<HTML><BODY style="word-wrap: break-word; -khtml-nbsp-mode: space; =
-khtml-line-break: after-white-space; "><DIV><DIV>On Nov 14, 2005, at =
11:25 AM, Barbara Richmond wrote:</DIV><BR =
class="Apple-interchange-newline"><BLOCKQUOTE type="cite"><SPAN =
class="Apple-style-span" style="border-collapse: separate; =
border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; =
font-size: 12px; font-style: normal; font-variant: normal; font-weight: =
normal; letter-spacing: normal; line-height: normal; text-align: auto; =
-khtml-text-decorations-in-effect: none; text-indent: 0px; =
-apple-text-size-adjust: auto; text-transform: none; orphans: 2; =
white-space: normal; widows: 2; word-spacing: 0px; "><DIV><FONT =
face="Arial" size="2"><SPAN class="Apple-style-span" =
style="font-family: Arial; font-size: 10px; =
">Fred,</SPAN></FONT></DIV><DIV><FONT face="Arial" =
size="2"></FONT> </DIV><DIV><FONT face="Arial" size="2"><SPAN =
class="Apple-style-span" style="font-family: Arial; font-size: 10px; =
">Ah. When I started at IWU, I followed a technician who was hard of =
hearing--so he couldn't hear the Teflon clicking the faculty complained =
of. His solution was to pin everything fairly tight. =
<wince> Anyway, I repinned the worst of them, but they were =
still on the heavy side. There was no rebuilding budget at the time =
(and David Stanwood was just coming out with his touchweight stuff when =
I moved away). I simply said that I had done what I could until the =
action could be replaced.</SPAN></FONT></DIV><DIV><FONT face="Arial" =
size="2"></FONT> </DIV><DIV><FONT face="Arial" size="2"><SPAN =
class="Apple-style-span" style="font-family: Arial; font-size: 10px; =
">So, if there isn't a touchweight issue with a Teflon repetition and =
a felt hammer flange, the bulk of the problem must be in the hammer =
shank/flange. Did the knuckle mounting distance change from Teflon to =
felt or was it just the nature of the Teflon? Or, did the knuckle =
size change (or whatever)?</SPAN></FONT></DIV><DIV><FONT face="Arial" =
size="2"></FONT> </DIV><DIV><FONT face="Arial" size="2"><SPAN =
class="Apple-style-span" style="font-family: Arial; font-size: 10px; =
">Barbara Richmond</SPAN></FONT></DIV></SPAN></BLOCKQUOTE></DIV><BR> =
I'm not up on the exact history, but the geometry change (knuckle =
placement for the most part, but other changes as well) occurred during =
the early 80's, around the same time as the switch from teflon II to =
impregnated felt. There was probably a period of transition when it =
would be anyone's guess what combination you might find. With the =
hybrids, you would expect less effect on touchweight from centerpin =
friction of wipps than from hammershanks. Tight repetition centers are =
rarely a problem, usually a virtue.<DIV> For the old teflons, =
it's hard to figure out just what is the issue. In my teflon B's from =
the mid 60's, I also have residual graphite grease on the knuckles. =
There are just too many factors, and it isn't worth the trouble (to me) =
to sift through them. <DIV> The clicks in my B's are from =
those original teflon inserts - the small smooth ones without the ribs - =
clicking against the wood of the shank, for the most part. Replace =
insert, ream, install pin, check friction, swear, un-pin, re-ream, =
re-install pin, check again, cuss at Steinway for providing reamers that =
aren't the right size. It's a vicious cycle. I've tried the intermediate =
reamers (.0005 increments) from Pianotek, and they make it too =
loose.</DIV><DIV> Bottom line: since I can' t get that friction =
within parameters, and since the knuckle/rep top is problematic, and =
wipp cushions are worn, yadda, yadda, I just call it good enough and =
look forward to the year I get around to replacing =
parts.</DIV><DIV><BR><DIV><DIV>Regards,</DIV><DIV>Fred =
Sturm</DIV><DIV>University of New Mexico</DIV><DIV><A =
href="mailto:fssturm@unm.edu">fssturm@unm.edu</A></DIV><DIV> "Art is =
not a mirror held up to reality, but a hammer with which to shape =
it." </DIV><DIV>Bertold Brecht</DIV></DIV><BR =
class="khtml-block-placeholder"></DIV><DIV><BR =
class="khtml-block-placeholder"></DIV></DIV></BODY></HTML>=