Joe Goss's "Goose Juice" is very useful for easing rusty strings over crusty felt. This will reduce string breakage. Jason Kanter On Thu, Nov 1, 2012 at 12:24 PM, Terry Farrell <mfarrel2 at tampabay.rr.com>wrote: > Yes, strings can break. You take precautions to minimize the chance. And > then you raise pitch. On a 100 year old piano, I'll be hesitant to go with > more than 30 cents or so overpull in the high treble. > > I do a lot of pitch raises, and among 60-cent pitch raises on 100 or so > year old pianos, I'd say that better than 90 percent are done without > strings breaking. Sometimes you'll have one or two break, and sometimes > they all just start popping - but not often. > > I had a 1900 Everett grand in original worn & rusted to the nub condition > in my shop a couple years ago. Just for fun I wrenched on a good number of > tuning pins with the AccuTuner on to measure how high I could pull strings > sharp before breaking. On this particular piano, in the tenor and treble, I > was able to pull all of them 100 cents sharp without breaking and many went > 200 cents without breaking. None made it to 300 cents. > > If they break, and you lower pitch prior to pulling it up, then the string > was weak to begin with - or the scale was horrible. > > And anyway, starting about this time of year, it's too cold in Winnipeg to > do anything anyway! Eat a big meal and hibernate until spring breaks! ;-) > > Terry Farrell > > On Nov 1, 2012, at 3:08 PM, Carl wrote: > > > I've been reading many, not all, of these (high and outside) posts for a > couple of weeks now, and only > > one fellow brought up the possibility of broken strings on pitch raises. > I 've had many pitch raise > > needs and always worry about the possibility of breakeage. I'm aware > that a piano 10 or 15 years > > old can be raised without much worry, but many are considerably older, > and look and feel like all > > the strings might break with an even 10 cent raise. That's likely an > exageration, but all you need is > > one string to break, and this adds considerable time to a tuning, plus > other factors , such as cost > > for the extra work . ???????? > > > > CT - Winnipeg. > -- *| || ||| || ||| || ||| || ||| || ||| || ||| || |||* jason's cell 425 830 1561 -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://www.moypiano.com/ptg/pianotech.php/attachments/20121101/600a7a7c/attachment.htm>
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