Tim, Could you describe how you sort shanks by sound? I've done vertical shanks that way for a long time by just dropping them on the table and listening. Grand shanks, though, are "contaminated" by the flange connection, so dropping them doesn't necessarily give a good "plink" or "plonk." I suppose by holding the flange and letting the shank fall onto the table, you'll get a comparable "plink." Alan -- Alan McCoy, RPT Eastern Washington University amccoy at mail.ewu.edu 509-359-4627 > From: Tim Coates <tcoates1 at sio.midco.net> > Reply-To: "College and University Technicians <caut at ptg.org>" <caut at ptg.org> > Date: Sun, 17 Feb 2008 21:55:24 -0600 > To: "College and University Technicians <caut at ptg.org>" <caut at ptg.org> > Subject: Re: [CAUT] Shank to Hammer weight spreadsheet > > Keith, > > Listening and sequencing the shanks is very fast if done correctly. > I don't agree with Grotian's sequencing method. I've been sorting > low pitches to the bass end and high pitches to the top for over > twenty years. One basic principle I follow is a low pitched knock > associated with a movement within the piano reduces power. It is one > of the main reasons I change front rail felt punchings. Hard felt > punchings create a low knock that robs power from the sound. I find > the same to be true with the pitch of the shanks. > > But as I have said before: to each his own. Grotian does it their > way and that's fine. I know what works for me. > > Tim Coates > > > On Feb 16, 2008, at 8:07 PM, Keith Roberts wrote: > >> My question is, if you are weighing the whole shank and flange, how >> do you know the distribution of the difference in weight? If 90% of >> the weight difference is from the knuckle through the flange, the >> SW wouldn't change much and so the presumed evening out of the >> weights is not there. The distribution of the mass could vary from >> shank to shank at all the different weights. >> >> I like the idea of listening to the sound of the shanks. A thinner >> light shank should produce a higher sound. Very quick too. >> >> Keith Roberts >> >> On Feb 16, 2008 5:48 PM, Jon Page <jonpage at comcast.net> wrote: >>> It takes too long. Just dry fit the hammers to the shanks >>> right after you've tapered them with the table saw ... >> >> I don't think you get the idea. Mating a shank's SW with a >> hammer weight will require less hammer mass alteration >> to achieve a smooth SW curve. >> -- >> >> Regards, >> >> Jon Page >> >
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