This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment Hi Jason, You wrote: How DO you regulate hammer height and letoff in the grand = piano? <snip> In some situations I have had to do an on-site = regulation where there is no good, flat surface for the action, so I've = tried to do it in the piano. <snip> I often have to do stuff without the proper equipment, because it's just = not worth it to me (as an amateur) to invest in elaborate tooling. I = just did a fairly good preliminary regulation job (preliminary because I = have other work ahead of me) without a good bench using the following = method (which does not require a flat surface): (1) Raise the letoff buttons on the end notes of each section, until the = hammer blocks against the string. (2) Adjust the capstans on these notes, so that the hammers *just* reach = the strings when the key bottoms out. Of course the force on the key = *does* matter, so find a way to be consistent. The hammer bumping = against the string, ringing it, and then damping it, is an excellent = aural indicator of having achieved the desired hammer height. (3) Remove the action and put it on the best surface available. (4) Section at a time, position a straight edge so that the hammers on = the section ends *just* meet it when the keys are bottomed. Lower the = straight edge by 1/16". (5) For each note, raise the letoff button until the hammer blocks. = Depress a the key, and lower the letoff button until the jack kicks out = and releases the hammer. (6) Adjust hammer height and drop in a similar manner. This is a very quick and easy way to set up for regulation, and I found = it to be quite accurate, even on less than optimal surfaces. To do my = regulation, I just set the action on top of a piano lid, with a blanket = to cushion it. :-) Peace, Sarah ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/cb/2c/6a/00/attachment.htm ---------------------- multipart/alternative attachment--
This PTG archive page provided courtesy of Moy Piano Service, LLC