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Topic Options
#1924884 - 07/10/12 12:05 AM Upright damper rod hinges
David, Las Vegas Offline
Full Member

Registered: 10/07/08
Posts: 212
Loc: Coshocton, Ohio
Greetings,
I have broken pins from a upright damper rod. I can only find the barrel part for a replacement but the pin in the rod has broken. Are these pressed in? Anyone have to repair these before? I've inserted 2 pictures and I hope they show up.


_________________________
David Chadwick RPT
Las Vegas, Nevada
1923 Steinway "M"
1931 Mason Hamlin AA

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#1924897 - 07/10/12 01:04 AM Re: Upright damper rod hinges [Re: David, Las Vegas]
JackH Offline
Full Member

Registered: 09/29/07
Posts: 33
Loc: Vancouver, British Columbia
Hi David,
No picture came through. Tell us what kind of piano it is.
Maybe you can measure the diameter of the broken pin and make a new pin
using new round rod.
_________________________
Jack Houweling
www.Jackspiano.com
604 970-3371

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#1924958 - 07/10/12 05:59 AM Re: Upright damper rod hinges [Re: David, Las Vegas]
Johnkie Offline
500 Post Club Member

Registered: 06/04/11
Posts: 785
Loc: England
David :

I take it you mean the L shaped pieces of steel on the damper lift rod ?

You will have to remove the damper lift and use a punch to remove the broken piece, then replace with a piece of silver steel of the same diameter. It would be best if the steel was a couple of thou larger than the hole on the damper lift rod, you would then be able to get a really tight fit by heating the rod before fitting ( cherry red to expand the hole)... and when cooled down you will have a nice tight interference fit.

If not using that method, then just secure things using a little lead solder.

Best wishes - John
_________________________
Concert Tuner & Technician for the past 49 years in the United Kingdom
and Member of the Pianoforte Tuners' Association (London)
www.jphillipspianoservices.freeindex.co.uk : E-mail jophillips06@aol.com

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#1924975 - 07/10/12 07:58 AM Re: Upright damper rod hinges [Re: David, Las Vegas]
Jerry Groot RPT Offline
6000 Post Club Member

Registered: 11/07/07
Posts: 6828
Loc: Grand Rapids Michigan
Hi David,

If the "L" piece is just loose, that is, twists inside of the damper rod itself, you can have it welded. I've done that for almost 40 years and have never had one re-break again yet. I can't think for the life of me of the proper terminology (so what else is new) for the welding part of it but a good welder will know it.

I always explain that it is IMPERATIVE that it is welded perfectly straight!!! The L MUST line up with the other L's on the damper rod. The last thing we need is for that damper hanger to be crooked even by a tiny bit or dampers will not lift evenly.

_________________________
Jerry Groot RPT
Piano Technicians Guild
Grand Rapids, Michigan
www.grootpiano.com

We love to play BF2.

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#1924998 - 07/10/12 09:18 AM Re: Upright damper rod hinges [Re: David, Las Vegas]
Chris Storch Offline
Full Member

Registered: 08/13/09
Posts: 289
http://www.youtube.com/watch?v=c5NPoXDXjUI

The PTG has a video on how to do this repair. Does this help?

Chris S.
_________________________
Chris Storch
Acoustician / Piano Technician

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#1925015 - 07/10/12 10:03 AM Re: Upright damper rod hinges [Re: Chris Storch]
David, Las Vegas Offline
Full Member

Registered: 10/07/08
Posts: 212
Loc: Coshocton, Ohio
Originally Posted By: Chris Storch
http://www.youtube.com/watch?v=c5NPoXDXjUI

The PTG has a video on how to do this repair. Does this help?

Chris S.


Chris, This is exactly the issue I have. 2 of the 4 hooks have broken. I didn't think to see if the PTG video's had anything on this. It's on a Kimball spinet. My client uses it for choir practice in her home for the past year and frustrating the pianist. Thanks to everyone! Good advice!
_________________________
David Chadwick RPT
Las Vegas, Nevada
1923 Steinway "M"
1931 Mason Hamlin AA

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