1939 Hydraulic Brake Drum

[rotorwrench]

A person also has to know if it has an inny type hub (mounted inside the drum) or an outy type hub (mounted outside the drum) on the 40 thru 48 type brake drums since both were employed and mixed. The early wide 5 drums are getting harder to find now days. The early type wire wheel drums are also getting harder to find. A person has to adapt the wire wheels to the later type drums but it's not too big a deal. It seems like the 33s had the open drums. You can't mistake those type.

A picture might answer all of these unknowns.