48-52 brake question
Hotshot
Joined: Oct 2009
Posts: 16,165
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From: Burbank, WA
The Ford parts catalog lists 48-51 front brake drums as being 11 13/16" ID, and 51-52 as 12" ID.
Rear drums 48-51 are 12" ID, and 51-55 are also 12" ID, but listed under a different part number.
Rear drums 48-51 are 12" ID, and 51-55 are also 12" ID, but listed under a different part number.
Hotshot
Joined: Jan 2001
Posts: 16,876
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From: SE Wisc. (the Rust Belt)
I just sold a set of four drums for a late '51-52 F-2. They are different than the earlier trucks. I bought the set to use on my '49 but found they were different. As far as I could tell the only difference was the depth of the drum, not the width of the braking surface or the inside diameter. I didn't measure my '49 drums though so there could be a slight difference. The shoes were the same, front and back, on my '49.
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Elder User
Joined: Jan 2008
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From: N.W. Mo.
Thanks for the info.
My 52 F3 has 12" brakes but I was not sure about the earlier 48-51's or if the F-2's & F-3's were the same.
From this I think the F-2's had 12" but the 48-50 F-3's had larger.
What I am really looking at is the backing plates for a project. I am told that '53-'56 F-2 backing plates will work for what I want but was wondering about the earlier ones.
In the parts book what different front backing plates are listed for F-2's for 48-56 and in what years are the F-3's different.
Thanks again for the info.
I will go back through it again and sort it all out.
My 52 F3 has 12" brakes but I was not sure about the earlier 48-51's or if the F-2's & F-3's were the same.
From this I think the F-2's had 12" but the 48-50 F-3's had larger.
What I am really looking at is the backing plates for a project. I am told that '53-'56 F-2 backing plates will work for what I want but was wondering about the earlier ones.
In the parts book what different front backing plates are listed for F-2's for 48-56 and in what years are the F-3's different.
Thanks again for the info.
I will go back through it again and sort it all out.
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Fleet Owner
Joined: Jul 2004
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From: NM
Here are the listings for front brakes from the CD:
C = F-1
D = F-2
Y = F-3
The column to the right of the diameter is shoe width
Below are the listing for the backing plates
C = F-1
D = F-2
Y = F-3
The column to the right of the diameter is shoe width
Below are the listing for the backing plates
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Hotshot
Joined: Oct 2009
Posts: 16,165
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From: Burbank, WA
Yes, I have an original (not reprint) 48-55 Ford Chassis Parts paper catalog. It shows 48-51 D,Y front brake drum as 11 13/16 ID p/n 8 D-1125-A, and 51-52 D,Y 12" ID p/n 1D-1125-B. Neither mentions anything about width. I'm assuming there was some running change mid-year in 51 for front brakes.
For front brake backing plate, I list 51-55 D,Y, and 53-55 J (parcel delivery) as being the same. 1D-2012-B (RH) and 1D-2013-B (LH). But if you find 51's somewhere, be sure they aren't the early style that fit 48-51. They are not side specific (L and R use the same plate). It appears the 52-56 F-250/350 will work for your 52 F-3.
Fleet Owner
Joined: Jul 2004
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From: NM
I think the 12" is a nominal dimension, and includes probably 0.060" or more for turning over its life. I also think that F-250 backing plates past '56 are the same, '56 is just the limits of my CD. Very common Bendix pieces. (Number Dummy?)
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Elder User
Joined: Jan 2008
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From: N.W. Mo.
Ok
It looks like mid 51-56 f1 & f2 & f250 should be the same and work.
Now the search begins.
Any one have an extra set they aren't going to use.
The backing plates are the only part I need.
Thanks Richard
It looks like mid 51-56 f1 & f2 & f250 should be the same and work.
Now the search begins.
Any one have an extra set they aren't going to use.
The backing plates are the only part I need.
Thanks Richard
Thread Starter
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Elder User
Joined: Jan 2008
Posts: 658
Likes: 0
From: N.W. Mo.
Ross
This is n O/T project.
I am working on a 1929 model A hot rod that has 49 F1 brakes on the front.
I want to put the aluminum finned Buick drums on it but they are 12".
I can do it on the rear because they are 12" 46 Ford car brakes.
With the 12" F2/3 backing plates I should be able to make the fronts work.
Thanks Richard
This is n O/T project.
I am working on a 1929 model A hot rod that has 49 F1 brakes on the front.
I want to put the aluminum finned Buick drums on it but they are 12".
I can do it on the rear because they are 12" 46 Ford car brakes.
With the 12" F2/3 backing plates I should be able to make the fronts work.
Thanks Richard
Fleet Owner
Joined: Jul 2004
Posts: 27,290
Likes: 1,055
From: NM
Sounds like a fun project! As well as my F-1 brakes work on a F-1, I can't believe you need 12" for an A, but Buick drums are cool! You ought to check the HAMB, there are dozens of articles on what works with them.
Hotshot
Joined: Oct 2009
Posts: 16,165
Likes: 4,767
From: Burbank, WA
No! You need F-2/250 and F-3/350. F-1/100 are different. And since we don't know when the change was in 51, it's better to say late 51 than mid 51.