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Title: Rear brake drum
Description: Can the 63-66 drum be modified to fit 67-72 hub 
Author: BorJan
Got my hands on a 67-72 internal hub and have in mind to replace the 36-66 star hub at my rear wheel. My rear brake drum is a 63-66. Are the bearings mounted in the 67-72 rear brake drum ? Can the 63-66 drum be modified to fit 67-72 hub?
Somebody who have a sketch/drawing ?

Regards
BorJan

Post by dj on Dec 5, 2004, 12:13pm

The 67-72 drum does have the sealed bearing mounted in the drum. This is the set up I have and I'm going strictly from memory because I do not have a diagram handy. There are three sealed bearings in the hub/drum assembly.
I do not know what the differences are between the 63-66 and the 67-72 drum, but the brake assembly is the same from 63-72. So the brake drum "shell" width is the same....(the backing plate/shoes/wheel cylinder is also the same for 63-72).
I believe all that you will need is a 67-72 rear axle kit with the proper spacers and sleeves....unless there are significant differences in the dimensions of the width of the inner part of the two drums.
I wish I could be more help with exact dimensions so we could determine the differences, but YES the sealed bearings are mounted in the 67-72 drum.

Post by 55fl on Dec 7, 2004, 2:57am

The later brake drum is wider as are the shoes. I have them on my '69 shovel, good drum brakes. The only bitch I have with them is the cost of replacement bearing sets.

John


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