[CA Victoria]

Mr 42,
I could not find the reference and hence asked the same question here. I am not dodging safety just looking for the “why is it”. & what have you done to mitigate the differences. Maybe with 51504bat’s experience with Ca Highway Patrols MAIT team he can provide more info.
I am venturing to guess there are at least a gaggle of early Ford’s with original mechanical brakes and hopefully most have been done safely and stop well. So far no one has offered up any new drums for 32-38 Fords. Agreeing with Tim on drum safety the standard is based on manufactures design and at least with modern drums it is stated for the service person.
Sooooo with out info from Ford/Kelsey Hayes it is fair to ask what is the minimum thickness for a 1935 Ford Drum. At 12.090 the ( “stated maximum” ) drums are about .125 thick.......

So far I have restored the brake assemblies with NOS Ford parts, if you have 2 NOS 1935 drums I’d love to buy them!