Acrosonic balance rail

Greg Graham grahampianos@yahoo.com
Mon, 2 May 2005 10:03:26 -0700 (PDT)


Is the keyframe of a late 1950's Baldwin Acrosonic
spinet unusual in some way?  I wanted to shim up the
balance rail on one but was suprised by strange holes
with steel in the bottom, and screws in unusual
places.  I didn't have time to pull all the keys and
investigate, but was hoping someone on the list has
had an Acro apart and can educate me.  

Normally, the balance rail in a vertical has four or
five screws into the keybed.  You loosen them, lift up
the balance rail, and slip in some cards to restore
keydip and end burbling (aka: blubbering, bobbling,
etc.) hammers.  Total time:  10 minutes.  

I pulled up several keys on the Acro and found, well,
not what I expected.  So I put the keys back and fixed
the worst offenders by removing front rail punchings. 


Any hints for next time?  

Greg Graham


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