***1926-1927 Rear Brake Assembly***

Discuss all things Model T related.
Forum rules
If you need help logging in, or have question about how something works, use the Support forum located here Support Forum
Complete set of Forum Rules Forum Rules
User avatar

Topic author
VowellArt
Posts: 542
Joined: Sun Jan 06, 2019 8:44 am
First Name: Martynn
Last Name: Vowell
* REQUIRED* Type and Year of Model Ts owned: 1922 Touring, th "Lady"
Location: Sylmar, Commiefornia
MTFCA Number: 9908
Board Member Since: 2012
Contact:

***1926-1927 Rear Brake Assembly***

Post by VowellArt » Thu Apr 04, 2019 7:26 pm

26-27's rear brakes were quite a bit different from the earlier years, in that there is no shoe bolt, one spring and the shoe itself is more like a band than a shoe and the linings are a single piece that wraps round the shoe. And since the design of this shoe is a one piece lining more of the shoe expands upon the drum, increasing the emergency brakes efficiency quite a bit over the previous years system.
The 4 clips on the backing plate act as guides/keepers and keep the shoe in the correct position inside the drum. All and all a rather simple assembly (it was just a pain to draw).

26-27BrakeAssembly.jpg
As always if anybody has any suggestions and or corrections, please let me know. ;)
Fun never quits!

User avatar

jagiven
Posts: 115
Joined: Mon Jan 07, 2019 8:13 am
First Name: Jason
Last Name: Given
* REQUIRED* Type and Year of Model Ts owned: 26 Roadster, 25/26 speeder
Location: St. Paiul

Re: ***1926-1927 Rear Brake Assembly***

Post by jagiven » Thu Apr 04, 2019 7:48 pm

Fabulous work!

The brake banding rivets are backwards, they are inserted from the other side,


tdumas
Posts: 72
Joined: Mon Jan 07, 2019 9:45 pm
First Name: Ted
Last Name: Dumas
* REQUIRED* Type and Year of Model Ts owned: 1927 Coupe, 1924 Touring
Location: Dallas, TX
MTFCI Number: 20999

Re: ***1926-1927 Rear Brake Assembly***

Post by tdumas » Thu Apr 04, 2019 9:47 pm

If they are split rivets, they are installed from the inside.

If the linings are countersunk and semi tubular rivets used, they are installed as shown.

User avatar

Topic author
VowellArt
Posts: 542
Joined: Sun Jan 06, 2019 8:44 am
First Name: Martynn
Last Name: Vowell
* REQUIRED* Type and Year of Model Ts owned: 1922 Touring, th "Lady"
Location: Sylmar, Commiefornia
MTFCA Number: 9908
Board Member Since: 2012
Contact:

Re: ***1926-1927 Rear Brake Assembly***

Post by VowellArt » Fri Apr 05, 2019 12:18 am

From what I've seen they're tubular rivets, not splits.
Fun never quits!

User avatar

John Warren
Posts: 1069
Joined: Sun Jan 06, 2019 12:18 pm
First Name: John
Last Name: Warren
* REQUIRED* Type and Year of Model Ts owned: 14 Roadster, 25 Pickup , 26 Canadian Touring , and a 24-28 TA race car
Location: Henderson, Nevada

Re: ***1926-1927 Rear Brake Assembly***

Post by John Warren » Fri Apr 05, 2019 8:34 am

Hi Martynn, Fabulous work. I love what you are doing. Not nit picking but I know how much you strive to get it correct. Threads on the axle and the radius rods look coarse and should be NF. Radius rod nuts looks good. Thanks, JW
24-28 TA race car, 26 Canadian touring, 25 Roadster pickup, 14 Roadster, and 11AB Maxwell runabout
Keep it simple and keep a good junk pile if you want to invent something :P


hah
Posts: 107
Joined: Sun Jan 06, 2019 1:57 pm
First Name: john
Last Name: hardiman
* REQUIRED* Type and Year of Model Ts owned: 26 coupe
Location: stoughton, ma

Re: ***1926-1927 Rear Brake Assembly***

Post by hah » Fri Apr 05, 2019 12:29 pm

On my August 26 coupe on parts 2557/8 B, brake cam, there is a washer type piece attached (welded) to the brake cam at each end to keep shoes from hitting drum. What say you (community)?

