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Re: spridget clutches

To: Steve Byers <byers@cconnect.net>
Subject: Re: spridget clutches
From: Frank Clarici <spritenut@Exit109.com>
Date: Sat, 04 Jul 1998 11:56:12 -0400
Cc: Paul Bacon <usbacons@ihug.co.nz>, spridget list <spridgets@Autox.Team.Net>
Organization: Positive Earth Drivers Club
References: <19980704125622765.AAA197@default>
Reply-to: Frank Clarici <spritenut@Exit109.com>
Sender: owner-spridgets@Autox.Team.Net
Steve Byers wrote:
> I believe the design of the clutch is self-adjusting to some extent because
> it is intended that wear in the clutch disc friction material and wear in
> the carbon bearing should cancel each other out.  The bit about lengthening
> the push rod is interesting.  I replaced the clutch in my '73 Midget,
> rebuilt the clutch hydraulics, and included a new pushrod from Moss due to
> wear in the clevis pin hole.  After getting it all together with the new
> (correct, according to Moss) push rod, the clutch would not disengage.  I
> pulled out the new rod and compared it with the old one, and that's when I
> noticed the old one seemed to have an extension welded to it, rather
> crudely.  Put the old one back in, and the clutch worked normally.
> We have had this discussion about the pushrod modification on the list
> before, and others have said they had a modified rod also, but no one has
> come up with a good explanation for it.  If it compensates for wear, I
> don't understand why a new pushrod won't work with an all new clutch and
> release bearing.  There was a suggestion that the clutch fork might be
> bent, but no explanation of how it gets bent.  Since the rod extension
> seems to be more than a rare occurrence, I don't think I believe the bent
> fork theory.

Steve and others,

I have no proof positive on my theory but the various clutch pushrod
lengths seem to be directly related to who's brand of clutch  you use.
I have had to use 2 different rods on the same car/engine/trans but the
only difference was Borg & Beck clutch vs Sachs clutch. I think the
pressure plates are slightly different thus the need for different rods.

There is a certain Jap car which uses an adjustable rod very similar to
that of the Spridget, I found one in the junk yard but the car was
upsidedown and besides, all them jap cars look the same to me.

And fashioning a home made rod is not very difficult even if one does
use an acorn nut on it to extend it!
Frank Clarici                         Toms River, NJ
Too many LBCs
3 Sprites, an Austin A40, and an Austin Mini all on the road.
1 Jaguar XJ6 family car,  1 Racer Midget project , &  2 Parts Spridgets
Check out my home page at           http://www.exit109.com/~spritenut

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