Matthew, Sounds like the whole piano needs a good regulation. I suspected you would run into bobbling hammers by lowering the capstans. I recommend that you start from scratch. Remove all keys and clean under them first. Including the back rail felt. check under the backrail felt carefully to make sure little mouse droppings haven't made there way or something else that might somehow raise the keys. Make sure the keys are free (not sticking). Make sure there is no gunk built on on the balance or front rail pins or capstans, (clean and lub as necessary. Personally, I use brasso) re-install keys., level the keys, adjust the hammer line accordingly, regulate let off and back checks. You may have to increase key heighth and don't forget to also check the key dip. (I'm not stating in any particular order here. I have all I can do to type on the computer I am "borrowing here) Note: Before I regulate the whole action, I usually adjust one note completely in the lower bass and one in the upper treble to what I like. By that I mean, level those keys I'm speaking of and regulate everything on those two or three notes that I've chosen. Once I am satisfied, I then know that I can level all keys to those and regulate everything else accordingly. You won't have to repeat anything that way. The hammers probably need filing and spacing as well after this amount of time. Adjust spoons accordingly after you've completed a full regulation of the rest of the action. Go according to specs, give or take... P.S. My computer is on the fritz so, I'm temporarily borrowing my sons while it gets repaired Forgive any screw ups, I HATE his computer. :-))) Jerry Groot RPT ----- Original Message ----- From: "Matthew Todd" <toddpianoworks at att.net> To: pianotech at ptg.org Sent: Thursday, May 7, 2009 7:05:14 PM GMT -05:00 US/Canada Eastern Subject: Re: [pianotech] Hammer Line Issue I serviced the Kawai today. I adjusted the capstans, letoff and checking. It went really well. Although, when I was doing the letoff, I couldn't get the piano to do 1/8''. When I did 1/8'', and then pressed the note pianissimo, it would double strike, so I did just a little bit more letoff and the issue resolved. Here is a bigger question. After I finished, I played a Bach piece, and one thing I did notice was that it was somewhat difficult for me to play really soft. Is there something more I need to do to obtain this? Or, maybe to state it better, I could play "forte" and even "piano", but to obtain a "mezzo piano" was difficult. What can I do that would help with the dynamics? Thanks again for all your help, TODD PIANO WORKS Matthew Todd, Piano Technician (979) 248-9578 http://www.toddpianoworks.com --- On Thu, 5/7/09, pgmilkie at juno.com <pgmilkie at juno.com> wrote: From: pgmilkie at juno.com <pgmilkie at juno.com> Subject: Re: [pianotech] Hammer Line Issue To: pmc033 at earthlink.net, pianotech at ptg.org Date: Thursday, May 7, 2009, 2:07 PM I can't say for sure, but I suspect that it was caused by moisture swelling the backrail felt. Remove the keys in the section the hammer line is not resting on the hammer rail. Check the back rail it could have warped, could have separated from the key bed and it is raising the hammers. I have seen this on a P22 Yamaha only three years old. Glue and clamp Paul Milkie ____________________________________________________________ Click to get your online credit check report & score. http://thirdpartyoffers.juno.com/TGL2141/fc/BLSrjpTIjD17CsgfkMil2pUXAVbtmxYcGu6FAcRJXWpQYn6dxRYB6hhRL7i/ -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech_ptg.org/attachments/20090508/bc3a670e/attachment-0001.html>
This PTG archive page provided courtesy of Moy Piano Service, LLC