Topic: Spec for rear brake shoe 1980 cb750 C

[Cinco]

Can anyone tell me the spec for a rear brake shoe on a 1980 cb750 C.  Mine is measuring 7-8mm depending on where I line it up with the backer. 

I did search, and did not find that anywhere.  My real hub is well within spec (181 I believe) that is stamped on the hub.  Of course the shoe is not stamped. 

I also found a thread about rod length (stop laughing) for the rod that goes from the pedal to the lever. Unfortunately there was no answer, at least that I could use.  I get the feeling this rod is too long, since I adjust it all the way up and it still does not take up enough.  I can thread the rod some more if needed, or adjust the lever around the splines if needed.  I am right at the indicator mark now, one notch more is not out of the question. 

I am working on taking this bike from relatively stock to a cafe model.  I'll post up some pics when I have some more time and make a better introduction. 

Thanks for any help.

[Cinco]

Well I can answer my own question, and leave it for the next researcher.  The answer is 2mm.  However, you measure only the pad, not the backer.  Since this is a impossibility, to measure with accuracy the thickness of the pad with out the backer other than laying a ruler along the side, or using good ole eyeball guesstimation, its not a very satisfactory answer.  I buy nice shiny accurate tools to be able to measure stuff and feel good and warm and fuzzy all over. 

[Bodi]

Not sure about this model but many back brakes have marks on the lever and brake plate to indicate the maximum rotation, this indicates worn shoes and/or drum.
Don't rotate the lever on the spline. It should have a keying system (skipped spline and matching spot on the lever) so you can't. If you do this to make up for wear the cam inside can jam and lock the brake.