Tuning

dampers

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Started by

camillapiano

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Opening post by camillapiano

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51
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Pineto

good morning everyone

my question today concerns the dampers (smorzatori) of a 1940 Steinbach.

in the entire bass section, there is always an echo after releasing the key; I tried to replace some felts with original Renner ones, but nothing, I tried to loosen the register screws on the damper lever, but nothing. I wouldn't want to bend the steel pin where the damper is inserted, so what else can I try?

do a complete check of the action mechanism? do I risk any damage?

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Reply 2 by Gia

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48
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Pescara

it is necessary to identify which strings produce the echo.

for example: if it is almost all the right-hand strings of the bass unisons,

it could indicate that the part where the action rests has "dropped" on the left.

all the dampers press a little less to the right of the unison ... etc etc (it was just an example)

p.s. if you move the action closer, you lose the correct geometry.

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Reply 3 by pianoexpert

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rocca di papa

What Gia says is correct. The problem should be investigated first in the bass section. Try to mute some areas of the bass with one hand or with felts until you identify the dampers that are not perfectly aligned. Then proceed towards the mids. Wedge dampers, as well as those for the contrabasses, can enter into resonance even if they do not touch perfectly.

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Reply 4 by camillapiano

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51
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Pineto

well, almost all the bass dampers (one string and two strings) are resonating, so can I try to put some shims under the left foot of the action in order to lift it a bit?

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Reply 5 by pianoexpert

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rocca di papa

No. This is how all the dampers end up being shifted to the left, even minimally. Other little things must be checked first. First of all, check that the sustain pedal is not too far forward (it must have a little bit of free play). Then check the starting position of the individual dampers and, if necessary, move the hammers back slightly (naturally, reinstall the mechanical locking screws). Then recheck.

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