Damper Tray Problem/missing spring?

[Andrew and Rebeca Anderson]

Tom,
Try loosening one end from its mount and see if it stops springing 
and then is hard to remount in the old position...

Andrew Anderson

At 07:46 AM 8/6/2006, you wrote:
>No, on second thought there are no damper springs.  I would have 
>noticed them when putting the damper wires in.  That ain't it.
>
>I've got limited time to get this fixed.  Let me try again.
>
>Mason AA, total rebuild, now in the process of regulating.  Damper 
>tray won't stay down, in contact with pitman, but hangs in the air, 
>actually holding the dampers up off the strings.  I can push the 
>tray down till it contacts the pitman and there seems to be very 
>little resistance when doing so, but it pops back up again, almost 
>like being on a spring.
>
>Maybe is there a spring missing that I don't know about?  Should 
>there be a spring that holds the tray in the downward position that 
>perhaps has come off sometime during the restringing, etc.?
>
>My knowledge of damper actions is limited, so forgive my maive 
>question.  Not sure how to solve this problem, and it's a big 
>one.  Piano is unplayable with many strings ringing on.  (All the 
>dampers dampen perfectly if I simply hold the tray down and allow 
>them to rest on the strings like they should.)
>
>Help, please!
>
>Tom Sivak
>
>A440A at aol.com wrote:
>
><< Wha'ts up with this? I can't imagine that there actually IS a spring in
>there, holding the tray up. If anything, I would expect there to be a spring
>holding the tray DOWN, allowing it to be lifted by the pedal, and then return
>downward with the aid of a spring. >>
>
>Greetings,
>this is a common problem where there are damper springs in place. If
>an axis is shared by the underlever pinning and the tray pivots, any 
>underlever
>springs will try to rotate the tray upwards.
>Are there damper lever springs on this assembly?
>
>
>
>Ed Foote RPT
>http://www.uk-piano.org/edfoote/index.html
>www.uk-piano.org/edfoote/well_tempered_piano.html
>

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