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<DIV><FONT size=2>Ken:</FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=2> I serviced a =
Grotrian of
this era at one time and rebuilt it but I don't recall if it was a 275 =
or a 277
but it was a 9 foot grand.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=2> I fouind that =
the
downbearing was all over the place, under tension the downbearing in the =
bass
was about .125", in the lower tenor it was -.125" (yes it was minus) and =
the
rest was in the ballpark. Upon releasing the tension, the bass =
sprang up
to .310" and the lower tenor came up to .125" and the rest remained =
about the
same. The right amount of downbearing throughout the piano is of =
utmost
importence (providing there is adequate crown) for good
tone. </FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=2> As for the =
tone problem
in the treble ( which on this piano was not good) I had to reset the =
hammer
line. From about G5 to C88 I had to arch the hammer line towards the =
back or
rear of the piano about an 1/8" to 3/16". Y</FONT><FONT size=2>ou =
would
have to experiment on the instrument you are working on to find the =
right
spot. Of the two pianos available to pick from, some of the more
discerning pianists picked the Grotrian after the work was =
done.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=2> Hope this
helps.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=2>Regards Ray</FONT></DIV></BODY></HTML>