User avatar

George N Lake Ozark
Posts: 324
Joined: Sun Jan 06, 2019 2:15 pm
First Name: George P
Last Name: Clipner
* REQUIRED* Type and Year of Model Ts owned: Late '26 Touring
Location: LakeOzark,Missourah
MTFCI Number: 18665

Re: ***1926-1927 Rear Brake Assembly***

Post by George N Lake Ozark » Fri Apr 05, 2019 2:20 pm

Big flat washer on Brake Cam ???

User avatar

CudaMan
Posts: 2385
Joined: Fri Jan 04, 2019 4:17 pm
First Name: Mark
Last Name: Strange
* REQUIRED* Type and Year of Model Ts owned: 1924 Cut Off Touring (now a pickup)
Location: Hillsboro, MO
MTFCA Number: 30944
MTFCI Number: 23667
Board Member Since: 2013

Re: ***1926-1927 Rear Brake Assembly***

Post by CudaMan » Fri Apr 05, 2019 3:07 pm

Attachments
532665.jpg
532664.jpg
Mark Strange
Hillsboro, MO
1924 Cut-off Touring (now a pickup)


hah
Posts: 107
Joined: Sun Jan 06, 2019 1:57 pm
First Name: john
Last Name: hardiman
* REQUIRED* Type and Year of Model Ts owned: 26 coupe
Location: stoughton, ma

Re: ***1926-1927 Rear Brake Assembly***

Post by hah » Fri Apr 05, 2019 3:15 pm

Now community has spoken, somewhat, question would be are these available somewhere or is this a self-manufactured piece? No big deal if it is just wondering. Is the pictures accurate as to placement of washer?


tdumas
Posts: 72
Joined: Mon Jan 07, 2019 9:45 pm
First Name: Ted
Last Name: Dumas
* REQUIRED* Type and Year of Model Ts owned: 1927 Coupe, 1924 Touring
Location: Dallas, TX
MTFCI Number: 20999

Re: ***1926-1927 Rear Brake Assembly***

Post by tdumas » Fri Apr 05, 2019 3:38 pm

Early 26/27 brake cams had the washer. Later ones did not. The washer was attached to the cam by riveting over the end of the brake cam. It was not a separate loose piece.


hah
Posts: 107
Joined: Sun Jan 06, 2019 1:57 pm
First Name: john
Last Name: hardiman
* REQUIRED* Type and Year of Model Ts owned: 26 coupe
Location: stoughton, ma

Re: ***1926-1927 Rear Brake Assembly***

Post by hah » Fri Apr 05, 2019 6:28 pm

What does, "riveting over the end of the brake cam", mean?

User avatar

Topic author
VowellArt
Posts: 542
Joined: Sun Jan 06, 2019 8:44 am
First Name: Martynn
Last Name: Vowell
* REQUIRED* Type and Year of Model Ts owned: 1922 Touring, th "Lady"
Location: Sylmar, Commiefornia
MTFCA Number: 9908
Board Member Since: 2012
Contact:

Re: ***1926-1927 Rear Brake Assembly***

Post by VowellArt » Sat Apr 06, 2019 5:55 pm

I saw that big washer also, but none of the replacement cams come with that and there doesn't seem to be a provision to install one either. On the cam there is an extension of shaft for the washer to fit on and then it is either peened over or spun welded to the shaft. It acts as a guide for the shoes, as they open and close, but since they are pretty much trapped between the backing plate, it's guide clips and the drum, there isn't really anyplace it can get off to either...but you're right, the cam on a 26 has that washer, I don't think the 27 has it though, I'll have to check on that one. I've been debating as to whether or not I should break up this assembly according to their differences by their years 26 has the backing plate as it is on the drawing with that washer and 27 have a backing plate that the guides are punched out of the backing plate with a stiffener crease at the bottom of the plate (like on the backing plate of the TT's, just not as many as on a TT's).
Fun never quits!


