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 | |
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