[pianotech] was curve now glide

[Dale Erwin]

My Main objective with glide bolts is to keep them bedded with out lifting the front rail That said there has been a fair amount of discussion on this list about the tonal affects of tweaking the key frame just a little bit and I have tweaked them judiciously on many occasions. Sometimes to gain just a bit more key travel/dip in a hurry or temporarily until other measures can be arranged.  The other side benefit from this in my mind id that it may keep the bedding bolts bedded from season to season.  Seems like every new Steinway I see has never had the bolts bedded. 
  I personally favor setting the bolts with the keys off and stack screwed (as per Yamahas method ) on to un -load the frame.  Then when the keys go on there is a certain sure bedding and the weight of the keys insures that a bit.
 Dale

 

 

Dale S. Erwin
www.Erwinspiano.com
Custom piano restoration
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209-577-8397
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-----Original Message-----
From: Gene Nelson <nelsong at intune88.com>
To: pianotech at ptg.org
Sent: Thu, Oct 14, 2010 9:02 am
Subject: [pianotech] was curve now glide


Thanks to all for so much information about key leveling.
I am curious if glide bolt adjustment is taken into consideration in regard to curved key leveling?
In approaching a leveling job it seems wise to raise all the glides and readjust them before leveling.
Many key frames are flexible enough that if the glides are lowered slightly the balance rail will lift while the front rail remains bedded.
On a flexible frame one could use the glides maybe to help achieve a curved key level? Anyone do this?
Gene
 
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