Hi Jeannie, A re post that may be relevant. I agree with previous post, that both the damper felt and strings must be clean and free from contaminants. A few additions. Most of the shushing tends to come from the tri dampers, and it is important that tips of the wedges do not protrude below the strings. I have had the same problem with a studio, and redampered with the Lareaux felt, it completely cured the problem for a few years, but as the soft cross grained felt bunched up and compressed, the problem returned. Catch 22 I'm afraid! My 2 bits worth Roger >Hi Richard, > I have several samples of different readily available damper felts and some thoughts on each. > >Yamaha standard grand and CF damper material Both types are firm and resilient. It is with out doubt the most accurately cut felt in the industry, this is worthy to note as it makes tri damper alignment very easy, the securely sewn treble damper material gives four nice clean contact points. The tri damper felt fits nicely between the strings of most pianos. My number one choice for grand rebuilding. > >Steinway (New York) Felt quality similar to Yamaha. I like the tapering of the uni cord felt. >The quality of cut on their tri dampers is poor, all too often one V is significantly thicker than the other, this leads to significant regulation hassles. they are also a little thick for my liking, and don't slip between the strings as well. The sewn damper felt is a little short for my liking. The Hamburg Steinway's that I have seen, seem to damp better than the New York counter parts. Maybe Renner felt? Or superior techs? If Hamburg is using Renner damper felt, this could be a good choice for supply. Now I have to jump into a bunker put on a flame suit and get some protection. I criticized the big S. > >Renner all round good quality and accurate cutting, I have not used their sewn material for years, so no comment. > >All the above have the grain running with the string. > >Lareaux (France) Grain runs in the opposite direction. The supply that I have is backed with good quality Red backing felt. very deep and sharp V cuts. Invariably I have had to trim the tip of the V to obtain good string clearance. Felt tends to bunch up with time. it's soft as previously described. > >For verticals I mainly use Renner tri bass dampers to enhance damping on the larger old upright's. This will usually mean that the system has to be modified to match bass geometry to treble. > >All three major damper felt suppliers should be easy to locate in Europe, if you have problems let us know. > >Hope this helps. >Roger > > > > > > > > >At 05:21 PM 20/06/99 +0200, you wrote: >> >> >>Thanks Roger, Jim, Brian and others for the response. Roger, I wonder if you have >>any addresses for ordering any particularly good felt. The Yamaha I can of course >>get anytime, but you also mention French felt. >> >>The characteristics of felt used in damper felt is not useally mentioned in the >>suppliers catalouges, at least not the ones we get over here. >> >>Your paragraphs on your observations on damper felt were illuminating and very >>welcome. Damper regulation has never been my strong suit, tho I suppose I will >>have to bring that up to full speed quick enough now. However my routines are good >>enough that I will give your proceedure a try after the summer break Thanks again >>one and all. >> >>Brian, I love your exuberance... you will go far, no doubt about it >> >>Richard Brekne >>I.C.P.T.G N.P.T.F >> Roger Jolly Saskatoon, Canada. 306-665-0213 Fax 652-0505
This PTG archive page provided courtesy of Moy Piano Service, LLC