[CAUT] moving capstans question

[Jeff Tanner]

On Sep 21, 2007, at 2:11 PM, Paul T Williams wrote:

> What Renner wip part number is the Hamburg?   -- This might open up  
> a box I can handle!  PW

Don't know that.  Ours are actually Steinway Hamburg, and according  
to invoices were old stock numbers that have now changed.  The way I  
figured the problem out was to switch out some parts with parts I had  
on hand that I knew what they were.  When I put an original teflon  
bushed wippen in there, the action regulated like it ought to (shanks  
weren't resting on the wip cushion) and the down weight dropped to  
the low 50s. So I figured from that that the shanks were pre-84.  I  
tried a brand new prehung NY IMP shank on the adjacent rep and the dw  
dropped into the mid 50s and also regulated well.  That told me the  
reps were Hamburg.

If you have another S&S that works, just switch out parts for one  
unison and see if there's any improvement before you go reinventing  
the thing.  A couple of clues will help.  If the jack is regulated  
forward of the line on the rep lever and jams into the cushion,  
that's a big clue.  You might also find the shanks laying on or very  
close to the rep cushions.  When you change the parts out, if you  
have to turn the capstan one way or the other a LOT to get the hammer  
in line, that's another.

Just wanted to point out that somebody else before you could have  
made a boo boo.  We had the same problem with some rebuilt actions  
over at UGA (though at the time I didn't know how to identify it), so  
I figure there had to have been some communication problems with S&S  
during those days.

Jeff


Jeff Tanner, RPT
University of South Carolina



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