<!doctype html public "-//W3C//DTD W3 HTML//EN"> <html><head><style type="text/css"></style><title>Re: No Power Yamanamas</title></head><body> <div>Hi Richard,</div> <div>Check out the back rail - I've found many Yamahas that are not bedded because the keyframe is not contacting the dag blocks.  A piece of veneer on the keyframe will take care of the problem (thanks to Roger Jolly for the tip!).</div> <div><br></div> <div>Respectfully,</div> <div>Jon</div> <div><br></div> <div><br></div> <blockquote type="cite" cite>I have looked at bedding several times on this one example I have at the UiB. In the middle section there is defininatly a slight problem and always has been. And no matter what I do it seems to stay. I wrote on this a couple years back and we got into a discussion about the hammer rail flexing.<br> </blockquote> <blockquote type="cite" cite>But bedding specific, the middle section displays some minor tendancy for neighborhing hammers to jump a bit when a key is played hard. Not very much mind you. The top two sections show none of this. And the bass is quite solid as well, tho I have had to adjust the bedding on occasion to assure that.<br> </blockquote> <blockquote type="cite" cite>Yet the uneveness of that description does not match the eveness of this lack of power sensation. That is evident over then entire keyboard, and if it is more pronounced anywhere, it would be in the two top sections me thinks. It does not seem like the proximity of action brackets has any affect.<br> </blockquote> <blockquote type="cite" cite>The bedding question is a logical place to look, as is the hammer rail flexing thing to be sure. Thats part of what makes me scratch my head on this one. Those things seem well within acceptable tolerances.<br> </blockquote> <blockquote type="cite" cite>RicB<br> </blockquote> <blockquote type="cite" cite>Marcel Carey wrote:<br> <blockquote type="cite" cite> <font size="-1">Hi RicEven if everything has been checked and rechecked, could the keybedding be at fault? Check the keybedding with the pedals depressed (the keybed sometimes flex enough to change the bedding). Either that or the hammer rail is bending. Is that sensation the same all over the keyboard, or more concentrated to areas between the action's brackets?</font> <font size="-1">Just other thoughts,</font> <font size="-1">Marcel Carey, Sherbrooke, QC</font><br> </blockquote> </blockquote> <blockquote type="cite" cite><br>  <br>  <br> </blockquote> <blockquote type="cite" cite>--<br> Richard Brekne<br> RPT, N.P.T.F.<br> UiB, Bergen, Norway<br> <a href="mailto:rbrekne@broadpark.no">mailto:rbrekne@broadpark.no</a><br> <a href="http://home.broadpark.no/~rbrekne/ricmain.html" >http://home.broadpark.no/~rbrekne/ricmain.html</a><br>  </blockquote> <div><br></div> <div><br></div> <x-sigsep><pre>-- </pre></x-sigsep> <div>Jon Ralinovsky<br> Piano Technician<br> Department of Music<br> Miami University<br> 513/529-6548</div> </body> </html>