Bill - I have had some success in a few instances by adjusting the catch closer to the strings. It holds the hammer butt up higher for an easier return of the jack. Mark Potter bases-loaded@juno.com On Thu, 28 Dec 2000 07:48:24 -0500 Bill Ballard <yardbird@vermontel.net> writes: > List, > > I have a piano teacher with a legitimate complaint about repetition > on a 20 year-old Baldwin Studio Upright 243. The jack won't make it > back under the butt until the key returns, and sometimes not even > them. The butt and catcher leathers are also a synthetic which i > would describe as 220 grit. > > My test for repetition is to use a finger of the LH as an up-stop, > and to find at what point lowering that stop will prevent to jack's > return > > The problem clears up when I lift the hammer rail for ~1mm lost > motion at the keyboard, but I'm uncomfortable leaving in a lost > motion of this size. > > I did remove the spring rail and bend all springs to that the butt > had a minimum of return from the string (a bend going from 3pm to > 5pm, as viewed from the bass). The repetition didn't appear to have > gained, and now, the action is too slow in very quiet playing. So > regardless of what positive effect weakening the hammer springs in > relation to the jack spring might have, I'll have to backtrack from > this to get a more positive return in quiet playing. > > I also changed one hammer butt for a brand new Baldwin butt with > beautiful smooth buckskin, but once again it wasn't clear the the > dramatic step down in friction with real butt leather helped out the > > jack's return. Starting over with a complete set of new butts is an > option > > Any ideas on improving repetition in this piano? > > > Bill Ballard, RPT > NH Chapter PTG > > "Can you check out this middle C?. It "whangs' - (or twangs?) > Thanks so much, Ginger" > ...........Service Request > +++++++++++++++++++++
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