I should be able to get you some pictures, soon. This thing was probably a "top of the line" model, as it has 6 back posts, acanthus leaves cast into the pedals, etc.. And it's HUGE ! Here's the "goofy", though: while I concur ( in theory, as I've never installed a board ) that rib crowned construction makes the most sense, I must also testify that this, my Packard and my 2 1890's Knabes, ALL have the fat, wide, low ribs allegedly indicative of compression crowning, yet they are the most RESONANT uprights I've ever heard, with the "livest" boards ( on the very scientific "Thump-Fist" test ) Even after 1oo years in Georgia, where the humidity is 80-95% all summer, and down to 25% in winter. And very few cracks. So, is there is something going on here that I don't understand ? According to the general consensus of this list, shouldn't these boards be total "trash" by now ? But back to my initial question: What sort of bearing, at what points on the bridge, should I consider "acceptable" on these things, strung and at pitch ? And how should I determine it ? I have a Lowell guage with a busted glass and one of those brass rocking thingees, that's all. But with these wide, low ribs, I feel very seriously challenged to try "piggybacking" a thin laminate on top of them, glued on in in a flexed state, to try to increase the crown without replacing the boards. Perhaps even from the front sides, glued and doweled through to the existing ribs. I just would like to know "how much" increase in crown I should shoot for ? I know this sounds "nuts-o" to a lot of you, but I may be willing to take a gamble on it and report back, and would appreciate any suggestions that more experienced members may have who are fortunate enough to have customers willing to pay for new boards, just to goad me on. In the spirit of "Mikey will eat anything!" Thanks! G --- Erwinspiano@aol.com wrote: > > Gordon > Betcha there won't be a stich a crown. If this > is flat ribbed style > Ivers then there is no beam depth to the ribs to > support crown & whatever > compression was in the panel to create crown > originally is .....long gone. > Luv em though. My first spec piano was a > beautiful Ivers & Pond up 30 > summpin yrs ago. > Got a picture > Dale Erwin > > I'm getting ready to dissassemble a magnificent, > massive > Ivers and Pond "artcase" upright with mandolin > rail, > soft pedal compensating WN&G action, etc.. Besides > checking "that there is some", what guidleines for > checking the bearing on this thing, strung and up to > pitch, are there, before I break it down and lose > all > this available data ? In other words: how much > should > I look for, and what is the best method of > measuring > it? > > Thanks! > G > > > > __________________________________________ Yahoo! DSL – Something to write home about. Just $16.99/mo. or less. dsl.yahoo.com
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