Tips on finding leaking damper

[Roger Jolly]

Hi Terry,
                 Another test,  depress the pedal and check that the 
offending damper is perfectly in line with it's neighbors.   The should 
include head tilt.  It's easy to get fooled.  The top of the damper hits 
the strings just like it's neighbors, but the lower part of the damper is 
hardly seating on the strings.
The adjustment is best done first in an action cradle with the damper lift 
rod propped open.  Eye ball both the tips and tails of the damper 
heads.  If memory serves me, that's a flat damper?
If this is done and the problem is still there, loosen the head screw and 
lower the damper on the wire about 1mm. The damper may be touching a node 
point.  ( But I doubt it) Not noticed this problem on P22's.
Regards Roger


At 07:42 AM 2/8/2003 -0500, you wrote:
>OK. Now I have a leaking damper problem (middle C). Nice little Yamy P22. 
>I've checked all the things below, everything seems A-OK (except the 
>ringing of course). I fluffed up the felt a bit with a needle as a last 
>resort - changed it a little, but no real improvement. I told the owner if 
>it did not quiet down in a week or two on its own, we will change the felt 
>on the offending damper when we tune the piano in a week or two. Does that 
>sound like the best approach?
>
>Terry Farrell
>
>----- Original Message -----
>From: "Phil Ryan" <pryan2@the-beach.net>
>To: "Pianotech" <pianotech@ptg.org>
>Sent: Saturday, February 08, 2003 6:12 AM
>Subject: Re: Tips on finding leaking damper
>
>
>Thanks to all who responded to my post on leaking dampers.  The responses 
>I received were very helpful and solved the problem.  I thought I would 
>compile  them here for anyone who missed the original post.  Good Luck
>
>Phil
>
>1. Check the pedal rods that they are not too tight.
>2. Check that the dampers move(follow) when you push on strings.
>3. Pluck each string to check for ringing.
>4. Check condition of damper springs.
>5. Check that the action brackets are tight against the plate bolts.
>6. Dampen the strings with finger or mute to find offending damper(s).
>7. Check seating of action feet on action bracket.
>8. Check seating of bottom portion  of damper felt on bichord strings.
>
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