[Fot] WG: Quartermaster Clutches

[tr4racing at googlemail.com]

All these type of clutches (Quatermaster, Tilton, etc.) suffer from the same
thing, that the pressure plate warps from heat.

The good news: They are designed to be ground flat. Put it on a magnetic
table of a grinding machine and let it surface then you have good new
clutch.

 

Cheers

Chris

 

Von: Fot <fot-bounces at autox.team.net <mailto:fot-bounces at autox.team.net> >
Im Auftrag von marty via Fot
Gesendet: Donnerstag, 18. April 2019 17:47
An: fot at autox.team.net <mailto:fot at autox.team.net> 
Betreff: [Fot] Quartermaster Clutches

 

Looking for some clutch help. I recently disassembled a quartermaster Pro
7.25 single disc clutch, not from my car. I have no experience with this
style of clutch. Upon disassembly I observe that the flywheel insert, clutch
disc and pressure plate only have had contact on the outer 3/8 " diameter.
Upon further investigation the flywheel insert surface is flat. The clutch
surface thickness is uniform but if I lay a straight edge across the face of
the Quartermaster pressure plate  it cups outward. My initial thought was
"bingo" this would cause the wear pattern I am observing. Must be something
out of whack with the pressure plate insert.  I contacted quartermaster and
described what I saw and they were not much help other than "something must
be warped". I was getting ready to order a replacement pressure plate insert
but I stopped over to Jason's shop and saw that he was working on a car that
also ran a quartermaster Pro 7.25 clutch but this was a double disc. I took
it apart and all components had even wear across the faces as one would
expect.  I layed a straight edge across the pressure plate out of this
assembly expecting to see a flat contact surface and was surprised to see
the same cupped condition where the outer pressure plate surface would
contact the clutch disc first as the one at home. Now I am at a loss as to
what would cause this improper wear pattern. Any experience with this?

 

Marty

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