Single Strings and bearing

[Jon Page]

At 10:19 PM 6/16/2002 -0700, you wrote:
>The last six unisons on the tenor bridge are plain trichords.  Each is a
>different gauge: 18, 18 1/2, 19, 19 1/2, 20, 21.  Thus each unison consists
>of a bichord from one continuous piece of wire that goes around hitch pin
>and back to the tuning pin and one single string.  Because the wrap on the
>single string rests on the plate, it raises the core of the wire slightly so
>that if you measure the angle of inclination toward the bridge, it is
>running downhill from the hitchpin to the bridge.  Thus, if you measure the
>bearing based on the single strings in the unison, the bearing measures
>negative.  The overall bearing on the bridge is still positive when all
>strings are taken into consideration.  I am wondering if I might anticipate
>any problem, perhaps, from these single strings not seating properly.  Of
>course, the more I try to explain this, the more I'm inclined to just forget
>about it.  But if you have any comments, please.
>
>David Love


If you mean the 'tie-off' or twisted portion of an added single plain wire 
will sit
on the plate thus raising the wire and reducing the down bearing then by
simply installing two unisons each of 18, 19 & 20 will solve the all concerns
in regards to like-sized wire on the unisons and downbearing. With no 
alterations
done to the plate.

Would the inclusion of these half-sizes really be that much of an improvement?
I doubt it.
Regards,

Jon Page,   piano technician
Harwich Port, Cape Cod, Mass.
mailto:jonpage@attbi.com
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