A rot-gut-simple damper up-stop regulating jig. Setting this adjustment, with its in and out blind guesswork, at the end of a regulation, often means it doesn't get done. I needed someway to record the sample damper height , before pulling the action to make the adjustment.
pics imbedded. The recording jigs sit on top of the resting dampers. 2 samples per section are taken on black keys. Depress the sample black key to full dip. With sample key at full dip, and the rest of the keys at rest, with a .060" shim sitting on top of the sample damper head, adjust the recording screw until it is just touching the top of the shim. Remove the shim and the action, and adjust the damper up-stop rail until the damper up-stop rail only allows the damper head to just touch the screw of the jig. For the rail adjustment, the jig is still sitting on top the other
resting dampers in the section, and, of course the shim has been removed.
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Jim Ialeggio
grandpianosolutions.com
Shirley, MA
978 425-9026
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