This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment Damper lever spring way too tight causing the wippen to want to rotate = and keep the jack tucked under the hammer butt?? If I'm way off base, feel free to enlighten me. I actually like to have customers watch my diagnostic work. It gives me = an excuse to use one of my better diagnostic methods: talking to myself. Mark Ultsch Madison ----- Original Message -----=20 From: Dave Bunch=20 To: pianotech@ptg.org=20 Sent: Thursday, November 03, 2005 6:54 PM Subject: Blubber Pluzzler Hello- Blubbering (double striking) hammers in a vertical are not all that = uncommon, but today I found a cause that I don't remember seeing before. It was a new Baldwin Hamilton studio sized piano. The customer was = complaining that several notes in the low tenor area were not = sustaining. When I got there I found that these few notes were double = striking and sounding like they were blocking when played lightly. = Actually anything up to a light/moderate keystroke. I checked the position of the let off rail and regulation in general. = So far things looked fine. Moving the key down slowly produced let off = at about 1/8" and there was sufficient key dip for plenty of after = touch. Back checking was fine. I went to the worst one and to satisfy my = curiosity, cranked the button down to where let off was about 1/2". This = changed nothing. The hammer was still bouncing off the top of the jack. = Only on a very firm stroke would everything cycle through as it should. = Most of the piano was just fine. It was these few notes. Well, it only took about five minutes to figure it out, but it was a = long five minutes with the customer watching. Anyone want to guess on = this one? Dave Bunch ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/a8/bc/d7/3c/attachment.htm ---------------------- multipart/alternative attachment--
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