Go Back   The Ford Barn > General Discussion > Model A (1928-31)

Sponsored Links (Register now to hide all advertisements)

Reply
 
Thread Tools Display Modes
Old 02-03-2018, 11:57 AM   #1
Shemp
Junior Member
 
Join Date: Nov 2012
Location: Eastern Iowa
Posts: 14
Default Early 28 front brake arms

I am attaching the arms to the front brake shafts on my April 28 roadster.

According to the Judging Standards (7-5), the arm should tilt slightly toward the front wheel.

The arms slide on to the shafts nicely in one direction, resulting in them tilting slightly away from the front wheel (first image). When I try to flip the arms to fit as the RGJS imply, the fit is a no-go (second image). This is true for both sides.

The difference in final brake rod eyelet location is 1/16". Is this going to be a problem getting the brake rods to clear the shocks? Or am I ok just assembling them the way they seem to want to fit?

Thanks,
Steve
Attached Images
File Type: jpg IMG_2268.JPG (35.8 KB, 100 views)
File Type: jpg IMG_2269.JPG (38.4 KB, 83 views)
Shemp is offline   Reply With Quote
Old 02-03-2018, 01:56 PM   #2
wrndln
Senior Member
 
Join Date: May 2010
Location: Lakeville, MN
Posts: 5,159
Default Re: Early 28 front brake arms

I think you are confusing "tilt to the front wheel) with tilt forward. The lever should tilt forward about 15 or 20 degrees , if I remember correctly (check the documentation for the proper angle forward). If parts are a little worn, model A part vendors sell "pills" that are put in the operation wedge where the operating rod goes, to acheve the proper forward tilt. Normally the lever will only go where the rivet slides through the lever and operation shaft holes - no adjustment. There is no correction concerning the lever and shaft area. If your lever doesn't till forward, buy some "pills" and put them in the operating wedge (the wedge that expands the break shoes).
Rusty Nelson
wrndln is offline   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 02-03-2018, 02:31 PM   #3
Bob C
Senior Member
 
Join Date: May 2010
Location: So Cal
Posts: 8,712
Default Re: Early 28 front brake arms

Quote:
Originally Posted by Shemp View Post
I am attaching the arms to the front brake shafts on my April 28 roadster.

According to the Judging Standards (7-5), the arm should tilt slightly toward the front wheel.

The arms slide on to the shafts nicely in one direction, resulting in them tilting slightly away from the front wheel (first image). When I try to flip the arms to fit as the RGJS imply, the fit is a no-go (second image). This is true for both sides.

The difference in final brake rod eyelet location is 1/16". Is this going to be a problem getting the brake rods to clear the shocks? Or am I ok just assembling them the way they seem to want to fit?

Thanks,
Steve
The Standards say "They should slat FORWARD when the brakes are released."

Bob
Bob C is offline   Reply With Quote
Old 02-03-2018, 02:36 PM   #4
Shemp
Junior Member
 
Join Date: Nov 2012
Location: Eastern Iowa
Posts: 14
Default Re: Early 28 front brake arms

I understand the 15 degree tilt toward the front. That looks like it will be correct.

My question is about how these slightly asymmetric arms tilt toward or away from the wheel to provide clearance for the brake rods from the shock absorbers. A close look at page 7-5 of the RGJS "Early 1928 through June 1928" brake shaft picture may clarify.

I think it's a minor point, but I want to get some opinions before I peen the pins. I really don't want to redo these.

Thanks, wrndln and Bob.
Shemp is offline   Reply With Quote
Old 02-03-2018, 02:53 PM   #5
aermotor
Senior Member
 
Join Date: Mar 2015
Location: Greenville, SC
Posts: 1,099
Default Re: Early 28 front brake arms

Quote:
Originally Posted by Bob C View Post
The Standards say "They should slat FORWARD when the brakes are released."

Bob

Maybe a little OT, but is there any dimensions available for the depth of the wedge and operating arm shaft receptacles?

