This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment ----- Original Message -----=20 From: David Skolnik=20 To: pianotech@ptg.org=20 Sent: Friday, March 08, 2002 11:28 PM Subject: Twist and Shout - Follow up ? Hi Zen- So what did you do? David Skolnik At 12:34 PM 02/13/2002 -0500, you wrote: Hear the notes change pitch while the tuning pins twist! =20 Hear the technician shout endless streams of obscenities! =20 (And it's all happening at a church near you!) =20 Hi Everyone -- =20 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.) =20 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? =20 Concerning the tight pins -- does anyone know of any cute tricks for = slightly easing that tightness? I'm going to work on getting = authorization to do the pin-pounding job, and I'd like to be able to = leave some semblence of consistency of pin torque when I'm done. =20 Any insights would be greatly appreciated. Thank you. Z! Reinhardt RPT Ann Arbor MI diskladame@provide.net I'd bet that driving them in would make them tighter still. The = loose one you can of course replace with larger. If the murderously = tight ones are just a few, I suppose you could take them out, ream the = hole, and put them back in. But if it's a lot of 'em, -- I'm not sure = what I'd do, short of removing them all, reaming and re-pinning. Any = type of lube might make them too loose or ruin the pinblock, but I guess = you could experiment with one pin. I'm sure everyone has run into "frozen" regulating screws that = break off. I asked how to remedy this once, and someone suggested = heating them, which I tried, first with a soldering iron, then a small = torch -- didn't have much, if any effect. I had to just replace all the = ones that broke. But has anyone tried to heat a tight tuning pin to = make it expand, hopefully enlarging the hole? Are tuning pins tempered? = (I realize I brought up more questions than answers). --David = Nereson, RPT, Denver ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/a2/23/7d/a1/attachment.htm ---------------------- multipart/alternative attachment--
This PTG archive page provided courtesy of Moy Piano Service, LLC