Wurlitzer G411

[Don Mannino]

Wesley,
 
As Dean mentioned, first raise the balance rail supports and make sure they
are not lifting the action too much.
 
Then, hopefully, the front rail will not be so high off the keybed at the
center.  You can plane / sand the ends to fit.
 
If there is still too much height in the middle, one good repair is to glue
some veneer to the front edge of the keyframe on the bottom, then sand /
plane everything to fit the keybed properly.  Reset the balance rail
supports after the front and back rails are well fitted.
 
Another technique is to cut saw kerfs across the front rail if there are not
any yet.  This depends on the rail type and stiffness, but some front - to -
back kerfs on the bottom will make the rail more flexible, and could help it
stay flat. 
 
There are more possibilities, but I think these are the most common ways to
treat unusual front rail bedding.
 
At the end you will likely need to reset key height and dip, at least a
little.
 
Don Mannino
 


  _____  

From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of Wesley Hardman
Sent: Monday, February 25, 2008 5:49 PM
To: Pianotech List
Subject: Wurlitzer G411


A customer of mine has a Wurlitzer G411 in which there is approximately .090
inch of clearance in the middle between the front rail of the keyframe and
the keybed.  The space decreases from the middle to each of the ends of the
keyframe.
 
What is the best way to solve this problem without sanding an enormous
amount of wood from each end of the keyframe?
 
Wesley Hardman, RPT
Scottsboro, Alabama

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