> Date: Sat, 22 Feb 1997 10:10:32 -0700 > From: Brent.Fischer@asu.edu > Subject: Re: Grand damper springs. > To: pianotech@byu.edu > Reply-to: pianotech@byu.edu I have a spring making tool and wire I got from Hale long ago. Who bought out Hale? ilvey, RPT Pacifica, CA > > Dear Albert and List: > > I have installed underlever springs on new Steinway concert grands > and usually find the tension of the springs fairly even. When you feel > a difference from one to the next just use finger pressure to lighten > the spring. It is difficult to work your way behind the underlevers > once the tray is installed to make any adustments but it can be done > if necessary. > The old Steinway backaction had very heavy springs installed all > the way to note #54. It isn't recommended to duplicate the same > diameter springs as the original because it can be easily felt in > the touch. On larger pianos I have installed springs up to around > note #30. On a "D" this really helps the dampening of the tri-chord > bass and lower tenor notes. If you are an astute reader of the Steinway > parts price list on page seventeen they offered underlever springs (old > style) #008643. These springs were more like repetition spring thickness. > I haven't taken micrometer readings but this thickness of spring can't > be felt during engagement and is much thinner than the old style type. > It is just enough to aid damper shut-off. > > The problem for me is they are no longer available although I bought > all they had left it I have just enough for two or three sets. My > question is who makes a univeral spring making jig or fixture to > create these from scratch and who supplies the repetition spring > wire to the industry. Thanks for any replies to this dilemma. > > > Brent.Fischer@ASU.EDU > Arizona State University/Tempe > > > > >
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