Gotcha....that has happened to me before and I didn't know why...Thanks... David Ilvedson, RPT Pacifica, California ----- Original message ---------------------------------------- From: central <jorge1ml@mail.cmich.edu> To: "ilvey@sbcglobal.net, "College and University Technicians" <caut@ptg.org> Received: 2/28/2006 8:14:34 AM Subject: Re: [CAUT] backchecks and capsizing, (was Glenn Gould/BachStuff >David, > If I understood Ed correctly, "Capsizing" refers to a condition where a >hammer gets caught by the backcheck below the hammer line during fast >staccato repetition with the jack impaled helplessly against the front side >of the knuckle. Too much distance between shanks and rest felts allows >this. > Deeper causes include just about every aspect of parts, regulation, and >geometry. Recall also those articles by CAUT forefather Ken Sloan on >repetition failure and hammer tail length etc. > I'd sure never tell a customer whose piano suffers those maladies they >have "Catastrophic Action Failure" if that's the official PTG term. >"Occasionally Capsizing hammers" seems a little less severe. >-Mike >On 2/27/06 5:56 PM, "David Ilvedson" <ilvey@sbcglobal.net> wrote: >> Well....explain the capsizing bit again...? >> >> David Ilvedson, RPT >> Pacifica, California >> >> >> >> ----- Original message ---------------------------------------- >> From: ed440@mindspring.com >> To: CAUT <caut@ptg.org> >> Received: 2/27/2006 9:09:43 AM >> Subject: Fw: RE: [CAUT] backchecks and capsizing, (was Glenn Gould/BachStuff >> >> >>> Pardon, I meant to send this to Eric privately. >>> But if anyone wants to add to it......? >>> Ed >> >>> -----Forwarded Message----- >>>> From: ed440@mindspring.com >>>> Sent: Feb 27, 2006 5:06 PM >>>> To: College and University Technicians <caut@ptg.org> >>>> Subject: RE: [CAUT] backchecks and capsizing, (was Glenn Gould/Bach Stuff >>>> >>>> Eric- >>>> Would you care to expand on this just a little bit? >>>> I'm thinking it could make a good item in the Tips, Tools and Techniques >>>> column of >>> the Journal. >>>> Ed Sutton >>>> Assistant Editor >>>> PTJournal >>>> >>>> -----Original Message----- >>>>> From: "Wolfley, Eric (wolfleel)" <WOLFLEEL@UCMAIL.UC.EDU> >>>>> Sent: Feb 27, 2006 3:57 PM >>>>> To: College and University Technicians <caut@ptg.org> >>>>> Subject: RE: [CAUT] backchecks and capsizing, (was Glenn Gould/Bach Stuff >>>>> >>>>> "catastrophic action failure". >>>>> >>>>> I have a test for this that I call the "absolute test for minimum action >>>>> function" i.e. - will the note work? >>>>> >>>>> Play a note at a normal blow and after it checks, lower it to rest >>>>> position very slowly. Then give the note a sharp blow. This will uncover >>>>> a myriad of little problems which can result in non-functionality. >>>>> >>>>> Eric Wolfley, RPT >>>>> Head Piano Technician >>>>> Cincinnati College-Conservatory of Music >>>>> University of Cincinnati >>>>> >>>>> -----Original Message----- >>>>> From: caut-bounces@ptg.org [mailto:caut-bounces@ptg.org] On Behalf Of >>>>> A440A@aol.com >>>>> Sent: Monday, February 27, 2006 3:46 PM >>>>> To: caut@ptg.org >>>>> Subject: [CAUT] backchecks and capsizing, (was Glenn Gould/Bach Stuff >>>>> >>>>> >>>>> In a message dated 2/27/06 2:43:49 PM, jorge1ml@mail.cmich.edu writes: >>>>> >>>>> << "Action Capsizing"? Did you invent that term? That's a really neat >>>>> term to describe hammers caught below the hammer line! >> >>>>> >>>>> Yea, I learned that knots will capsize if tied incorrectly or used >>>>> incorrectly, just seemed to fit the action condiition formerly referred >>>>> to as >>>>> "catastropic action failure". >>>>> Regards, >>>>> >>>>> >>>>> >>>>> Ed Foote RPT >>>>> http://www.uk-piano.org/edfoote/index.html >>>>> www.uk-piano.org/edfoote/well_tempered_piano.html >>>>> >>>>> _______________________________________________ >>>>> caut list info: https://www.moypiano.com/resources/#archives >>>>> _______________________________________________ >>>>> caut list info: https://www.moypiano.com/resources/#archives >>>> >>>> _______________________________________________ >>>> caut list info: https://www.moypiano.com/resources/#archives >> >>> _______________________________________________ >>> caut list info: https://www.moypiano.com/resources/#archives >> _______________________________________________ >> caut list info: https://www.moypiano.com/resources/#archives >_______________________________________________ >caut list info: https://www.moypiano.com/resources/#archives
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