Allan
Posts: 5205
Joined: Sun Jan 06, 2019 7:21 pm
First Name: Allan
Last Name: Bennett
* REQUIRED* Type and Year of Model Ts owned: 1912 van, 1917 shooting brake, 1929 roadster buckboard, 1924 tourer, 1925 barn find buckboard, 1925 D &F wide body roadster, 1927LHD Tudor sedan.
Location: Gawler, Australia

Re: ***1926-1927 Rear Brake Assembly***

Post by Allan » Sun Apr 07, 2019 5:50 am

Is that the correct perch for a 26-7? All my cars are earlier, but I thought the 26-7 perches virtually had the mounting thread directly off the back of the perch. Or am I getting confuse with TT items?

Allan from down under.

User avatar

Topic author
VowellArt
Posts: 542
Joined: Sun Jan 06, 2019 8:44 am
First Name: Martynn
Last Name: Vowell
* REQUIRED* Type and Year of Model Ts owned: 1922 Touring, th "Lady"
Location: Sylmar, Commiefornia
MTFCA Number: 9908
Board Member Since: 2012
Contact:

Re: ***1926-1927 Rear Brake Assembly***

Post by VowellArt » Sun Apr 07, 2019 5:53 am

Ok kids, here we go again. Wouldn't you know that the bloody rear brake system on 26-27 would be a right old pain in my rear as well. Who knew there were so many different configurations? Anyhoo, apparently the stamped and pressed shoe guides came out in 26, and by the time 27 got produced Ford went to the riveted guides. But before that came to pass, there were two different stamped guide plates, one with a drain, that carried over to 27 and one without, which makes 3 different configurations of this brake system. If you stop and think about it, that's quite a few changes for such a limited play between 26 and 27, because about sometime in May of 1927 Ford started producing the 1928 Model A and discontinued the Model T all together.

Notice how the flanged cam disappears about midway through 1926, but also at this time the introduction of the drain comes in too. Then a bit further in 1926 (about July) Ford drops the stamped guides all together and goes with the riveted guides, probably because it was cheaper to perform one operation than the two it would take for the stamped and pressed version. Because instead of the die stamping of the plate for those guides, they just had to stamp 8 holes where those guides used to be and the next operation would be the riveting the plate, both to the axle housing and those guides in one step. Cutting out the press step that was previously required which probably was a cost cut as well...and you know how Ford was on saving money, canceling that extra step probably shave a buck or two off the production of this assembly.


26BrakeAssembly.jpg
Mid26BrakeAssembly.jpg
27BrakeAssembly.jpg
Like I've said before, I get to see the progression of these assemblies through the years as a different idea came and sometimes went, but it is always fascinating...a pain in the butt most times getting things straight, but fascinating all the same....like I always say...fun never quits! 😉
Fun never quits!


Allan
Posts: 5205
Joined: Sun Jan 06, 2019 7:21 pm
First Name: Allan
Last Name: Bennett
* REQUIRED* Type and Year of Model Ts owned: 1912 van, 1917 shooting brake, 1929 roadster buckboard, 1924 tourer, 1925 barn find buckboard, 1925 D &F wide body roadster, 1927LHD Tudor sedan.
Location: Gawler, Australia

Re: ***1926-1927 Rear Brake Assembly***

Post by Allan » Sun Apr 07, 2019 6:40 am

Are they the correct perches? I thought the 26-7 style, being mounted higher on the backing plate, meant that the shackle hole was in line with the mounting bolt, or am I getting confused with the TT items?

