.

Jim

karterfred88
08-29-2016, 09:04 PM
The tapered axle drum has a smaller hole, the flanged axle has a larger hole, which centers it on the axle. I am sure that with machine work, one could be made to slip over the larger center hub.

Jim
Not to steal a thread--but what is the size (diameter) of the centering hub on the Fairborn conversion axles??

61Lark
08-29-2016, 09:26 PM
3.104" that is the OD of the sheetmetal ring that is staked to the hub.

WCP
08-29-2016, 10:19 PM
Nominal 3 1/8" centre hole is what is required for the Fairborn kit. As I recall, the '63-64 drums have this size. Earlier drums have smaller holes - 2 7/8" or something like that. Check the parts book for those details. On my last conversion I used Dodge truck drums that had a smaller hole. I simply removed the staked centering rings and had smaller rings machined to match the Dodge drums. These rings were heated and slipped on the flange bosses with a .001" interference.
The 1558905 drum has a 3 1/8" hole. If yours doesn't, then it's not that part number. The drums I recently sold had that part number stencilled in faint yellow paint.

DieselJim
08-30-2016, 07:06 AM
The last flange axel change I did had the same problem. Luckily, my neighbor is a retired machinist and has a shop at his home. He measured the axel, took the drums and machined the hole to fit. Problem solved.

E. Davis
08-30-2016, 04:04 PM
Page 260 of the latest SI catalog lists the brake drum in question (1558905) for $159.95. I called about these some time ago before I found some good used ones and they told me they were replacements for the original and the studs were NOT installed so they should readily fit right on your Fairborn kit axle without any additional work.

Skip Lackie
08-30-2016, 04:11 PM
Chuck is on vacation and SI was supposed to get back to me. Is there a third or forth vendor for these parts?

I think your question has been answered, but if not: a number of vendors will have NOS and/or used drums, with or without the hub. But I believe that SI is the only company that is reproducing new brake drums, though some other vendors can supply them after obtaining them from SI. In all cases, Stude vendors prefer buyers who specify by part number.

WCP
08-30-2016, 04:38 PM
Studebaker drums made for the later flanged axles have different part numbers primarily due to the stud hole diameter. These drums are centred on the studs, so the stud holes are sized to provide a snug fit on the studs. The tapered axle drum holes are larger to accommodate the larger serrated shank of the stud, necessitating the use of the centring rings for flanged axle use.