Once I get a target torque, I'll be able to achieve that, I'm sure. Hi Joe, You might want to tune a harpsichord known to be in good condition vis a vis tuning pin torque in order to get the "feel" to which others have referred. Delignit being so similar to metal in its behavior MAY turn out to be a disadvantage where getting a good feel on the pin torque is concerned, though it will almost certainly solve your structural problem, introduced by the additional pull of the added fourth choir. Alan Eder -----Original Message----- From: Joseph Garrett <joegarrett at earthlink.net> To: David Doremus <algiers_piano at bellsouth.net>; Pianotech List <pianotech at ptg.org> Sent: Thu, Sep 16, 2010 1:11 pm Subject: Re: [pianotech] Harpsichord Tuning Pin Torque? David, Definately not the Beech's fault. Bad design was the culprit! As far as I can determine this one was started in Germany and then completed after he moved to Vancouver B.C. (Probably his first for the Canada location.) It originally had 3 chiors. A fourth choir was added, by Sabatihl, at the request of the owner, ( I suspect a college situation). That extra chior put the tension over the top and the pinblock rolled and warped, BIG TIME!<G> Then to add insult to injury, the current owner decided he was going to fix it and took it completely apart! You don't, even, want the gory details.<G> It's nice to know that these t.pins don't wear out a pin block with the numerous in/out situations, like in pianos. I suspected as much. Once I get a target torque, I'll be able to achieve that, I'm sure. I just don't want the pins to be too tight/loose. I think too tight would be the worst, since the pins are small and more apt to break. And, the tuning device, (hammer/wrench/whatever), does not give a large amount of mechanical advantage, the way I see it.<G> Thanks for all of your assistance. 'preciate it! Regards, Joe Joe Garrett, R.P.T. (Oregon) Captain, Tool Police Squares R I > [Original Message] > From: David Doremus <algiers_piano at bellsouth.net> > To: <joegarrett at earthlink.net>; Pianotech List <pianotech at ptg.org> > Date: 9/16/10 11:17:54 AM > Subject: Re: [pianotech] Harpsichord Tuning Pin Torque? > > Hi Joe, I'll play with the sockets and see if i can't get you a good > measurement. Honestly, there never seemed to be any need to measure > this, you get your pinblock stock drill a few test holes and pick the > one that feels best. Easy. Sabathil was a harpsichord shaped object at > best, you may have a real struggle on your hands. You might be able to > get a tuning hammer with hook from Lutz Bungart at www.fortepiano.com, > he had some very nice ones last time i checked. When you change a string > simply use a paper shim (I use acid free rag paper just to be cautious) > about 1/4 the diameter of the hole and it's no problem. These pins don't > wear out the holes the way piano pins do. Old school pins are tapered > and you can tap them in to tighten them up. I wouldnt blame the beech > for the pinblock problems, it is good material, probably a flaw in > construction. Hope this helps! > > --Dave > > On 9/16/10 10:13 AM, Joseph Garrett wrote: > > David, > > Thanks for the response. It seems, everything on a harpsichord is 'by feel' > > or 'because that's the way it has been done', with little or no R& D. Why > > is that? Confusing to me. I'm resurrecting a Sabatihl that self-destructed > > and was brought to me in several "Baskets"! Whoopee!<G> > > -- > > > -- > Internal Virus Database is out-of-date. > Checked by AVG. > Version: 7.5.560 / Virus Database: 270.12.26/2116 - Release Date: 5/15/09 6:16 AM -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20100916/fcbb253e/attachment.htm>
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