K52 Damper Felts on an 1883 Model F

[Bill Ballard]

At 9:59 PM -0400 5/8/02, Farrell wrote:
>Bill Spurlock has a paper on making your own custom high-performance 
>upright dampers. I've been using >his techniques on the few uprights 
>that I have done. Great results. Make them yourself and then you 
>can >put whatever felt, however thick, wherever you need it!
>
>http://www.spurlocktools.com/id36.htm
>
>Vertical Damper Replacement:
>This nine page pamphlet presents step by step methods for diagnosing 
>damper problems, re-designing >dampers to improve poor damping 
>common in the bass and tenor, a unique method of 
>pre-adjusting >damper heads prior to installation of new damper 
>felt, and simplified methods of damper head and spoon >regulation. 
>$2.50

Thanks, Terry.

In the future, I'll make my own sets. But even then, I'll still be 
facing the same two questions I now have. #1) Just how short can they 
be be (everything else be properly prepared) and still provide prompt 
damping in these tall uprights. The original was 1-5/8", new new 
Steinway and Yamaha big verticals are an inch longer. #2) Just how 
far from a 50-50% centering on the damper block can these felts stray 
and not fall apart.

Both of these articles originally appeared in the Journal, and are a 
part of my thinking.

Bill Ballard RPT
NH Chapter, P.T.G.

"Filing the bridgepins sure puts a sparkle on the restringing, but is 
best done before the plate is re-installed"
     ...........shop journal entry
+++++++++++++++++++++