Some Steinway uprights are fairly notorious for severe counterbearing angles that make rendering very difficult thus they are can be hard to tune and on occasion the inability of the string to move through the bearing point causes you to pull the tuning pin segment past the breaking point without any movement in pitch to clue you in to what's happening. David Love www.davidlovepianos.com From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf Of Richard Sent: Tuesday, March 02, 2010 9:45 PM To: pianotech at ptg.org Subject: Re: [pianotech] String Breakage Along those lines, Steinway "45" only 3yrs old and as of last week three 17 gauge strings have broken during pitch corrections of not more than 5-7 cents. First one broke at first tuning, next one a year later. What's the deal? Used clp and lowered string before raising pitch. Rick Ucci/ Ucci Piano On Mar 2, 2010, at 2:26 PM, Matthew Todd <toddpianoworks at att.net> wrote: Well, these rooms seem to maintain a constant RH, however, half the time, these doors are left open which allows to RH to rise. When the door closes, it lowers again. TODD PIANO WORKS Matthew Todd, Piano Technician (979) 248-9578 http://www.toddpianoworks.com --- On Tue, 3/2/10, reggaepass at aol.com <reggaepass at aol.com> wrote: From: reggaepass at aol.com <reggaepass at aol.com> Subject: Re: [pianotech] String Breakage To: pianotech at ptg.org Date: Tuesday, March 2, 2010, 6:12 PM These piano's (6 Yamaha P22's), are located in rooms that have absolutely no air flow, and the pianos are completely unstable to say the least. IME, pianos in rooms with no air flow tend to be more stable, not less, than those in rooms where the air is coming and going. FWIW. Alan Eder -----Original Message----- From: Matthew Todd <toddpianoworks at att.net> To: pianotech at ptg.org Sent: Tue, Mar 2, 2010 9:59 am Subject: Re: [pianotech] String Breakage Yes, Tom, it did have a "T" before the serial number (T148507). Yes, my day was ever so lucky, considering this occurance happened in a community college practice room. These piano's (6 Yamaha P22's), are located in rooms that have absolutely no air flow, and the pianos are completely unstable to say the least. TODD PIANO WORKS Matthew Todd, Piano Technician (979) 248-9578 http://www.toddpianoworks.com --- On Tue, 3/2/10, Tom Driscoll <tomtuner at verizon.net> wrote: From: Tom Driscoll <tomtuner at verizon.net> Subject: Re: [pianotech] String Breakage To: toddpianoworks at att.net, pianotech at ptg.org Date: Tuesday, March 2, 2010, 4:10 PM Subject: [pianotech] String Breakage > List, > > I was tuning a Yamaha P22 this morning, when a monochord string broke while I was tuning it. > > I use CyberTuner, and the note was almost in tune, just a tiny bit flat, and as I turned the pin only one notch with my hammer to bring the note slightly above pitch so I could settle it back to pitch, the string snapped. > > Is there any rhyme or reason why a string breakage such as this would occur? > > Matthew > Sent from my Verizon Wireless BlackBerry Matt, More info please. Was it a P22 (or a relative) from the Thomaston plant? Look for the T before the serial # . It was a problem that I think was eventually corrected , but the older models had a sharp departure angle from the v bar to the pin ,especially in the lower row of the bichords.Combine that with a plate that was quite rough and string breakage was common. I'm not sure about the monochords as you describe but as Paul mentioned sometimes its just your lucky day. I had a contact way back when with Yamaha tech services and replaced scads of strings on this model . A little protek might help but be sure to keep the stuff away from the windings . Tom D.> > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20100302/1b1b80d4/attachment.htm>
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