[pianotech] Sluggish key diagnosis

[pianolady50 at peoplepc.com]

Michael,

Be sure to check that the oblong front rail pins are exactly perpendicular to the rail.  Any previous turning of those pins to band-aid worn bushing key sloppiness will need to be undone.

Debbie L.
Rockport, MA
    Subject: [pianotech] Sluggish key diagnosis


    I'm rebushing the keys of a Baldwin Hamilton studio and would like to get the list's help with this:

    Starting with the first 10 keys as a group, I steamed out the old bushings (using a pressure cooker without a jiggler on top), used Spurlock's .146 in mortise sizing cauls overnight and rebushed with 1.20 mm bushing cloth and hide glue, placing the cloth 3/16" into the mortises.  The steaming seemed to swell the balance rail holes and my bushings seemed tight when I placed the keys back in the piano.

    Can you tell me what indicates a sluggish key to you and what steps do you take to isolate where the problem is (front rail pin bushing, balance rail pin bushing, balance rail pin hole, etc)

    Thank you,

    Michael Staples
    PTG Associate Member

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://ptg.org/pipermail/pianotech.php/attachments/20100806/0d52a76e/attachment.htm>