***Re: Nine foot something - quickie hammer centre check

[Richard Brekne]

Hmm..

Well.. if it is plated centers going bad then the only real solution is 
to repin, maybe even rebush.  Try repinning a section, reaming to clean 
not to enlarge..  and working some teflon powder into the bushing before 
installing new non plated pins. If the problem stays away.. then you 
have your solution.

Cheers
RicB

Kevin E. Ramsey wrote:

> OK, I haven't read all the posts, but now I think I know what you're 
> talking about. Locked up flanges on Samick pianos, when you re-pin you 
> see black stuff on the old pins, right?  I've seen a lot of this, like 
> whole actions or damper underlevers locked up so tight that you can 
> hold up the underlever parallel to the floor, supporting even the lead 
> weights while you're holding the flange. Roger says it's an 
> application of graphite gone bad.  I talked to one of their service 
> reps who once told me that there was tallow in the felt, and that if I 
> just got a hair-dryer in there and worked the flanges back and forth, 
> they'd free up.  He also said that the flanges must have been exposed 
> to heat at some time for the tallow, which may be like the lanolin 
> normally found in wool, to condensense onto the pin. Funny, when I 
> looked at some of the pins under magnification, it looked like a 
> plating problem to me to. I work for a dealer who sells samicks, so 
> I'm the one to go out on these kind of calls a year later. I've also 
> talked to one or two other techs who did a repin job, only to have the 
> problem return a year later.
>  
> It's still a problem, but we're seeing it less and less.
> Kevin.
>  
> I'm hoping that I'm not responding to something else, but this is a 
> problem I'm well aware of, anyway.
>
>     ----- Original Message -----
>     *From:* Richard Brekne <mailto:Richard.Brekne@grieg.uib.no>
>     *To:* Pianotech <mailto:pianotech@ptg.org>
>     *Sent:* Wednesday, March 10, 2004 3:44 PM
>     *Subject:* Re: ***Re: Nine foot something - quickie hammer centre
>     check
>
>     Hi Keith
>
>     forget my last querry about the pianotype.... John suggests plated
>     pins
>     being the problem... I wasnt awared that Samick used plated
>     centers...
>     can anybody confirm this one way or the other?
>
>     Cheers
>     RicB
>