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The stud extending from an original 1940 Ford brake pedal pad measures .525"
and an 18 pitch gauge fits it perfectly. What is the thread?

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John Kunkel wrote:
The stud extending from an original 1940 Ford brake pedal pad measures .525"
and an 18 pitch gauge fits it perfectly. What is the thread?



At a guess I would have suggested 1/4" American National Standard
Straight Pipe thread but it may have been a precursor as I don't think
the American Standards had been introduced in 1940.

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"John Kunkel" wrote in message
...
The stud extending from an original 1940 Ford brake pedal pad measures
.525" and an 18 pitch gauge fits it perfectly. What is the thread?

Sounds like 1/4 in pipe or 9/16-18 UNF.
Paul K. Dickman

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Could it be simply a badly worn 9/16-18?

Pete Stanaitis
------------------------

John Kunkel wrote:

The stud extending from an original 1940 Ford brake pedal pad measures .525"
and an 18 pitch gauge fits it perfectly. What is the thread?

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On Fri, 05 Dec 2008 17:40:02 -0600, Paul K. Dickman wrote:

"John Kunkel" wrote in message
...
The stud extending from an original 1940 Ford brake pedal pad measures
.525" and an 18 pitch gauge fits it perfectly. What is the thread?

Sounds like 1/4 in pipe or 9/16-18 UNF. Paul K. Dickman

That would be my guess.

If there isn't a good Ford restorer's newsgroup I'm sure there's some
good forums -- and there's plenty of early V-8 enthusiasts out there that
could quote you chapter and verse of the specs.

Bob Drake Reproductions may make this (if they've gone beyond _just_
rubber goods). Or send an email to Karl at Wescott's Auto Restyling
(http://www.wescottsauto.com). He'll know if you can get his attention,
and if you're looking for a new pedal he will have one, or know where to
get it.

--
Tim Wescott
Control systems and communications consulting
http://www.wescottdesign.com

Need to learn how to apply control theory in your embedded system?
"Applied Control Theory for Embedded Systems" by Tim Wescott
Elsevier/Newnes, http://www.wescottdesign.com/actfes/actfes.html

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John Kunkel wrote:
The stud extending from an original 1940 Ford brake pedal pad measures .525"
and an 18 pitch gauge fits it perfectly. What is the thread?


Up until the 70s Ford was absolutely "ANAL" about their machining, I
would imagine 17/32" 18TPI "V" thread. You may want to check the thread
angle (3 wire method using 2 different sizes) to see if it's really 60
degrees...

Take that, copiers and SAE!

Matt

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"Paul K. Dickman" wrote in message
...

"John Kunkel" wrote in message
...
The stud extending from an original 1940 Ford brake pedal pad measures
.525" and an 18 pitch gauge fits it perfectly. What is the thread?

Sounds like 1/4 in pipe or 9/16-18 UNF.
Paul K. Dickman

Ding!! Give the man a cigar, it's 1/4"-18 straight pipe thread. Who woulda
thought?