Fazioli Follow-up

[Thomas Cole]

I had a chance on Friday to come back on the Fazioli F183 with the 
damper problem. The new owner had complained of buzzes coming from 
mid-range dampers on slow release of the keys, made worse when playing 
on shift. The affected notes were in the range of B3 to G#4, all 
flat-dampered notes.

Since damper timing and follow were both good, I removed the 10 dampers 
noted above, checked string level and found that several needed some 
attention. Then I replaced just the back flat damper on B3 and noticed a 
big improvement so replaced all the back felts up to G#4, leaving the 
front flat-style felt alone. This change obviously quickened the damping 
effectiveness significantly, but still some hints of buzzing so did some 
damper head tilting, fore and aft, and checked for wedge felt mating to 
the strings. For security I turned out the shift stop screw to keep the 
hammers striking all strings of the unisons. My guess is that hitting 
only two strings causes the unstruck string to vibrate out of phase, 
challenging the dampers.

Next visit I'll trim the corners of the wedges if there's need for more 
quieting. At that time I can also voice between the string grooves.

One thing I noticed was that there were no springs on the underlevers. 
Seems like Fazioli missed out on an obvious and inexpensive way to 
improve damper effectiveness.

Tom Cole
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