bobbling hammers-1993 Kranich&Bach

[Lance Lafargue]

Should I just set height by eyeball in relation to the keyslip height? 
I'll try this too! Thanks.
Lance Lafargue, RPT
New Orleans Chapter
Covington, LA.
lafargue@iamerica.net

----------
> From: ralph m martin <rmartin30@juno.com>
> To: pianotech@ptg.org
> Subject: Re: bobbling hammers-1993 Kranich&Bach
> Date: Monday, February 02, 1998 6:22 PM
> 
> HI Lance
> When I get one like this...I work backwards. Set key height and dip then
> find a hammer strike distance that works. Try a couple of keys first.
> I'll bet you get it.
> 
> just a thought!
> 
> Ralph Martin
> 
> On Mon, 2 Feb 1998 16:48:31 -0600 "Lance Lafargue"
> <lafargue@iAmerica.net> writes:
> >Dear List,
> >I GIVE UP!  I've been trying to help a customer of mine who bought a 
> >cheap
> >Kranich & Bach (made in Europe, 1993, sold by Baldwin) 42" upright.  
> >This
> >piano had double striking or bobbling hammers when I first saw it.  To 
> >be
> >brief and to the point; I added let-off distance and dip, still some
> >bobbling on soft blows, added more, still bobbling at times, then I 
> >added
> >key height/dip, adjusted checking, and unless you are VERY deliberate 
> >and
> >get to the very end of each key stroke, IT STILL DOES IT occasionally.
> >Maker won't help, they said (basically) that's what you get for buying 
> >a
> >cheap piano.  Now, the piano is no fun to play and you still get the
> >occasional bobble if you're not careful.  
> >
> >I have come across this problem hundreds of times over the years and 
> >have
> >always been able to regulate it out, but I can't seem to get this one 
> >to
> >stop without regulating it out of the comfort zone.  I remember some
> >Samicks and Yamahas in the low tenor had this problem due to the angle 
> >of
> >the surface on the butt where the jack contacts.  Any ideas?  Thanks 
> >very
> >much!
> >Lance Lafargue, RPT
> >New Orleans Chapter
> >Covington, LA.
> >lafargue@iamerica.net
> >
> 
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