Getting the high treble right

[Marcel Carey]

Stéphane,
 
Maybe no one has mentioned this before, but I would try to thin the shanks (trim the sides) th see if you would get what you're looking for.
 
Marcel Carey
Sherbrooke, QC



> From: AlliedPianoCraft at hotmail.com> To: pianotech at ptg.org> Subject: Re: Getting the high treble right> Date: Sat, 14 Jun 2008 08:28:33 -0400> > Stéphane, before you go through the trouble of re-hanging the hammers while > taking off too much felt off the top, I would try some thin CA right above > the top of the molding. You will be amazed at what it will do the perk up > the last 6 notes.> > Al Guecia> > > > --------------------------------------------------> From: "Stéphane Collin" <collin.s at skynet.be>> Sent: Friday, June 13, 2008 5:41 PM> To: "'Pianotech List'" <pianotech at ptg.org>> Subject: RE: Getting the high trebble right> > > Hi John.> >> > At the moment, there is 5 mm felt between the molding and the crown at> > hammer 88. On the older hammers, though, there was nearly nothing left.> > Yet they sounded very well, musical and all. That might very well be a> > start point for experiment. But if I reduce the felt layer by 3 mm , I > > will> > have to re hang my hammers, not ? If so, well that is life, as someone> > recently told me. I spent some time in checking the right angle condition> > between hammer and strings at contact time, as you convinced me that this> > condition is absolutely crucial, certainly in the treble. (I'm convinced,> > certainly).> > What is your favourite dope ? I indeed am always deceived by the> > acetone-key top mixture, as it brings some high partials at the cost of> > colour shades dynamics (who disappear), and no more question of fine > > voicing> > after. But I always put the mixture from top. I will certainly try at > > the> > moulding next time.> > I like your idea of letting the different hammers bounce on a hard > > surface.> > Makes so much sense, as always.> >> > Thanks for your valuable input.> >> > Stéphane Collin.> >> > -----Original Message-----> > From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On > > Behalf> > Of John Delacour> > Sent: vendredi 13 juin 2008 23:06> > To: Pianotech List> > Subject: Re: Getting the high trebble right> >> > At 20:58 +0200 13/6/08, Stéphane Collin wrote:> >> >>Old hammers were lighter than the new ones, but new ones (Renner Wurzen > >>AA)> >> > What thickness of felt have you between the strike point and the> > moulding wood? Quite often Abel gives you too much, which means you> > get far too long a contact with the string. You can either inject a> > hard-setting dope at the point of the moulding or reshape the top of> > the hammer. Applying dope from the top downwards will not achieve> > the effect you want. Let the old hammer and the new bounce on a hard> > heavy surface and see how differently they behave.> >> > JD> >> >> >> >> >> >> > 
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