d-clicking D clicks

[David Love]

Try wicking in some thin CA glue from the area of the let off button screw.
If the dowel has shrunk there will be a small gap that will allow the CA to
penetrate, if it turns out to be let off screw itself it will also solve
that problem.  

David Love
davidlovepianos at comcast.net 
www.davidlovepianos.com

-----Original Message-----
From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of Conrad Hoffsommer
Sent: Wednesday, April 09, 2008 5:47 AM
To: pianotech list
Subject: d-clicking D clicks

Folks,

A teflon-removed, 1960s S&S D has come up with a click I'd not 
encountered before, (or finally gotten loud enough to get on the radar 
screen).

Loose hammerhead/screw/key lead???  I narrowed it down to the let-off 
button/screw/rail.

I got it to click if I tap the button lightly from the front. OK, says 
I, just screw the button back up onto the screw, and re-regulate let-off.

Wrong. Still clicks.

Grabbed button and tried wiggling again like a loose tooth. Click.

Hmmm... threads in wood worn?  Maybe screw hole looking slightly 
tapered?  Or just another "feature"...

Wiggled tooth again, this time holding the eye of the screw.  It moved. 
I'm thinking that eliminates the tapered hole scenario?

For some reason tried tapping along the front of the rail. Solid sound 
except in area of the click(s).  Impure thoughts occurred.

I'm thinking that the imbedded dowel has shrunken in that area, and that 
the click is the dowel slapping inside of the brass tube.

Any thoughts on how I should approach this?  Simply squeeze rail with 
vise grips in that area, or would I be causing another problem by doing 
that?



-- 
Conrad Hoffsommer, RPT - Keyboard Technician
Luther College, 700 College Dr., Decorah, Iowa 52101-1045
1-(563)-387-1204 // Fax 1-(563)-387-1076