[pianotech] Touchweight: Re: half punching & figuring FW

[David Love]

You could also remove the bearing, add a shoe to help stiffen the key and then reinstall flat punchings with a shim to correct the key ratio.  Bit of work though.    In that case it might be easier to move the capstan although sometimes the keys do need to be stiffened.  

 

David Love

www.davidlovepianos.com

 

From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf Of Barbara Richmond
Sent: Monday, June 27, 2011 12:28 PM
To: pianotech at ptg.org
Subject: Re: [pianotech] Touchweight: Re: half punching & figuring FW

 

I heard someone mention peeling up the cloth on the bearing and slicing the wood at the hole to make a steeper angle--making it more triangular on one side than rounded.  Then reattach the cloth.

Haven't done it myself.

Barbara Richmond, RPT
near Peoria, Illinois

  _____  

From: "David Love" <davidlovepianos at comcast.net>
To: "Jerry Cohen" <emailforjc at yahoo.com>, pianotech at ptg.org
Sent: Monday, June 27, 2011 2:15:55 PM
Subject: Re: [pianotech] Touchweight: Re: half punching & figuring FW




I can’t think of one.  The bearing focusing the fulcrum at the apex of the bearing so shimming the one side of the balance rail doesn’t seem like it will work.

 

David Love

www.davidlovepianos.com

 

From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf Of Jerry Cohen
Sent: Monday, June 27, 2011 11:17 AM
To: pianotech at ptg.org; ptg_touchweightne at egroups.ptg.org
Subject: Re: [pianotech] Touchweight: Re: half punching & figuring FW

 

David,

On "regular" accelerated actions with the bearings, is there any way to apply the veneer strip to change the key ratio?

 Thanks,

 

Jerry Cohen, RPT

NJ Chapter

  _____  

From: David Love <davidlovepianos at comcast.net>
To: pianotech at ptg.org; ptg_touchweightne at egroups.ptg.org
Sent: Monday, June 27, 2011 1:53 PM
Subject: Re: [pianotech] Touchweight: Re: half punching & figuring FW

Interesting isn’t it, it’s an “accelerated action” (or so it’s stamped on the action frame) without the bearings.  No I didn’t remove them.  Key lead positions are consistent with the accelerated actions.

 

David Love

www.davidlovepianos.com

 

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