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#1601497 - 01/20/11 02:00 PM Why a screw in my Hamilton keybed?
Edtek Offline
Full Member

Registered: 01/26/10
Posts: 275
Loc: El Paso
I took all the keys out of my 1953 Hamilton to clean them and noticed a long wood screw (about 3 inches) in between the 44 and 45 keys. The keys are relieved on adjoining sides to allow clearance for the screw to pass. The screw was screwed in only about 1/2" so the head is about even with the top of the keys.

Is this screw on all pianos or just Hamiltons? Does anyone know the function of this screw? Is it necessary?

Ed (Out in the West Texas town of El Paso)
Yamaha T118, Yamaha P255, Casio WK6600, Yamaha PSR3000

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#1601499 - 01/20/11 02:04 PM Re: Why a screw in my Hamilton keybed? [Re: Edtek]
UnrightTooner Offline
5000 Post Club Member

Registered: 11/13/08
Posts: 5260
Loc: Bradford County, PA
It controls the height of the rail that you had to remove before removing the keys. When you start putting things back together it will be obvious.
Jeff Deutschle
Part-Time Tuner
Who taught the first chicken how to peck?

#1601548 - 01/20/11 03:29 PM Re: Why a screw in my Hamilton keybed? [Re: UnrightTooner]
Edtek Offline
Full Member

Registered: 01/26/10
Posts: 275
Loc: El Paso
Jeff, many thanks for the quick reply. With the rail off it looked like it wasn't doing anything:-)

Ed (Out in the West Texas town of El Paso)
Yamaha T118, Yamaha P255, Casio WK6600, Yamaha PSR3000

#1604042 - 01/23/11 06:24 PM Re: Why a screw in my Hamilton keybed? [Re: Edtek]
J_D Offline
Full Member

Registered: 03/10/10
Posts: 305
Loc: Texas, USA
For a grand piano with a sostenuto pedal, doesn't the keybed slide? If so, does this require periodic lubrication? If so, what should be used?
Hailun 178

#1604169 - 01/23/11 09:51 PM Re: Why a screw in my Hamilton keybed? [Re: J_D]
Zeno Wood Offline
500 Post Club Member

Registered: 11/20/07
Posts: 504
Loc: Brooklyn, NY
JD - This appears to be a completely unrelated question. I would suggest re-posting this question as a new topic, with a new title.
Zeno Wood, Piano Technician
Brooklyn College

#1604399 - 01/24/11 07:36 AM Re: Why a screw in my Hamilton keybed? [Re: Edtek]
Cy Shuster, RPT Offline
3000 Post Club Member

Registered: 12/18/05
Posts: 3458
Loc: Albuquerque, NM
It's the una corda pedal that makes the action slide on the keybed (which doesn't move). I use microfine Teflon powder.

Cy Shuster, RPT
Albuquerque, New Mexico
Director, PTG Norfolk 2016 Technical Institute


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