<<Are you suggesting that tuning pin movement is the source of pitch instability after pitch correction?>> Nope. It's the change in TENSION precipitated by the excessive pin movements (during the PR) that cause instability. When large amounts of tension are added,(which can and often is THOUSANDS of pounds!) the piano must distribute this tension; it does not do so immediately, as we know. Similarly, after installing a DC I will always let the piano aclimate for at least two weeks before tuning, as the pitch will almost always drop, sometimes substantially). IF the client is going to play the piano only occasioanlly, I will then schedule the next tuning in 6 months . Terry Peterson ----Original Message Follows---- From: Don <pianotuna@yahoo.com> Reply-To: Pianotech <pianotech@ptg.org> To: Pianotech <pianotech@ptg.org> Subject: Re: How to explain a pitch adjustment..and! Date: Tue, 20 Dec 2005 21:53:44 Hi Terry, Are you suggesting that tuning pin movement is the source of pitch instability after pitch correction? At 04:24 PM 12/20/2005 -0800, you wrote: >Depending on the amount of PR, ususally more than 12C, I always schedule a >"follow-up" tuning in 1-3 months, explaining that after restoring all that >loststring tension, the piano now must "settle" and adjust to that added >tension, and it some shifting of will occur. So the follow-up is crucial in >building long term stabilty. And that tuning will leave the piano much more >stable because tuning pin movement will be much smaller than during the >initial PR and tuning. Again, never a problem. > >Terry Peterson Regards, Don Rose, B.Mus., A.M.U.S., A.MUS., R.P.T. Non calor sed umor est qui nobis incommodat mailto:pianotuna@yahoo.com http://us.geocities.com/drpt1948/ 3004 Grant Rd. REGINA, SK, S4S 5G7 306-539-0716 or 1-888-29t-uner _______________________________________________ pianotech list info: https://www.moypiano.com/resources/#archives
This PTG archive page provided courtesy of Moy Piano Service, LLC