[CAUT] center pinning changes

[reggaepass at aol.com]

 Hi Ric,

So you think the graphite is the culprit?? Is the graphite only on the surface of the cloth, such that once you treat as per your post, they stay stable?

thanks,

Alan E.


 


 

-----Original Message-----
From: Richard Brekne <ricb at pianostemmer.no>
To: caut at ptg.org
Sent: Sat, 8 Sep 2007 1:55 am
Subject: [CAUT]  center pinning changes













Hi Alan, others



Renner has for years insisted upon using graphite in their center pin
bushings. They state they have carried out extensive studies that
refute claims that graphite can cause centers to seize after some use.?
Lubrications usually have a temporary affect in my experience, but not
always.? My general solution is to re-pin, reaming the bushing very
lightly to get some of the graphite out, and working some telfon powder
into the bushings before inserting the new pin.? Seems to allow for a
tighter pining for same friction levels.



Cheers

RicB




List(s),

  

I've noticed something that I don't understand on a few actions with 

Renner parts.? Initially, the pinning is just right (either came that 

way or were made that way).? Eventually, some of the pinning becomes 

too tight.? When I apply the smallest drop of lubricant, the pinning 

that was too tight immediately becomes too loose.? This has happened 

with both hammer and repetition lever centers.? I don't get it.? Has 

anyone out there had a similar experience?? Does anyone have any idea 

what is going on?

  

Thanks,

  

Alan Eder


 


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