ah...possibly the action is not solidly held in the piano and moving up and down a tiny amount with the pedal? David Ilvedson, RPT Pacifica, CA 94044 ----- Original message ---------------------------------------- From: "Gregor _" <karlkaputt at hotmail.com> To: pianotech at ptg.org Received: 5/13/2009 1:47:58 AM Subject: Re: [pianotech] lubricating damper springs? >Thank you for all your answers. >The felts of the dampers levers are really clean. Also the rod has no gunk and looks >clean too. The damper springs as well. It´s a Renner action from 1986 and the >whole piano is well-kept and of high quality. The sounds have nothing to do with the >pedal or the grommet because the action was outside of the piano. I can´t isolate >the source of the sound. Maybe the springs, maybe the rod-felt-joint. >One thing I didn´t think about are the action brackets. Maybe they are loose. >Unfortunately the piano is at a customers home, not in my workshop, so I can´t >check it right now. >Paul, what do you mean by monkey? There was no monkey, but the customer has a >cat :-) >Gregor >To: pianotech at ptg.org >Date: Tue, 12 May 2009 15:40:21 -0400 >From: wimblees at aol.com >Subject: Re: [pianotech] lubricating damper springs? >Gregor >If the spring groove has graphite, then you should only use more graphite. Putting >fat in the groove will attract dust, which will gum up, and cause sluggishness in the >spring. >The other cause of the noise could be where the rod pushes the levers. Remove a >damper lever, and if you see that the felt is black and corroded, you will need to >brush off the black stuff, or turn the felt strip around. (remove it, and put the >bottom where the top was). Just polishing the rod will not be enough to solve the >squeaking problem. >In some cases, the felt will be worn through, and the rod is actually rubbing against >the wood of the lever. In that case you'll need to replace the felt, or if you don't >have any to replace, turn it around. >Willem (Wim) Blees, RPT >Piano Tuner/Technician >Mililani, Oahu, HI >808-349-2943 >Author of: >The Business of Piano Tuning >available from Potter Press >www.pianotuning.com >-----Original Message----- >From: Gregor _ <karlkaputt at hotmail.com> >To: pianotech at ptg.org >Sent: Tue, 12 May 2009 2:49 am >Subject: [pianotech] lubricating damper springs? >List, >I have a problem with annoying sounds when depressing the right ped >al of an upright very slowly. It turned out that it comes from the dampers or the rod >that lifts the dampers. Usualy I fix it with lubricating the springs and the rod and the >hinge-joints of the rod. But in this case it did not help. The spings are not embedded >in felt or leather but in graphitated wood. I used stag fat for the dampers and the >rod, which usualy helps allways (for the hinge-joints I used Protec CLP). Was that a >mistake instead of using graphit for the spring embedding? I mean, if new graphit >were the only way to solve such a problem, then a future application of graphit >could be hindered by the fat on the springs. But I am not shure about that. >Any ideas about the source of these sounds and the solution of that problem? It´s >an Ibach C upright from 1986 with a Renner action. It seems that the bass dampers >are the main culprits. >Gregor >Invite your mail contacts to join your friends list with Windows Live Spaces. It's >easy! Try it! = > We found the real 'Hotel California' and the 'Seinfeld' diner. What will you find? >Explore WhereItsAt.com. >_________________________________________________________________ >Windows Live™: Keep your life in sync. Check it out! >http://windowslive.com/explore?ocid=TXT_TAGLM_WL_t1_allup_explore_012009
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