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HOW TO MAKE FELT CARB WASHERS

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Oddjob:
Cancelled the order for the punch set as I discovered it didn't do big enough punches to make the swinging arm felt washers for the 500. Ordered the bigger set (£160) which will allow me to make them.

Anyone got a felt washer off a 500 lying around, I seem to recall it was thin but how thin. The O/D bore is 26mm but what's the inside bore? which thinking about it will be the O/D of the bush, anyone got a genuine 500 bush? I threw mine away when I cut them out of the swinging arm.

Bryanj:
Id of the felt is  not the od of the bush ken but od of the steel collar od of the felt is od of the bush, got brass bushes and collar upstairs

Bryanj:
Brass bush approx sizes 21 id 25 od but if using brass you dont use the felt, that is only on the original 500 and 750 i think, maybe 450.
All the later onrs use a phenolic top hat type i think

Oddjob:
I seem to recall the felt washer goes between the bush and the tube of the swinging arm Bryan, it then gets covered by that little top hat type plastic washer, presume it's there just to stop water entering.

Yeah, only the 500 uses it and only when using OE type bushes. Maybe some other bikes use something similar though.

CB-500:
I currently have my 500 swingarm in bits for the fitting of bronze bushes, I have all the old components apart from the felt washers!! Can’t find them anywhere!

However here’s the measurements of what I do have:

Swingarm bush (no.10 parts fiche) OD-26.5mm ID-21mm

Pivot thrust bush (no.11 parts fiche) of which the felt washers fit against - hopefully the photo makes sense, sorry the editing was done quickly

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