Gene Nelson wrote: > Hello list, > Doing an evaluation of a 8 year old SSM I found that there is very high > front bearing in the high treble measured at f7 = nine divisions on the > Lowell Bubble Gauge or .027", two divisions at f6, negative 5 divisions > at f5, then two positive at f4 and mostly the same through the long and > bass bridges. Degrees is easier on everyone. The Lowell gage is calibrated in 10' increments, or 1/6° per graduation. A 1.5° in the high treble isn't really out of line. > This is total bearing - leveled the guage on speaking length and measure > tail. Good enough. For this purpose, net bearing is all you need. > I could measure crown under the board in the middle but it is flat in > the bass and almost flat in the treble with possibly 1/64" crown. > The tone and sustain at c5 through e6 are reasonably good with power and > color. > I am curious if the negative bearing at f5 would be a disqualifier so > that I should not recomend the piano to my client? > Thanks for any insights. > Gene You have a vanishingly small crown where the bearing is -0.8°. The board is dead. You'll likely hear that clearly when the humidity drops next heating season and the customer complains. Good rebuild candidate, but I wouldn't recommend it for a dependable instrument as is. Ron N
This PTG archive page provided courtesy of Moy Piano Service, LLC