Aside from rechecking those same, and any and all other friction related issues, you cant do anything unless you are willing to change some weight factor, or the ratio of the action somehow. Do a few sample keys to get SW,FW, UW, DW and perhaps the problem may become a bit more clear. Cheers RIcB Carol Beigel wrote: > What could make the downweight of a good, 2 year old piano action change in > less than two weeks? About 3 weeks ago, the complaint was that this Boston > grand piano action was causing the owner, who practiced about 5 hours a day, > was getting pains in his wrist. However, when he practiced on his church > piano, a Steinway grand, he had no pain. > > The starting downweight was over 65 grams. After I eased the balance > centers, cleaned the center pins, put teflon powder on the knuckles, > adjusted the repetition heights and the jacks, the downweight was a pretty > even 52 grams and the guy was happy. > > Two weeks later, the weight was back over 60 grams and his wrists are > hurting.. Solutions or suggestions? > > Carol Beigel > > _______________________________________________ > pianotech list info: https://www.moypiano.com/resources/#archives -- Richard Brekne RPT, N.P.T.F. UiB, Bergen, Norway mailto:rbrekne@broadpark.no http://home.broadpark.no/~rbrekne/ricmain.html http://www.hf.uib.no/grieg/personer/cv_RB.html
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