This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment Dale , Richard, I agree with your definition of tension , and I understand your enthusiasm with the slicing of high tension hammers. But still a good hammer may have enough density to allow for further voicing and maintenance, and I second Richard for saying that battery needling is not as efficient in the case of a little compression hammer. I guess it was not very clear, but when I say we can have a hammer with a lot of tension, I though more of the Ronsen kind than the Renner one (till the use of their new presses, the hammers where varying in density from one set to another and within the set, so the softer ones have little tension before voicing). Then, we rarely have sliced perfectly voiced pianos hammers , but just by pinching with our fingers we know that there is enough tension present or not. When I was less instructed in voicing (did not knew about the cushion role for instance) I was focusing a lot on tension, as a necessity. What we learn to do with the needles is to get that tension up to some point while providing the internal suspension for the hammer stroke. I guess that if the tension is too high it can create an instability , seem to me that felt hold better compression than stretching in time (but the 2 up to certain limit certainly) Good voicing bring ARTICULATION in tone, that is the opposite of straightness or linear . That is what allows the pianist to have musical layers, then the power within the tone may be sort of underneath in piano play modes, and get to the front at higher levels. The number of tone layers may be the highest possible for me to like a tone. Unfortunately, we are very often limited by the soundboard, the action type, the keyboard, and also the hammers too much or not enough voiced very often. When building the cushion, one take care of not over needling, meaning we have to needle strong and deep as if the middle of the hammer is not needled to compensate for the mellowing of the outer core, indeed the outer tension dissipate and the tone get really dead. Then, once the compressed felt have released the tension within it, no interest to needle further. The high spectra density is due mostly to the felt quality, and the shape of course, it is easy to use a few drops of something to add very high partials (or a whoosh tone), but then they are present in any level of tone, so I don't find this process very advantageous it is not employed by the pianist to sing. And our wonderful Wurzen Filz is absolutely guaranteed without genetically modified wool inside, in fact the only secret is that the sheep's usually are driven to eat grass near Chernobyl and that gives that very springy wool quality (if I have well understood Andre's lecture on the subject). Enough betises. back to the puter Isaac OLEG -----Message d'origine----- De : pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org]De la part de Erwinspiano@aol.com Envoye : dimanche 9 mai 2004 04:03 A : pianotech@ptg.org Objet : Re: Lacquer fight! Lacquer fight! Isaac My statement on tension. I hope its clearer >>>Ok Tension on felt means stretch or pull right? Compression means compaction or densification right? Now I want to make a statement that you can prove for yourself. The Ronsen hammers is the most tensioned hammer in the world. & No I'm not a salesman. If the felt on your preferred hammer is really stretched & tensioned, as you keep referring to,then if you should be able to cut the hammer open from the strike point to the molding with a razor& it should immediately & dramitically bloom open. Especially in the Bass & tenor hammers. This is exactly what happens with the Ronsen hammers. All of the hammers Ronsen makes will do this but the Wurzen felt most of all. I've been at this for years now. I've cut open all kinds of hammers & I don't believe the phenomena you refer to as tension is what your using to get tone it's the compaction or compression. Most hammers will blomm open to some degree but it's not usually dramtic. Isaac hammers will also do this to some degree. The point is that a stretched elastic felt around a hammer molding should equal incresed springiness & it does. Also the hammer your using is a fine hammer & gets a fine tone but I do not believe it is under much tension as I've expressed it,It's under compaction & the inherent springiness of the felt is your ally invoicing & I know that we agree on this. ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/4f/1d/03/85/attachment.htm ---------------------- multipart/alternative attachment--
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