Air Box inner fender RPO 579D vs. RPO 684 inner fender

[Joseph T.]

What is the size of the inner fender brake tube hole on an air box car RPO 579D vs. an RPO 684 car

[David B.]

Re: Air Box inner fender RPO 579D vs. RPO 684 inner fender

Joe, Is this a test question?? Thought you had layout print L-47877 or L-47865, if not, you probably are interested in Engineering drawings dated 12-19-56 for Hose-Rear brake-air # 3744823 and Flange-rear brake air duct # 3744824. Have in files if this is what you need. ??? Email me.

[Joseph T.]

[Joseph T.]

Re: Air Box inner fender RPO 579D vs. RPO 684 inner fender

My #775 Nassau car has 4 inch inner fender brake air tube holes. Clearly my car is a pre production air box and big brake car but it helps show the evolution.

Here is a 12/3/1956 Tom Burnside photo taken at Nassau showing the prototype air Box in place. Not the same shape as the production air box.

[Joseph T.]

[Jim L.]

Re: Air Box inner fender RPO 579D vs. RPO 684 inner fender

Joe, on the Jerry Austin/Bob Bondurant '57, the brake air hose on both inner fenders is 4".

Jim

[Joseph T.]