Hallet & Davis bridge agraffes back

Don drose@dlcwest.com
Fri, 04 Sep 1998 08:17:04 -0600


Hi Richard,

Certainly you could have reverse crown and downbearing at the same
time--just a case of the bridge being tall enough.


At 05:58 AM 9/4/98 -0700, you wrote:
>
>
>Richard Moody wrote:
>
>> I have been trying to figure that one out.  On first investigation in the
>> bass when I removed a string from the agraffe, (here they come out
>> sideways) it seemed to lie below the speaking length hole, when pulled
>> back up.  That would indicate down bearing I think.    I have heard of the
>> reverse crown, but I don't know really how to determing it.  So far I
>> cannot see how any kind of bearing guage can be used.  My guess is that a
>> "reverse crown" would only compound problems in the manufacturing
>> process.. Like how would you have concave ribs?
>>
>> Richard
>
>  ----------------------------------------------
>
>Look underneath the piano.  Stretch a string along side a couple of ribs
and see
>if there is a gap or if the center of the soundboard is decidedly lower
than the
>ends.
>
>Yes, it probably would/did? make manufacturing more difficult, but that
doesn't
>seem to have been an issue.
>
>You concave ribs the same way you convex them.  With a fixture mounted on
your
>table saw.  Just bend the rib the other way.
>
>Del
>
>
>
Regards,
Don Rose, B.Mus., A.M.U.S., A.MUS., R.M.T., R.P.T.
"Tuner for the Centre of the Arts"
drose@dlcwest.com
http://www.dlcwest.com/~drose/
3004 Grant Rd.
REGINA, SK
S4S 5G7
306-352-3620 or 1-888-29t-uner



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