Allan from down under.


Allan
Posts: 5205
Joined: Sun Jan 06, 2019 7:21 pm
First Name: Allan
Last Name: Bennett
* REQUIRED* Type and Year of Model Ts owned: 1912 van, 1917 shooting brake, 1929 roadster buckboard, 1924 tourer, 1925 barn find buckboard, 1925 D &F wide body roadster, 1927LHD Tudor sedan.
Location: Gawler, Australia

Re: ***1926-1927 Rear Brake Assembly***

Post by Allan » Sun Apr 07, 2019 7:19 am

Martin, something didn't look quite right to my eye with the perches, and I had to go and check it out. Your drawing seems to show the curve in the perch beginning to start inwards from the backing plate and then arching upwards. In fact, they begin going upwards and arch into the centre. This puts the shackle hole in a different orientation on the end of the perch, hanging off the perch rather than sitting on top of it. This applies to the earlier drawings also.
However,it does not answer my query about the different perches used on the 26-7 models.

Allan from down under.

User avatar

Topic author
VowellArt
Posts: 542
Joined: Sun Jan 06, 2019 8:44 am
First Name: Martynn
Last Name: Vowell
* REQUIRED* Type and Year of Model Ts owned: 1922 Touring, th "Lady"
Location: Sylmar, Commiefornia
MTFCA Number: 9908
Board Member Since: 2012
Contact:

Re: ***1926-1927 Rear Brake Assembly***

Post by VowellArt » Sun Apr 07, 2019 8:53 am

Allan, you're right those are the 14-25's...I thought I forgot something, just couldn't remember what...

26BrakeAssembly-1-A.jpg
Mid26BrakeAssembly-1-A.jpg
27BrakeAssembly-1-A.jpg
Fun never quits!


Allan
Posts: 5205
Joined: Sun Jan 06, 2019 7:21 pm
First Name: Allan
Last Name: Bennett
* REQUIRED* Type and Year of Model Ts owned: 1912 van, 1917 shooting brake, 1929 roadster buckboard, 1924 tourer, 1925 barn find buckboard, 1925 D &F wide body roadster, 1927LHD Tudor sedan.
Location: Gawler, Australia

Re: ***1926-1927 Rear Brake Assembly***

Post by Allan » Mon Apr 08, 2019 12:23 am

Martyyn, it would be clearer if the perches were 'exploded' inwards a bit so they could be seen on the drawing.

Hope this helps.
Allan from down under.

User avatar

Topic author
VowellArt
Posts: 542
Joined: Sun Jan 06, 2019 8:44 am
First Name: Martynn
Last Name: Vowell
* REQUIRED* Type and Year of Model Ts owned: 1922 Touring, th "Lady"
Location: Sylmar, Commiefornia
MTFCA Number: 9908
Board Member Since: 2012
Contact:

Re: ***1926-1927 Rear Brake Assembly***

Post by VowellArt » Mon Apr 08, 2019 3:46 am

Allan, you see the perches aren't really part of this assembly. They're part of the axle assembly (which for this axle I haven't done yet). They're shown here because the axle is assembled. The radius rod is also shown because it is fairly obvious you've got to install it before the you install the brakes. Although you can remove the brakes and replace the linings without removing the radius rod or the perch, but both of these must be installed before the brake, the drum and wheels goes on.

You see I've drawn these out of order, I should've done all the rear axles first and then the brakes and then the wheels, but I got information at different times, so I drew assemblies at those times that I got what I was needing. The only reason they're on the 14-25 brake drawing is because when I drew that axle I didn't include them (I should've, maybe it was a space or size problem, I try to make all the parts as large and clear as I possibly can). But since I haven't drawn the 26-27 (which there really is no difference between it and the 14-25 axle, other than the housing), the perches will be added on that assembly. I may even go back and make an update to the 14-25, just to be consistant...we'll see.
Fun never quits!

Post Reply Previous topicNext topic