John
aermotor is offline   Reply With Quote
Old 02-03-2018, 04:58 PM   #6
Jim Mason
Senior Member
 
Jim Mason's Avatar
 
Join Date: May 2010
Posts: 910
Default Re: Early 28 front brake arms

Sponsored Links (Register now to hide all advertisements)
Are they swapped drivers side to passenger side ?
__________________
www.jmodela.coffeecup.com
Fwiw, jm.
Jim Mason is offline   Reply With Quote
Old 02-03-2018, 05:10 PM   #7
aermotor
Senior Member
 
Join Date: Mar 2015
Location: Greenville, SC
Posts: 1,099
Lightbulb Re: Early 28 front brake arms

Quote:
Originally Posted by Jim Mason View Post
Are they swapped drivers side to passenger side ?

Both have the same part number. Snyders A-2086

John
aermotor is offline   Reply With Quote
Old 02-03-2018, 05:37 PM   #8
Bob C
Senior Member
 
Join Date: May 2010
Location: So Cal
Posts: 8,712
Default Re: Early 28 front brake arms

Looking at the first picture it looks like the hole for the rivet is more towards
the right side of the arm. I would put the arm on and see which way fits better.

Bob
Bob C is offline   Reply With Quote
Old 02-03-2018, 06:38 PM   #9
Shemp
Junior Member
 
Join Date: Nov 2012
Location: Eastern Iowa
Posts: 14
Default Re: Early 28 front brake arms

Jim, I tried swapping them side-to-side with the same result. They appear to be identical.

Bob, I agree, they are not symmetric, but they only go on the shaft in a way that looks different from the RGJS.

My October, 1928 PPL does not list these brake arms, only the later clevis-style type. Does anyone have access to the January, 1928 PPL?

I am thinking that I will pin them the way that they naturally want to go together and see how it all works out. Again, the difference in eyelet positions is only 1/16".

Thanks to all for your help.

Steve
Shemp is offline   Reply With Quote
Old 02-03-2018, 07:51 PM   #10
Jim Mason
Senior Member
 
Jim Mason's Avatar
 
Join Date: May 2010
Posts: 910
Default Re: Early 28 front brake arms

January parts list calls out A 2084
__________________
www.jmodela.coffeecup.com
Fwiw, jm.
Jim Mason is offline   Reply With Quote
Old 02-05-2018, 06:59 AM   #11
aermotor
Senior Member
 
Join Date: Mar 2015
Location: Greenville, SC
Posts: 1,099
Default Re: Early 28 front brake arms

Quote:
Originally Posted by aermotor View Post
maybe a little ot, but is there any dimensions available for the depth of the wedge and operating arm shaft receptacles?

John


btt
aermotor is offline   Reply With Quote
Old 02-05-2018, 11:27 AM   #12
d.j. moordigian
Senior Member
 
d.j. moordigian's Avatar
 
Join Date: May 2010
Location: Fresno, Ca.
Posts: 3,636
Default Re: Early 28 front brake arms

Quote:
Originally Posted by Shemp View Post
I am attaching the arms to the front brake shafts on my April 28 roadster.

According to the Judging Standards (7-5), the arm should tilt slightly toward the front wheel.

The arms slide on to the shafts nicely in one direction, resulting in them tilting slightly away from the front wheel (first image). When I try to flip the arms to fit as the RGJS imply, the fit is a no-go (second image). This is true for both sides.

The difference in final brake rod eyelet location is 1/16". Is this going to be a problem getting the brake rods to clear the shocks? Or am I ok just assembling them the way they seem to want to fit?

Thanks,
Steve
They ONLY fit one way!
Look close at the champer on one side of the arm,..and that faces the body
of the brake actuator,..the "ring seal" fits in the groove / champer..

Dudley
d.j. moordigian is offline   Reply With Quote
Old 02-05-2018, 12:17 PM   #13
Shemp
Junior Member
 
Join Date: Nov 2012
Location: Eastern Iowa
Posts: 14
Default Re: Early 28 front brake arms

I went ahead and peened them the way that looked reversed to me. It was then that I noticed what Dudley is talking about. The chamfer on the arm matches the chamfer on the the actuator housing. The dust ring snuggles in there nicely.

Thanks to everyone.

Steve
Shemp is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Sponsored Links (Register now to hide all advertisements)


All times are GMT -5. The time now is 11:48 AM.