Thanks, Joe! Alan Barnard Salem, MO Joshua 24:15 ----- Original message ---------------------------------------- From: "Joseph Garrett" <joegarrett at earthlink.net> To: pianotech <pianotech at ptg.org> Received: 11/29/2006 1:35:23 AM Subject: Re: Key Cover Problem >Alan asked: "I have a music teacher customer with a Yamaha grand that has a >poorly counter-balanced (or some problem) fallboard. It has made several >credible attempts to chop hands off young students. > >It appears to have never had any sort of close-retarding mechanism, let >alone a Soft-Close device. > >Tried Googling up a solution, 'cause I know it's been on the list, but I >got endless chains of stuff and no answers (and no hits when I added >"site:www.ptg.org" for some reason.) > >Someone help me out here, please. What's a good fix? > >Alan, >I'd install a Steinway spring. In case you don't know what that is, it's a >spring about 3-4" long w/a very minor spring bend. It is installed IN the >cavity case, in the arc of the travel of the back of the Fallboard. As the >fallboard is opened the spring, (with it's tapered curve), the resistance >is increased. If it is installed correctly, when the fall board is in it's >full open position the back of the fallboard will have JUST passed the top >of the spring curve. To close the fallboard, it will take quite a bit of >umph to get the fall board to start closing. Difficult to explain, but a >simple installation. Just looked it up in the Schaff catalogue. It's Number >960 on page 124. >Regards, >Joseph Garrett, R.P.T. >Captain, Tool Police >Squares R I >-- >No virus found in this incoming message. >Checked by AVG Free Edition. >Version: 7.5.430 / Virus Database: 268.14.19/555 - Release Date: 11/27/2006 6:09 >PM
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