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<p>Dave Nereson wrote:
<blockquote TYPE=CITE><font face="Times New Roman">So... I ask you...
why we are supposed to measure down to the balance</font>
<br><font face="Times New Roman">rail, and up to the capstan and at the
same time not take into</font>
<br><font face="Times New Roman">consideration the horizontal deflection
of their angles before figuring</font>
<br><font face="Times New Roman">their ratio ?</font>
<p><font face="Times New Roman">RicB</font>
<div class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">I
don’t know. But in this month’s Journal, on page 36, that’s where it shows
to measure. ;)</font></div>
<div class="MsoNormal" style="MARGIN: 0in 0in 0pt"><font face="Times New Roman">-David
Nereson, RPT, Denver</font></div>
</blockquote>
<p><br>I think if you read the text of the article you will find it quite
purposely avoids defining the << correct >> method of measuring the
arms of the levers.
<p>In the second paragraph two key sentences
<br>
<blockquote>"...the Stanwood Strike Weight Ratio (R) can be expressed as
the product of the appropriate individual leverage ratios of the
three levers of the action: the key stick, the wippen, and
the hammershank"</blockquote>
and
<blockquote>"This value for the overall ratio of the action can be arrived
at by measuring the appropriate lengths of the arms of each of these levers
in much the same fashion as the overall action ratio traditionally
has been calculated."</blockquote>
further a footnote which states the following.
<blockquote>"It must be noted that there are several conventions for measuring
hammer shank ratio and it has been long debated which of these is most
useful. Regardless of which convention is used at any given time, it is
important to agree on which set of parameters are being discussed so as
to assure a common ground for meaningful discussion."</blockquote>
--
<br>Richard Brekne
<br>RPT, N.P.T.F.
<br>UiB, Bergen, Norway
<br><A HREF="mailto:rbrekne@broadpark.no">mailto:rbrekne@broadpark.no</A>
<br><A HREF="http://home.broadpark.no/~rbrekne/ricmain.html">http://home.broadpark.no/~rbrekne/ricmain.html</A>
<br><A HREF="http://www.hf.uib.no/grieg/personer/cv_RB.html">http://www.hf.uib.no/grieg/personer/cv_RB.html</A>
<br>
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