About the discussion on when two rounds are needed... Dr. Al Sanderson measured at what pitch adjustment the plain wire creeps around the hitch pin. I mean - How far can you pull up a string in the middle of the piano before the adjacent string changes too (since they are one length of wire looped around the hitch pin). I believe he found that at 5 cents or above (anybody else remember this from his classes or tech tip handouts??), the string creeped around the hitch pin. I know all pianos and wire are "slightly" different, but this gives us some additional ideas on when two rounds are needed. Of course the reaction of the bridges and soundboard to additional tension is a huge factor, but it is interesting that at only 5 cents we change the pitch of the string adjacent that we just got finished tuning!! So if you're doing a 4 cent pitchraise (one beat) and you pull the string slightly above 440 and lower it to set the pin you've changed the adjacent string. Lance Lafargue, RPT New Orleans Chapter Covington, LA. lafargue@iamerica.net
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