Dealing with one of the longest tenor breaks of any piano, I started with having to make 4 over dampers. But through much tweeking I was able to eliminate 3 of them and was left with one, which was from a node problem. To make the over damper is easy- bend music wire to shape with a loop at the top to sandwich the back of the damper head with another piece of felt.
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Chernobieff Piano Restorations
"Where Tone is Key"
Piano Designer and Maker
Designer of Inertia Touch Wave
865-986-7720 (text only please)
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Original Message:
Sent: 04-30-2023 21:22
From: Steven Rosenthal
Subject: modulating upright piano damper after-ring
Aren't the dampers on those models the long ones with 3 felt blocks? If your surmise is correct that the problem involves touching a node, perhaps the middle or bottom block could be trimmed or removed to avoid the node if you can locate it. Or perhaps replacing a block with a less dense treble felt block.
I understand your desire to solve this in one trip but this kind of problem can be vexing. The wire extenders aren't a guarantee either. I had a similar problem with dampers last summer, it wasn't a profitable venture for me. >:P
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Steven Rosenthal RPT
Honolulu HI
(808) 521-7129
Original Message:
Sent: 04-30-2023 16:40
From: David Love
Subject: modulating upright piano damper after-ring
Not sure the model but 52" probably 10 years old
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David Love RPT
www.davidlovepianos.com
davidlovepianos@comcast.net
415 407 8320
Original Message:
Sent: 04-30-2023 11:06
From: Zackery Hardy
Subject: modulating upright piano damper after-ring
May I ask what Model this is on?
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Zackery Hardy
Elk Grove CA
(916) 531-5150
Original Message:
Sent: 04-29-2023 01:50
From: David Love
Subject: modulating upright piano damper after-ring
I work on a MH upright, newish, that has an annoying after-ring that clearly emanates from the monochords only. I'm looking for solutions that folks have found to this issue by installing damper extensions. There's plenty of force on the strings applied by the damper springs, in fact, more than is desirable in terms of touch characteristics, so it's not that and I'd prefer not to increase that force even if it were to have the desired effect.
It may be that the dampers are touching or are near a harmonic node but there aren't any realistic options to moving the dampers. So the only options seem to be extending the existing dampers by installing longer dampers or adding a damper wire extension (see below). What have any of you found to be the most effective and if it's the wire extenders where did you get those parts and how did you go about attaching them. I'm thinking this type of idea though for the monochords (the picture below is for the low tenor),
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David Love RPT
www.davidlovepianos.com
davidlovepianos@comcast.net
415 407 8320
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