Repinning....Can I pullease get more responses?

[Dean May]

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I also encountered this on a K&C made by Samick, the tiny 4'7" model. I
had to repin virtually every jack center. The factory paid for it.
 
Dean
Dean May             cell 812.239.3359
PianoRebuilders.com   812.235.5272
Terre Haute IN  47802
 
-----Original Message-----
From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On
Behalf Of Piannaman@aol.com
Sent: Wednesday, September 14, 2005 12:30 AM
To: pianotech@ptg.org
Subject: Re: Repinning....Can I pullease get more responses?
 
Matthew,
 
Just a hunch....
 
I work on a Samick SG 150.  I'd be willing to bet that your Shafer is a
Samick-made product.  But if yours is a 1968, it predates mine by 30
years.
 
I ran into a similar problem.  Make sure you look closely at where the
problem lies.  I  found that a good many wippen, jack, repetition, and
hammer centers were essentially seized up  .  A couple of underlever
flanges were sluggish, too.  I have probably replaced 1/3-1/2 the center
pins in the piano in the last 3 appointments.
 
When you start removing center pins, you may discover that there is
dark, sort of gooey stuff on them.  If that is the case, I believe it is
graphite from graphite impregnated flange bushing cloth.  (My fear is
that I will go back one time and find that the replaced pins will start
seizing, too).  
 
The piano that I work on suffers from sitting in a picture window and
getting extreme doses of sunlight in the winter months.  I am not
certain that heat exacerbates the condition, but it seems to get worse
when the sun hits piano squarely.
 
Be patient, work slowly until you get the hang of it.  I find it a nice
break from tuning--for the first couple of hours, at least!  
 
I have had more than one 4 hour session in the customer's home.  It
saves you drive time if you can do it there.  Having a stand or platform
of some kind for the action is essential.  
 
Good luck!
 
Dave Stahl
 
In a message dated 9/13/2005 7:38:04 PM Pacific Standard Time,
toddpianoworks@yahoo.com writes:
Some of the worst hammers there don't swing at all.  About six of them
are that bad, and others have between one to two.  There are some others
that "seem" to be fine.  I say "seem" because I tested their piano by
playing it first, finding the really bad ones, then taking the action
out and really examining them to pinpoint the problem.
 
Matthew
"William R. Monroe" <pianotech@a440piano.net> wrote:
Hi Matthew,

You wrote: "Could this just be related to swelling?"

Only you can tell us. Is it humid there now? Does it get dry in the
winter, and then, are the hammer centers more free? You'll need to do
some
analyzing yourself and determine what is your best solution. If the
hammers
are really seized up (less than a couple swings), I'd be comfortable
saying
that it's not just humidity, and opt for repinning. Of course, if the
bushings are all full of nastys, maybe needs new bushings?

Once you've determined the cause of the problem, then determine the
solution
that works for you and your client.

Respectfully,
William R. Monroe



----- Original Message ----- 
From: "Matthew Todd" 
To: "Pianotech" 
Sent: Tuesday, September 13, 2005 6:20 PM
Subject: Re: Repinning! ....Can I pullease get more responses?


> I believe I will take the action home with me. These are hammer
centers.
The hammers are very tight to move! Could this just be related to
swelling?
>
> This is not a Steinway. I don't believe I have the Mannino, but I do
have
a set I ordered from Schaff, and a good center pin punch.
>
> Matthew
>
> J Patrick Draine wrote:
> Matthew,
> If you are already skilled & speedy at repinning action parts, go for
> it. But it sounds like you aren't so ... bring the action to your
> shop. It will probably take you more than 4 hours (are these hammer
> centers? jack centers? damper lever centers??).
> Why are you repinning? Parts frozen up? Are treatment with Protec
> CPL, or sizing the bushings with an alcohol/water solution, viable
> alternative solutions?
> Is this a Steinway?? If so, it's likely you're dealing with
! > verdigris, and repinning is seldom the correct remedy (parts
> replacement is best).
> Give us more details and we'll be able to give more precise advice.
> Do you have appropriate tools? The Mannino broaches, a quality center
> pin punch, etc?
> Patrick Draine
>
> On Sep 13, 2005, at 5:43 PM, Matthew Todd wrote:
>
> > I will be undergoing a repinning project on a client's grand. The
> > "G" Piano Works guide says it takes 4 hours. Is it appropiate to
> > do this project in the client's home, or do I need to take the
> > action with me and do it in the shop? If I take the action with
> > me, that brings up another question. If it's raining, how do you
> > all prepare and protect the grand action??
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