[pianotech] duplex height reduction

Jon Page jonpage at comcast.net
Thu Jun 17 07:21:04 MDT 2010


I'm working on a S&S O. The X-ratcheting half rounds are working
like a charm. As I was tuning the other day, the light hit the tenor
duplex just right and I noticed that the lowest duplex was so high
that the string loop had a marked negative down bearing.

I removed several loops and ground down the high duplex and
replaced the wire with a bushing cloth bearing. Now that loop is
on the same plane as its neighbors.

This piano once belonged to Karol Rathaus
http://www.classical-composers.org/comp/rathaus

It is a rather nice piano even with the modifications.
-- 

Regards,

Jon Page
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