Colchester Chipmaster Clutch question

Colchester Chipmaster Clutch question

This topic has 3 replies, 2 voices, and was last updated 22 May 2025 at 10:43 by Pete.

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21 May 2025 at 14:01 #799066
Peter_H
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@peter_h
I have a spare headstock in pieces that I am going to refurbish and “just swap over” with the current headstock. I’ve noticed that the friction plates from the spare Matrix clutch look like they may be oily. Assuming it is a dry clutch, do the members have any thoughts on cleaning and drying the friction plates please?. Also I can’t find any information on the original thickness of the plates so it would be a good measure of wear if this knowledge is available too.

Lastly, the tapered brake disk – should it be tapered down all the way to the end?. On mine, the small diameter taper end runs out about 2mm or so from the end and is parallel for that last 2mm. Is this wear, and if so is it OK to face a bit off it?

Sorry for so many questions!.
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22 May 2025 at 02:34 #799145
Pete
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@pete41194
I can’t provide an answer about your more specific questions. But an old trick for oil soaked wood is to position it close to but not touching, and slowly move it over something like an electrical hot plate for some minutes. It’s the heat that helps to thin and drive out the oil. A direct flame on the surface should not be used. Wipe off with paper towels as the oil comes to the surface, and keep reapplying the heat until very little oil reappears. At that point, I’d use either a pressurized spray can of brake or electrical contact cleaner.

If you don’t already have it, your used manual and that clutch assembly drawing is here. https://pearl-hifi.com/06_Lit_Archive/15_Mfrs_Publications/02_Machine_Tools/Colchester_Chipmaster/Chipmaster_Manual.pdf
22 May 2025 at 10:35 #799188
Peter_H
Participant
@peter_h
Smart idea, it has to be worth a try. I wonder if a hot air gun would be OK?. I have one that you can set the air temperature between 50C and 300C. That manual is the clearest copy I’ve seen yet. Thanks for your your help Pete.
22 May 2025 at 10:43 #799191
Pete
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@pete41194
If you have a heat gun, that would probably work even better.
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