And what did I say! grinnnnnnnnnn On donderdag, mei 8, 2003, at 23:07 Europe/Amsterdam, Isaac OLEG wrote: > Hello Richard, > > I am often amazed to see how much of a good tone is obtained while > leaving the strings mark almost intact. > And indeed unless a complete go round is made half solutions does not > seem to gove interesting results. (Particularly because too much > weight is off if complete shaping is done) > That is why I am very interested in seeing the method (and hear the > result) for these fast cap shaping supposedly due at Yamaha France. > > > I may state I am not impressed with the tone of the conservatory > pianos, they sound like , eh . school pianos (grin) > Too much shaping mean that the outer core is broken, so the work is to > be done agin almost from the start. > I'd say the hammers I've seen where terribly lacking power after they > have been shaped lightly agin an again. > > And I measure DW 40 UW 15 for instance in the middle of a Steinway B . > Goes for a very light head probably. > > Sometime the felt does not hold enough and shaping the shoulders > modify the global shape to a potatoes. > This is why I wonder if a first good deep and battery needling is not > the good method, and then, a little shaping only to have less large > grooves is due. Nowadays that is the way the S&S techs work on > instruments that are used a lot like in Radio France. They change > hammers every 8 years or so with this method. > The trick is to leave enough reserve and be very cautious to keep > enough basement. ( low shoulder firmness ) > But the top may be very tensioned and springy, then the size of the > grooves matter way less, and it is not damping high partials as can be > believed at first. > > Any more thoughts ? > > Regards and greetings. > > Isaac OLEG > > Entretien et reparation de pianos. > > PianoTech > 17 rue de Choisy > 94400 VITRY sur SEINE > FRANCE > tel : 033 01 47 18 06 98 > fax : 033 01 47 18 06 90 > cell: 06 60 42 58 77 > >> -----Message d'origine----- >> De : Richard Brekne [mailto:Richard.Brekne@grieg.uib.no] >> Envoye : jeudi 8 mai 2003 22:43 >> A : oleg-i@wanadoo.fr; Pianotech >> Objet : Re: hammer change - shaping >> >> >> Issac, Ed, and others.. >> >> Andre' went into this subject in some detail with me while we were >> visiting during the Easter holidays. I think as I >> understand his point >> that it is his contention that the voice of the hammer >> remains basically >> intact even through what is often considered rather severe >> wear. Instead >> of a complete reshaping job entailing re-mating hammers to >> strings, a >> complete revamp of the voicing due to more significant >> changes in hammer >> mass and exterior tension, along with all the fine single >> string voicing >> and whatever other tone building processes one finds usefull.....,, >> leaving the hammers unshaped allows one to simply touch up >> the existing >> voicing without all the rest of it. And, I think the >> contention is, with >> similar results in quality. >> >> Thinking about this it is not sooooo off the wall. If the origional >> shaping and mating was done well, then about the only thing that is >> really changed with wear is the surface area that contacts >> the string. >> There was an article not to long ago in the Journal about >> voicing at the >> extremes of the string marks on such hammers. >> >> I dont think we are talking about a flat top that extends 5 mm or >> anything, but certainly more wear then is usual to allow >> for. After the >> first reshaping then (by Andre's suggestion) and then >> waiting until that >> same amount of wear and tear again is apparent, roughly the >> same amount >> of time will have passed as what you describe in a University >> situation.... 3-4 years. And in both cases by then hammers >> are ready for >> replacement. >> >> Course Andre' will jump in and clarify wherever I have misunderstood >> him, but on the surface of it... it seems to make some >> sense. Or what ? >> >> RicB >> >> Isaac OLEG wrote: >>> >>> Hello Andre, >>> >>> The instruments in the conservatory are shaped every year >> a little. >>> >>> otech >> >> -- >> Richard Brekne >> RPT, N.P.T.F. >> UiB, Bergen, Norway >> mailto:rbrekne@broadpark.no >> http://home.broadpark.no/~rbrekne/ricmain.html >> http://www.hf.uib.no/grieg/personer/cv_RB.html >> > > _______________________________________________ > pianotech list info: https://www.moypiano.com/resources/#archives > > Antares, The Netherlands see my website at : www.concertpianoservice.nl
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