Joe Didn't you know that Newton died about 2 years ago? Wim -----Original Message----- From: Joe And Penny Goss <imatunr at srvinet.com> To: College and University Technicians <caut at ptg.org> Sent: Mon, 29 May 2006 12:54:41 -0600 Subject: Re: [CAUT] Erard piano Hi Wim, Sounds like something Newton Hunt would do <G> No harm asking. Joe Goss RPT Mother Goose Tools imatunr at srvinet.com www.mothergoosetools.com ----- Original Message ----- From: <wimblees at aol.com> To: <caut at ptg.org> Sent: Monday, May 29, 2006 12:38 PM Subject: Re: [CAUT] Erard piano > Thanks Ed, for this information. Unfortunately, although this all makes > sense to a piano technician, this guy is a piano player, and all he > wants is someone to do the work. But he needed some specs to tell the > technician what is right. Apparently he can't find someone in his area > that is capable of doing this. (Maybe I can ask him if he'll fly me > over there to do the work) :) > > Wim > > -----Original Message----- > From: A440A at aol.com > To: caut at ptg.org > Sent: Mon, 29 May 2006 14:20:52 EDT > Subject: Re: [CAUT] Erard piano > > << > My problem is that I cannot find an expert who will give me the > correct > factory hammer blow distance and factory key depth, as well > as damper > regulation.<< > > You can find the proper keydip by understanding that the sharps must > not > go farther than approx. 1 mm above the tops of the naturals when > depressed, > and they cannot be above 13 mm above the naturals when at rest. This is > your > range of keydip. The hammers must not lie on the rest rail, nor be more > than 5 > mm above it. This is your hammer range. Let-off can be set at 1 mm > throughout > the scale for a beginning specification. You should then be able to > find a > comfortable set of specs that are tailored to the performers sense of > touch by > varying the amount of aftertouch. ie. if you want to reduce the > aftertouch to > a minumum, (which will be the fastest action), lower your hammers or > raise > your keydip, or a little of both. You may then want to set your let-off > to just > > below the lower excursion limit of the string when the string has been > struck > as firmly as the performer is likely to play it. The drop should leave > the > hammer at exactly the same height as let-off. Springs should be as > strong as > possible without being felt in the key upon hammer release. > The knuckle should be in contact with the top of the jack, but no more > than > that. The distal edge of the jack should be even with the distal edge > of the > knuckle core. > The dampers should begin to lift when the hammer is halfway to the > string. > > Ed Foote RPT > http://www.uk-piano.org/edfoote/index.html > www.uk-piano.org/edfoote/well_tempered_piano.html
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