<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=utf-8"><meta name=Generator content="Microsoft Word 14 (filtered medium)"><style></style></head><body lang=EN-US link="#000000" vlink="#000000"><div class=WordSection1>Just how much does the string mass change in the treble section of a piano like the Model S compared to, say, a Model D? I just pulled up one each randomly selected Model S scale and Model D scale. The Model D has this:<o:p></o:p> C-88 length = 49 mm<o:p></o:p> C-76 length = 99 mm<o:p></o:p> C-64 length = 184 mm<o:p></o:p>The Model S has this:<o:p></o:p> C-88 length = 58 mm<o:p></o:p> C-76 length = 97 mm<o:p></o:p> C-64 length = 182 mm<o:p></o:p><o:p> </o:p>String scales certainly do change with the length of the piano further on down the scale but for the top two octaves, well, the guy notching the bridges could have been off that far. I tend to end up with hammers of the quite similar mass in the top octave or two regardless of piano length. <o:p></o:p><o:p> </o:p>ddf<o:p></o:p><o:p> </o:p>Delwin D Fandrich<o:p></o:p>Piano Design & Fabrication<o:p></o:p>620 South Tower Avenue<o:p></o:p>Centralia, Washington 98531 USA<o:p></o:p>del@fandrichpiano.com<o:p></o:p>ddfandrich@gmail.com Phone  360.736.7563<o:p></o:p><o:p> </o:p>From: caut-bounces@ptg.org [mailto:caut-bounces@ptg.org] On Behalf Of Dale Erwin Sent: Tuesday, March 01, 2011 8:27 PM To: caut@ptg.org Subject: Re: [CAUT] Fwd: Steinway sound-Hammer weights<o:p></o:p><o:p> </o:p><div>Hey David  Comments below<o:p></o:p></div><div><o:p> </o:p></div><div>Dale S. Erwin <a href="http://www.Erwinspiano.com">www.Erwinspiano.com</a> Custom restoration <o:p></o:p><div id="AOLMsgPart_2_3793532f-f554-4bb8-b6bf-96ba5aa17ecc"><div><div>FWIW those original hammers at 8.5 and 3 grams respectively produce strike weights around 10.3 grams for note 1 and 4.6 grams for note 88. This will vary depending on the type of shank used. ie An Abel tapered shank yields about .3 tenths of a gram lighter than a non tapered one & I suspect the WNG type even lighter yet. Something else to factor in when choosing a strike weight. The numbers I posted earlier for the S fall into the next to lowest place on the hammer weight part of the chart so I would call that  l really light and appropriate for a small piano but an S is a really small piano.  As  the size grows so does the string mass, soundboard mass etc. And this is pretty much what I find in countless pianos. <o:p></o:p></div></div></div></div></div></body></html>