This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment ----- Original Message -----=20 From: Z! Reinhardt=20 To: Pianotech=20 Sent: February 13, 2002 9:34 AM Subject: Twist and Shout Yesterday was one of those days. I was called in by a church to try = to tune a piano that was notorious for not staying in tune. What I = found was all of the tuning pins standing so high in the pinblock that = the bottoms of the coils were 10mm from the surface of the plate. You = read right -- 10mm, or 3/10 of an inch. (Yes, I shot pictures of this, = but I still have to get the film developed. No, I didn't swear out = loud, but it wouldn't surprise me if others before me had.) Pin torque was all over the map. Some pins turned smoothly and didn't = pose serious problems in being set. Others were murderously tight. = Only one was bordering on loose. What I'm wondering is, will pounding = these pins to a proper height help bring about some sort of uniformity = of torque or will it make the tight ones tighter still? This was fairly common in the new Brand S pianos I was in charge of = prepping during the 70s and early 80s. If the problem is severe enough = it may require restringing with a new pinblock to really solve the = problem. However, much good can be accomplished well short of that.=20 We made it a regular practice to clean up and tighten up the coils and = level out the tuning pin height. We even made a simple little punch to = reach in underneath the pinblock, find the bottom of the tuning pins = that had been driven in so far that the string was resting on the plate = surface and tap them up a bit. Once you're started it won't take all = that long and it will make a substantial difference in tuning stability. = The uneven torque will be bothersome but you can probably learn to live = with it. Getting the pins level and the coils consistent will make a big = difference.=20 You might check the diameter of those really tight ones. We sometimes = found 3/0 and 4/0 pins stuck in there. If you find this, the best = solution to this is to pull them, plug the hole and redrill for 2/0 = pins. Del ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/1c/eb/63/3a/attachment.htm ---------------------- multipart/alternative attachment--
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