Wide 5 drum inner diameter

[coxswain98]

What is the maximum ID a wide 5 drum can be turned before needing replaced?

 

[deuce lover]

12.060"

 

[TerryOH]

There is no published diameter or specification from Ford.

 

[V8COOPMAN]

There is no published diameter or specification from Ford.

......... yet based on the premise that we have always deemed 12.060" to be the recognized safe - and LEGAL limit - for the '40-'48 drums, I can't imagine why we would assume that the similarly-constructed '36-'39 drums would fall under a different specification.

Coop

.

 

[rich b]

If 12.060 is max to turn the drums; what diameter is the wear limit?

 

[TerryOH]

There is no Max Dia. Spec. published by Ford for the 40-48 drums either. I know others have applied their knowledge to this issue, over years on fordbarn.com but I can find nothing in writing from Ford. IMO there should be some Spec. I am not the person to develop the Spec.

 

[DavidG]

Some say 12.090", but again not based on Ford documentation.

 

[rich b]

Wonder what the deciding factor was in olden times; must be a reason that I find so many brake shoes with shims behind the linings.

 

[Kurt in NJ]

the maximum diameter depends on what state you are in .many different rules, i

 

[alanwoodieman]

maximum dia depends on arc of the brake shoes, so say old line ford mechanics

 

[Newc]

At one time a thicker brake material was available for your shoes. I believe discontinued now. 12.060 is some what standard and hard to find. Newc