[pianotech] Sostenuto

[David Love]

OK, definition of terms issue.  I was calling the pivots the blocks that
hold the damper tray in place and the brackets the things that hold the
sostenuto rod in place.  I can move the pivots and was wondering about
bending the brackets.  So the answer I gather from you and Jon Page is that
you can't bend the brackets that much.  So I either leave them alone (the
damper tray and sostenuto rod) which are currently parallel to each other
but not parallel to the key bed, or move them. 

A few other measurements to make before I decide.  Thanks all.


David Love
www.davidlovepianos.com


-----Original Message-----
From: Joseph Garrett [mailto:joegarrett at earthlink.net] 
Sent: Saturday, February 16, 2013 10:36 PM
To: David Love
Subject: Re: [pianotech] Sostenuto

David,
If you relocate the pivots in the correct place, why would you need to bend
them. Those are cast brass. I wouldn't attempt bending much, unless you
annealed them first.
Joe


> [Original Message]
> From: David Love <davidlovepianos at comcast.net>
> To: joegarrett at earthlink.net <joegarrett at earthlink.net>;
pianotech at ptg.org <pianotech at ptg.org>
> Date: 2/16/2013 10:28:38 PM
> Subject: Re: [pianotech] Sostenuto
>
> The question is if the sostenuto brackets can be safely bent or not 
> once
the pivot is relocated.
>
> David Love
> www.davidlovepianos.com
>
> On Feb 16, 2013, at 10:18 PM, "Joseph Garrett" 
> <joegarrett at earthlink.net>
wrote:
>
> > David Love said:
> > "Working on an older MH A. Discovered that the damper tray is 
> > mounted
about
> > 3 mm high on the treble side. I can remove the pivot block and 
> > relocate
the
> > pivot pin hole 3 mm lower easily enough. However, the sostenuto 
> > mounts
were
> > also installed to match the damper tray misalignment and are also 3 
> > mm
high
> > on the treble side. They will need to be realigned to match the
orientation
> > of the damper tray. So I'm wondering about bending these mounts, how
much
> > bending will they take and what's the best way to go about it 
> > (strung already of course). I have installed capstans on the tray 
> > but the 3 mm disparity would have them pretty much bottomed out on 
> > one and, well, 3
mm
> > higher on the other end. 
> > 
> > Gee, maybe that Steinway system isn't so bad after all. 
> > 
> > Thanks in advance"
> > 
> > David,
> > Yer welcum.<G> Personally, I'd just remount the pivot. Extract it 
> > from
the
> > belly rail; plug the hole and then redrill 3mm lower. Screw the 
> > sucker
in
> > and be done with it. BTW, Typical M&H "make it fit" sort of thing, imo.
> > Joe
> > 
> > 
> > Joe Garrett, R.P.T.
> > Captain of the Tool Police
> > Squares R I
> > http://gpianoworks.com/
> >