After fitting I dried them out in the oven for 10 minutes.
Angle grinder fitted to a lathe does the job.
It's easy to make both sides parallel this way.
Cork is a good material for clutch friction plates, as long as they aren't overheated by excessive slipping. They are nice and "spongey" so help absorb shocks, have a better grippiness than other materials.
The ones shown here are "salt & pepper corks", or conical bungs of size 12x17x25mm, bought from a cork supplier in Sydney:
Portugal Cork Co Pty Ltd
Ph: 02 9676 8400
type SPC25
cost $17.60 for 100
CLICK IMAGES TO ENLARGE
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Boiling the corks first makes them more pliable, easier to
fit in holes. 90 required for the 3 plates. After fitting I dried them out in the oven for 10 minutes. |
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Set of plates with corks inserted, prior to machining. |
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Setup for grinding flat the faces of the cork plates. Angle grinder fitted to a lathe does the job. It's easy to make both sides parallel this way. |
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Finished plates, ground to maximum 1/4 inch thickness. |