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<DIV><FONT face=Arial size=2> Wiw</FONT></DIV>
<DIV><FONT face=Arial size=2> The information I referred =
to in my
previous post of calculating bore distance is very common information =
these days
and a method for avoiding a major ooops in a rebuilding =
job.</FONT></DIV>
<DIV><FONT face=Arial size=2> After 30 years of =
doing hammer
replacement I have had many bad outings as you suggest. Once I did =
as you
prescribed on a old Kimball grand and the original bore was so short the =
shanks
over centered by more than a 1/4 of an inch! Factories make a lot =
of
mistakes and so do hammer prepper. I got weary of crappy and to tight =
boring
which made installation difficult. I realize some are doing that =
more
accurately these days but I'll still bore my own.</FONT></DIV>
<DIV><FONT face=Arial size=2> Also for example with Stwys and =
others but
Stwys are what I check most often the string heights can vary by 2 or =
three m.m
in the tenor treble yet Steinway and others will send you a standard =
bore hammer
of 2 1/8"bass bore and 113/ 16". However the tenor sections =
can be 2
to 3 mm higher in the mid tenor than in the treble and can also be =
sloped one
way or another. The bass as well can have similar problems. =
Some
older Stwy B's and D's had bore lengths of 2&3/8" bass and =
close to 2
" tenor treble so if standard bore hammeres were used in this =
application
regulation,geometry and touchweight problems would be a big deal to your =
client
and your reputation.</FONT></DIV>
<DIV><FONT face=Arial size=2> The real question is how =
accurate do you
want your regulation to be? If you install hammers that over =
strike from
the git go you've already undermined one of the many reasons for =
replacing
the old worn out hammers in the first place which is regulation , =
geometry and
touoch weight do to over centering.</FONT></DIV>
<DIV><FONT face=Arial size=2> In uprights this is less =
critical and
original bore intentions less easy to measure. Usually my rule o f tumb =
is to
observe the bore lengths of not 1 and 88. Note one will always be =
close to
original and note 88 can be determined by adding 3mm above the =
wood
molding.</FONT></DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV style="FONT: 10pt arial">----- Original Message -----
<DIV style="BACKGROUND: #e4e4e4; font-color: black"><B>From:</B> <A
href="mailto:Wimblees@AOL.COM" =
title=Wimblees@AOL.COM>Wimblees@AOL.COM</A>
</DIV>
<DIV><B>To:</B> <A href="mailto:pianotech@ptg.org"
title=pianotech@ptg.org>pianotech@ptg.org</A> </DIV>
<DIV><B>Sent:</B> Thursday, June 28, 2001 7:25 AM</DIV>
<DIV><B>Subject:</B> Re: Fw: hammer replacement</DIV></DIV>
<DIV><BR></DIV><FONT face=arial,helvetica><FONT size=2>In a message =
dated
6/28/01 12:03:58 AM Central Daylight Time, <BR><A
href="mailto:Erwinpiano@email.msn.com">Erwinpiano@email.msn.com</A> =
writes:
<BR><BR><BR>
<BLOCKQUOTE
style="BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: =
0px; PADDING-LEFT: 5px"
TYPE="CITE">It's o.k. to send them hammers and shanks for angles maybe =
but
string <BR>heights and center pin heights vary as do the =
accuracy of the
original <BR>boring. Measure the center pin height from then =
Measure
string height in <BR>each section.Subtract center pin height from =
string
height and it' that <BR>simple and no disapointments later. Ding it =
the other
way is a good way to <BR>possibly compound errors and end up with a =
mess that
won't regulate! Take <BR>measurements.
<BR><BR> </BLOCKQUOTE><BR><BR>Dale <BR><BR>I have replaced hundreds =
of sets
of hammers in my 25 years of rebuilding, and <BR>I have never sent =
Schaff, or
Renner, or any other hammer making company, the <BR>measurements you =
state, and
I have never had a problem. Furthermore, I have <BR>never heard anyone =
mention
at a seminar or convention that these measurements <BR>need to be sent =
in order
to duplicate a set of hammers. Apparently you must <BR>have had a bad =
experience
once, and therefore assume that this is the only <BR>way to order a set =
of
hammers. <BR><BR>I would like to hear others with similar experiences. =
Have I
been lucky for <BR>25 years, or is Dale sending information that is not
necessary? <BR><BR>Willem <BR></FONT></FONT></BODY></HTML>