The Ford Barn

jjtaber · 01-17-2015, 12:28 AM

I have a 1928 roadster pickup with the emergency brake handle on the left side making it an AR. This car takes a lot of brake pressure to stop it. The truck is equipped, I believe, with a later version bell housing that contains a larger diameter brake pedal shaft than earlier model bell housings. Is there a difference in the dimension between the center of the brake shaft mounting hole and the center of the hole where the brake rod is attached on the earlier and later brake pedals??? If so, and if the distance on the earlier pedals is shorter, then there would be a greater mechanical advantage making the brakes easier to apply.

pooch · 01-17-2015, 01:38 AM

Good question.

I will be interested in an accurate answer as well.

dlshady · 01-17-2015, 09:48 AM

I just look quickly at several of each style that I have in the basement and there isn't any visible difference. The distance from the centerline of the pedal shaft to the center of the clevis hole looks to be within 1/10th of an inch in all of them.

My guess is that your truck could use a different style of brake shoe lining or cast iron drums. I know from my personal experiences, there are some types of brake linings that are naturally more "sticky" than others. The early brake system really gets a bad rap when in reality, it's not a bad system at all. It works quite well when everything is properly rebuilt and properly adjusted.

JohnLaVoy · 01-17-2015, 10:56 AM

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Has the brake cross shaft system been changed to the newer style? The early system was a three piece unit and the later a single solid piece. The early style tends to get out of adjustment and will actually get to the point of not stopping you. That was the reason for the evolution of the braking system by Ford, along with many states not accepting the first system.

01-17-2015, 12:28 AM	#1
jjtaber Junior Member Join Date: Dec 2013 Location: El Cajon Ca. Posts: 9	AR Brake pedal vs later brake pedal I have a 1928 roadster pickup with the emergency brake handle on the left side making it an AR. This car takes a lot of brake pressure to stop it. The truck is equipped, I believe, with a later version bell housing that contains a larger diameter brake pedal shaft than earlier model bell housings. Is there a difference in the dimension between the center of the brake shaft mounting hole and the center of the hole where the brake rod is attached on the earlier and later brake pedals??? If so, and if the distance on the earlier pedals is shorter, then there would be a greater mechanical advantage making the brakes easier to apply.

01-17-2015, 01:38 AM	#2
pooch Senior Member Join Date: Sep 2010 Location: South Coast NSW Australia Posts: 2,596	Re: AR Brake pedal vs later brake pedal Good question. I will be interested in an accurate answer as well.

01-17-2015, 09:48 AM	#3
dlshady Senior Member Join Date: Jun 2010 Location: Huntsville, AL Posts: 579	Re: AR Brake pedal vs later brake pedal I just look quickly at several of each style that I have in the basement and there isn't any visible difference. The distance from the centerline of the pedal shaft to the center of the clevis hole looks to be within 1/10th of an inch in all of them. My guess is that your truck could use a different style of brake shoe lining or cast iron drums. I know from my personal experiences, there are some types of brake linings that are naturally more "sticky" than others. The early brake system really gets a bad rap when in reality, it's not a bad system at all. It works quite well when everything is properly rebuilt and properly adjusted. __________________ My latest build thread: http://fordbarn.com/forum/showthread.php?t=67881

01-17-2015, 10:56 AM	#4
JohnLaVoy Senior Member Join Date: Jun 2014 Location: Rocklin, CA Posts: 779	Re: AR Brake pedal vs later brake pedal Sponsored Links (Register now to hide all advertisements) Has the brake cross shaft system been changed to the newer style? The early system was a three piece unit and the later a single solid piece. The early style tends to get out of adjustment and will actually get to the point of not stopping you. That was the reason for the evolution of the braking system by Ford, along with many states not accepting the first system.