The main problem I see with this one (its about 25 years old) is that there was some noise that I had a little trouble isolating. It sounded a little bit like a loose hammer head or center-pin but different - a little lower pitched. Needling the material (seems like Escaine) helped a lot but may only be temporary. I suppose, replacing the material with bushing cloth would work pretty well. The material seems to be glued all along its surface. Replacing the material but only gluing it in on the ends would also help a lot I would think. Other than that, I'm not sure what the downside is. I will spend more time playing it this week, and will have a better idea of how much I like it. I have a piano teacher and her student stopping by on Friday - we'll see what they think! Ryan On Wed, Jul 8, 2009 at 5:18 AM, Ed Sutton <ed440 at mindspring.com> wrote: > Ryan- > Excellent! > I can't find a mention of this action in Yamaha's web site. > Do you suppose it develops problems in use? > Ed > > ----- Original Message ----- > *From:* Ryan Sowers <tunerryan at gmail.com> > *To:* Ed Sutton <ed440 at mindspring.com> ; pianotech at ptg.org > *Sent:* Wednesday, July 08, 2009 12:57 AM > *Subject:* Re: [pianotech] Interesting action on Yamaha YUA > > It plays well at very low levels. I uploaded a short video clip showing at > which point the note stops playing. Of course with the computer its a little > hard to compare with real life, but it seems to play at very quiet levels > better than most uprights. > > http://www.youtube.com/watch?v=9dBfDkw8Jc8 > > It is also an example of my new minimalist composition. Enjoy... > > On Tue, Jul 7, 2009 at 4:40 PM, Ed Sutton <ed440 at mindspring.com> wrote: > >> Ryan- >> >> As you play more and more softly, every action reaches a failure point >> where the response becomes erratic, so there is a limit on how quietly you >> can play dependably. Alexander and I are wondering if this action is >> different from a standard Yamaha vertical action in this respect. Perhaps it >> repeats faster at a cost of less pianissimo response range? >> >> The purpose of weights in the back of vertical keys is usually to get the >> key back down so that the jack can reset. If you add keyweight to increase >> touchweight, you are pumping lead that doesn't do anything to the overall >> action response. If you add a small amount of weight to the hammer, it will >> increase the dynamic touch of the piano, and perhaps improve the sound as >> well, even thoughj the static downweight will still measure low. >> >> Ed >> >> ----- Original Message ----- >> *From:* Ryan Sowers <tunerryan at gmail.com> >> *To:* pianotech at ptg.org >> *Sent:* Tuesday, July 07, 2009 6:12 PM >> *Subject:* Re: [pianotech] Interesting action on Yamaha YUA >> >> It does have a very light touch. I just took some downweight >> measurements and it's around 43-45 grams. Upweight is around 23 grams so the >> friction is around 10. I'm contemplating adding some weight at the back of >> the keys but I kind of like how it plays. If somebody is looking for a light >> action this would be the one. >> >> Alex: I don't understand your analogy to the grand action and feeling of >> lack of gravity. When you refer to spring tension being neglibible, do you >> mean the hammer return spring or the jack spring? >> >> On Tue, Jul 7, 2009 at 10:49 AM, Alexander Lass <lasspiano at gmail.com>wrote: >> >>> Ed, >>> >>> This is the first question that came to mind when I saw the design. To >>> make it analogous to a grand action, I think the feeling would be similar to >>> not having any gravity acting upon the hammer assembly until the point of >>> let-off. Perhaps the spring tension is such that any sensation is >>> negligible, but it does pose an interesting question. >>> >>> Ryan, any thoughts? >>> >>> Alex >>> >>> On Mon, Jul 6, 2009 at 9:38 PM, Ed Sutton <ed440 at mindspring.com>wrote: >>> >>>> Ryan- >>>> >>>> What is the effect on pianissimo playing? >>>> >>>> Ed Sutton >>>> >>> >> >> >> -- >> Ryan Sowers, RPT >> Puget Sound Chapter >> Olympia, WA >> www.pianova.net >> >> > > > -- > Ryan Sowers, RPT > Puget Sound Chapter > Olympia, WA > www.pianova.net > > -- Ryan Sowers, RPT Puget Sound Chapter Olympia, WA www.pianova.net -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20090708/0bbbf5c2/attachment.htm>
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