Hi Richard, I don't have the answer but I do have a story! :-) Back several years ago, I had to do a regulation on a Yamaha 9' that had been sent in for a Yamaha artist recital (Frederic Chiu). It'd been messed up by "someone" and was in terrible shape. I did it the usual way, like you mention below and everything worked great and he loved it. Shortly after that, a tech that used to work for Yamaha came to Houston and in the store, redid everything I'd done because evidently, Yamaha sets the glides that way on purpose. He said he was trying to get the "method" written about but so far, it hasn't been done, as far as I know. I don't know what the secret is but until I know differently, I'll continue to set the glide bolts in the "usual" way. It's worked that way for many pianos for many years! Avery >What I dont get is why the Balance Rail needs to be elevated so much. >And how are we supposed to determine the proper balance rail height to >begin with ? I was always told that glide bolts need to just make >contact with the key bed... not to lift the whole darn middle of the key >frame up. > >Explainations please ? > >RicB > >-- >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 > > >_______________________________________________ >pianotech list info: https://www.moypiano.com/resources/#archives
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