When I have a great many keys to ease in a piano, I start by ironing the felt with a heated brass caul in the iron with the heat regulator. I'll second that motion. Alan Eder -----Original Message----- From: Encore Pianos <encorepianos at metrocast.net> To: pianotech <pianotech at ptg.org> Sent: Tue, Jan 25, 2011 9:53 pm Subject: Re: [pianotech] Yammy A couple of thoughts here. When I have a great many keys to ease in a piano, I start by ironing the felt with a heated brass caul in the iron with the heat regulator. Pianotek sells them I believe. You can quickly go through a set in a controlled fashion without overeasing them, and then go back to ease individuals by hand pliers if needed. This may not be the issue however. Yamaha does not use the best quality bushing cloth, and problems can quickly develop in pianos where they are used heavily, such as a music school. Are you hearing any chirping coming from the keys? That's an indication that the glue had wicked through the cloth and the pin is rubbing against the hardened glue. No solution to that other than rebushing. Also, take out some of the worst offenders and look at the bushing cloth in good light. Are you seeing a cupping of the felt around where it rests on the pin? It may be only 2 years old, but it does not mean that the bushings aren't severely worn already. Again, replacement is the only option. In this circumstance, easing the bushings can make it worse, particularly where there is a key offset, such as in the mid treble. I have seen these kind of problems in P-22's for 20 years or more. Why Yamaha persists in using this quality cloth is beyond me. Will Truitt ----Original Message----- From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf Of Mr. Mac's Sent: Wednesday, January 26, 2011 12:01 AM To: pianotech at ptg.org Subject: Re: [pianotech] Yammy On Jan 25, 2011, at 8:54 PM, Richard Ucci wrote: > List, > Local music school with 3 p-22's , 2yrs old. Last tuned March 2010. 60 or more sluggish keys between the 3. > Reamed balance holes and lubed bushings . I can't recall if they have weights or not. > Keys are sticking again, but they did go thru a summer in nj. They keep putting me off about DC systems. > Any suggestion's? Richard, Per your request of any suggestions: I would forgo the concept of DC systems as a solution and concentrate more on what the actual problem is that is causing the keys to stick / be sluggish again. I would also forgo your approach of reaming any more balance rail holes as a solution. If in fact the key bushings are causing this problem, easing is a more practical and long term solution than lubricating. The lubricant you used could have created an additional problem in and of itself. By examining a few of the worst offenders on your next visit, you should easily be able to determine the actual cause for this issue. 60 or more is a huge amount and deserves special attention for the real problem, especially knowing the usual reliability of Yamaha pianos. Keith -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20110126/87977a98/attachment.htm>
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