I hear a computer voice in the back ground WARNING WARNING ( Lost in Space ). Do not try that <G>you will make the touch very uneven. Look else where for the solution first. Joe Goss RPT Mother Goose Tools imatunr at srvinet.com www.mothergoosetools.com ----- Original Message ----- From: "Ric Brekne" <ricbrek at broadpark.no> To: <pianotech at ptg.org> Sent: Thursday, July 27, 2006 1:25 AM Subject: Weird ringing - HELP!! > Hi all. > > IMB damper springs are regulated from a touch perspective only. When > this is done correctly there will (always) be enough tension for them to > function properly as dampers. If dampers do not damp well enough > despite proper spring regulation then you are dealing with damper > seating, positioning or perhaps damper mass issues. Much has been > written about this through the years in the archives and I encourage you > to check out some of the material there on the subject matter. > > Cheers > RicB > > Greetings, > > I am a newbie with a whopping 37 months in business. I have > replaced > damper felts and never worried about the tension in the damper springs. The > ringing subsided in the old uprights that I have done, however, the ringing > could have been less. I am doing a damper job right now for a lady and > this time, > I "massaged" the damper springs alittle to renew the tension, > Friday I am going to her place to put the action in and glue the > dampers on the newly sanded blocks. I will see then the fruits (or not) > of just > bending those springs very sliiightly. I did it when I had the levers > off and > out while cleaning/sanding off the old felt in my shop. > Actually, I asked the list here, that same question, about > messaging > the old springs, and I guess no one caught the question, because I got no > response, so I figured I would just go ahead and re-tension them > slightly, Here's > why: I was told at tuning school that you can slightly bend the spring > rail > (hammer) springs to re-juvinate the tension in uprights and also I was told > you can do it to the repittiion springs in a grand. They basically work > the by > same principle as damper springs so I figured why not with the damper > springs. > We shall see, Friday. > > So, I really cant give a definite answer on re-tentioning. I am > guessing. I also know there is a way to measure the tension, but I dont > know what > gage to use or how to use it. This is on my list of things to check out. > > Julia Gottshall > Reading, PA
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