Dang these puzzlers

[David ilvedson]

Something to do with the half-rounds?  Rubbing the 
neighboring key?

David I.

From:           	A440A@AOL.COM
Date sent:      	Tue, 23 Nov 1999 11:02:20 EST
Subject:        	Dang these puzzlers
To:             	pianotech@ptg.org
Send reply to:  	pianotech@ptg.org

> Greetings all, 
>      I LOVE puzzles........no,  actually I hate them.  No,  I luv'em, but 
> then, I hate'em too, when they suddenly hatch in front of me on my own 
> workbench.  I mean,  I like to hear of other's puzzles, but I'm trying to 
> make a living here, and time i$.  If this will save some others time, good.
>     OK,  
> Steinway M # 295777 
> New whippens, shanks, hammers, keybushing .  Kept the original action rails 
> and their cloth, keypins  and accelerating half rounds.   
>    As I finished the first key-level and rough regulation.(2  hours, I was 
> not being real precise here),  I noticed that on soft release in the bass,  a 
> couple of hammers were dropping slowly when they approached rest position.  
> These notes felt ok, at this pre-B/W,S/W,Dn/U, stage of the game, and they 
> regulated and repeated well.   
>     It LOOKED like knuckles rubbing, or hammer felt touching neighbors, maybe 
> even tight key bushings or a problem with the pins, but it wasn't.  It wasn't 
> even a pinning problem .    I thought it must be a geometry problem,  maybe 
> the knuckle was bigger, and pressed on the jack in a weird way as it fell 
> back, etc......  no,  it was not that either. 
>    The puzz-notes were in the bass, and they were A 13 and B 21.  The fix 
> required some disassembly first.  
> ?Ed
> (gee, now that I look at it,  this seems a lot easier than it did when I 
> started taking the action apart. 
> 


David Ilvedson, RPT
Pacifica, CA
ilvey@jps.net