On 3/7/2013 5:29 AM, Overs Pianos wrote: > Hi Ron, > > I see a scaling mess where the speaking lengths of the fourth and fifth > notes from the left hand strut have the wrong speaking lengths (top > image). This piano will definitely have a tuning stability problem. > There's a paddock full of this stuff out there, and I think its worse > that it was now that manufacturers are mostly using CNC for bridge > drilling. > > The bottom image has so many errors its hard to see where the curve > might be. What a mess. Tuning stability is about usual to even a bit better than average since the low tenor break% is in the 35% range. The scary part of this scale is the high bass. The highest wrapped bichord is at 74%! I have no idea what has kept that from breaking. The owner used to live across the street from me so she suffered me measuring the scale one afternoon after I'd first tuned it and noticed the scale layout. Ron N
This PTG archive page provided courtesy of Moy Piano Service, LLC