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#3229625 07/01/22 07:21 PM
Joined: Jun 2022
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I have a bichord damper (small upright) that appears to be seated and aligned properly, but isn't fully damping. It's the last one on the left side of the middle section, before the break to the bass bichords.

I'm stumped how to go about repairing, as there doesn't appear to be anything wrong. The felt isn't hardened at all (tried needling it)

Any ideas greatly appreciated

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Try loosening the screw that holds the damper on the wire, and see if it reseats itself so that all of the strings are damped. It should not move very much.


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Here are some other ideas:

1. Gently push the strings back and watch the motion of the damper. Does it follow the strings? If not--if it just hangs there without moving at all--it needs adjustment of the wire to give it more tension. But see below first...

2. Check the pedal adjustment. The pedal should have just a little lost motion (slack) before anything happens. However, occasionally some dampers might lift just a little earlier than others. If that's the case, over-tightening the pedal, even by a tiny amount, could hold those dampers open just a tiny bit. When I do a pedal adjustment, I always go through each note to make sure they all damp as well as possible. If one or two bleed through, very often I just back off on the pedal adjustment and that solves the problem.

3. Are either of those strings new? Are they wound? A new string could cause poor damping, which is why new damper felt should accompany a restringing. I'm guessing that's not the case here though.

4. In verticals, that last tenor damper is usually smaller than the others, just a tiny wedge to fit next to the plate strut. If adjustment doesn't work, there's another option:
an overdamper. Many Yamaha verticals have overdampers installed at the factory to help this last damper. It's a small damper that is added above that sits on a wire attached to the main damper block. If nothing else works, you or a technician might be able to fashion one.


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