v-bar/capo repair

[Jeannie Grassi]

This is very helpful, David.  The piano I was having trouble with was also a
Knabe.  What I don't get is that the original brass piece had no pins
holding it in place.  I'll file this away for future reference. 
jeannie


Jeannie Grassi, RPT
Registered Piano Technician
Island Piano Service
Bainbridge Island, WA
206-842-3721
mailto:jcgrassi at earthlink.net

-----Original Message-----
From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of David Love
Sent: Friday, March 10, 2006 6:19 AM
To: 'Pianotech List'
Subject: Re: v-bar/capo repair

  
Jeannie:

 

Sorry, I responded to you as if you were Barbara inquiring about a temporary
set up.  To hold them in place you can pin them by drilling a hole through
the brass and into the plate every so often and insert a bridge pin.
Attached is a photo of a Knabe tenor section and if you look real close you
can see the bridge pins sunk into the plate through the brass (half ovals in
this case).

 

David Love
davidlovepianos at comcast.net 

-----Original Message-----
From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of Jeannie Grassi
Sent: Thursday, March 09, 2006 7:53 PM
To: 'Pianotech List'
Subject: RE: v-bar/capo repair

 

I had a problem keep a length of brass half round in place. I'm interested
in knowing what people use to make sure it doesn't move.  It was a longer
piece that extended the entire treble area.   It was a slippery little thing
that moved when the tension was brought up to pitch. 

 

jeannie

 

 

Jeannie Grassi, RPT
Registered Piano Technician
Island Piano Service
Bainbridge Island, WA
206-842-3721
mailto:jcgrassi at earthlink.net

 


----------------------------------------------------------------------------
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From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of Barbara Richmond
Sent: Thursday, March 09, 2006 1:40 PM
To: Pianotech List
Subject: Re: v-bar/capo repair

 

Hi David,

 

When experimenting duplex length with brass half or oval round, would you,
in this case, place anything on the bottom of the brass to avoid scratching
the plate?   Or isn't it a problem?

 

Thanks,

 

Barbara Richmond

 

From: David Love 

To: 'Pianotech List' 

Sent: Tuesday, February 28, 2006 10:25 PM

Subject: RE: v-bar/capo repair

 

Like Ron N. says, I think it's likely it has to do with the front duplex and
you may be able to shorten, detune and increase the deflection angle by
inserting some brass of appropriate dimension-at least you can experiment.
If it turns out that that's the problem, it's not that big a deal to remove
the strings from one section and insert the new counterbearing piece and
then replace the strings (the same ones you took off).  Unhook them from the
tuning pins slip in the brass or whatever and then reattach-if that proves
to be the problem.  I get brass of varying sizes from www.rjleahy.com.  They
will cut to a reasonable shipping size.  I don't know the configuration of
this piano but maybe you can send pictures and some suggestions could be
made by various people, I'm sure.  If the noise disappeared originally by
muting the front duplex, it is likely that there is leakage occurring and
that's what you should address.  Shortening the section and increasing the
deflection can do that.  You do want to be sure that the angle and
deflection work together.  The longer the duplex the greater the deflection
angle.  Similarly, a shorter duplex requires smaller angle. 

 

David Love
davidlovepianos at comcast.net