Kenpro was purchased by Yaesu...
This is what was thinking about. I have seen small brake pads for e-scoters that would work and they are cheap, but they are stuck to a metal backing plate so they would need removing. The original friction material comes as a disc with double sided tape on the back. I figure I just need to find the right material, cut it to size and glue it in place. I just don't know much about clutch/brake pad material to choose and source the right one.I wonder if you could use a motorcycle flat brake pad and cut the friction material off and dremel it? I know it would be time consuming and you would need to be careful of dust etc. (respirator needed) But you should be able to fashion something and then epoxy it to the washer after if has been thoroughly degreased?
It's not something I've done before and I've been putting this off for years It either has to be repaired or I throw it away, and I hate throwing things away lol. I've used two 1mm thick discs of nitrile infused cork and it is working as a brake. Once I get it back together I'll mount a stub mast and a bit of boom to it and see how well the brake works once there is a bit of leverage on it.I mostly avoid taking rotators apart, but I can tell you that inside reel-to-reel tape machines the two friction materials used for brakes were felt and cork. Not sure what else you could find in the thin-layer form you need.
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