This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment Oops... And I guess the point of the method I propose is that you can *also* use = it to set up your regulation bench even if you can't access the letoff = adjustments with the action in the piano. In other words, step 1 can = obviously be done very quickly with the action removed. Step 2 would be = with the action replaced. Peace, Sarah ----- Original Message -----=20 From: Sarah Fox=20 To: Pianotech=20 Sent: Tuesday, February 01, 2005 1:32 PM Subject: Re: Let-off in piano 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/c3/b7/20/8b/attachment.htm ---------------------- multipart/alternative attachment--
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