S&S D balance rail pins

[Richard Moody]

The  (I take it  they lean backward more than usual) backward leaning
pins may also have been an attempt to reposition away from worn
bushing felt.    Needless to say the grand piano cannot stand too much
play in the balance rail bushings because it multiplies "waggle" in
the back checks.  So some enterprising tech "tapped" the BR pins back
perhaps.  It is easier to tap them back than forward if the action
(stack) is not removed. Now whether this elongates the hole I don't
know but reason says maybe.
Are there now "pulley keys" or does this happen if the pins are tapped
back. ?
The BR pin in contact with the rear of the button creates a strange
sensation of not enough key dip, it seems spongy, and that a couple of
punchings might firm it up.     ---ric

----- Original Message -----
From: Christopher D. Purdy <purdy@oak.cats.ohiou.edu>
To: <pianotech@ptg.org>
Sent: Thursday, June 28, 2001 7:57 AM
Subject: S&S D balance rail pins


| I am rebuilding a D #142465 (1910 I think) and have noticed
something odd.
| The balance rail pins are leaning back towards the back of the
frame.  They
| are at roughly 95 degrees to the keybed.  Same thing in the key
mortice.
| The problem comes with the key depressed, the back of the key button
tends
| to hit the balance rail pin.
|
  I am still bushing keys and fitting them back to the
frame so I
| am not into regulation yet but I have never noticed this pin angle
before.
|
| chris
|
| -Christopher D. Purdy R.P.T.
| -School of Music, Ohio University
| -Athens, OH  45701
| -mailto:purdy@ohio.edu
| -(740) 593-1656 office
| -(740) 593-1429 fax
|
|