Broken Plate

[Kerry Cooper]

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David,

=20

You can have this crack repaired by =91metal stitching=92.  This system =
is very
successful and has been used for many years to repair cast iron.

=20

I have had a Collard & Collard repaired with a break in the same plate =
area,
but more to the middle =96 just to the left of the treble break. This =
piano
has been at A440 and stable for 12 Years.

=20

Kerry Cooper

Brisbane,

Australia

=20

-----Original Message-----
From: David Love [mailto:davidlovepianos@earthlink.net]=20
Sent: Thursday, 26 February 2004 3:27 PM
To: Pianotech
Subject: Re: Broken Plate

=20

Here is the original post

=20

Ran into an 1890 Hobart Cable upright with a broken plate. Open face

pinblock with full plate (above and below block). The horizontal section

of the plate which lies just below the pinblock and tapers down to about =
1

1/4" wide where it joins the treble side of the plate is cracked at that

juncture. There are large plate screws all along this horizontal section

which secure to the frame underneath. The screw which is nearest the =
break

is about 10" to the bass side. The piano is 25 cents flat but seems to =
be

fairly well in tune with itself. Original strings. Impossible to tell =
how

long the crack has been there--though I wonder if in tightening the =
plate

screws, this small arm of the plate wasn't stressed due to bad fitting

underneath and the plate has been cracked from the outset. Am I getting

into any trouble to try and tune the piano? Since the crack exists on a

horizontal section and since that section is mostly secured with plate

screws, it appears that it is not having any effect on the tuning

stability.=20

=20

David Love

HYPERLINK
"mailto:davidlovepianos@earthlink.net"davidlovepianos@earthlink.net

=20

=20

----- Original Message -----=20

From: HYPERLINK "mailto:Piannaman@aol.com"

To: HYPERLINK "mailto:pianotech@ptg.org"pianotech@ptg.org

Sent: 2/25/2004 7:48:33 AM=20

Subject: Re: Broken Plate

=20

In a message dated 2/24/04 7:38:54 PM Pacific Standard Time,
davidlovepianos@earthlink.net writes:=20





Recall the broken plate I talked about awhile ago.  Attached is a =
picture.=20
I tuned the piano where it was (-20c) and it seemed to be stable enough. =

Any thoughts about potential problems?=20





David,=20

It looks like a low stress-point to me...but then, what do I know?  I'd =
be
curious to find out how it holds up, and, if possible, to find out how =
long
it's been in its current state.=20

I missed the original post.  Is this a Chickering Quarter Grand?  I've =
seen
one of those cracked at or near the same place.=20


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