This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment Hi Terry, questions on uprights? Not worthy, not worthy. Except I have = paying customers who don't have room for a grand, love the old piano = cases and want them to work well.=20 I think you misinterpreted my comment. I do not question doing = high-level work on an upright, but rather I'm an very interested and I = think a quality upright is very much worth putting the effort into it. = So that is why I say that I have many questions about upright = touchweight - so little has been written about it. Yes, I realize many = will say they are not worth the effort, but they can be. And there is = one more reason to add to your list of reasons one may want to have one = - they can be fabulous instruments! I think it is simpler if we look at the fact that the hammer weight has = no effect.=20 Ah, but it does. Inertia. Won't affect static weights, but will become = obvious when playing I hung the heaviest Wurzen felt Ronsen hammers on the thing and the DW = was the same at the bass as the treble. The friction becomes equal note = to note and less than on a grand because the friction at the hammer butt = is basically nothing. This being the case, the leading is the same from = note to note to achieve the same balance of the key and DW can be = achieved this way. I don't like actions with a 56 gram downweight. Too = heavy.=20 I don't know this for fact, but I strongly think that you will not want = the same leading from key to key. You will want more in bass and less in = treble, much like a grand, so that the inertia will have the feel of = mass in the bass and light in treble. Also, the hammers do rest against = the rest rail - there will be a bit of difference in DW due to hammer = movement even with a static measurement. The key ratio is a 1.66 so I'm thinking the factory got the balance rail = off by 1/8 inch. You have to double the balance rail mistake soI figure = a 5mm capstan move should do it. By tilting the capstan I should pick up = 3 grams DW. The 5 mm will be along the top of the key and the top of = the capstan will move 2 to 3 mm in relation to the sticker. Total I = expect to pick up 4 to 5 grams of DW. There is room on these stickers = to come that far forward but I can always remove the rail and take out = some wood to move the bottom rail where ever I want. That's the beauty = of long stickers. What is the overall action ratio? I certainly don't want to lighten the action by adding lead. Removing = lead might make it free wheel, not enough mass. I want to see if = changing the geometry to solve the DW problem will give it the "snap" = I'm looking for. That's why I was asking how much lead is in the keys? If there is too = little, adding lead could be the ticket! Thanks for your interest Terry. No pictures yet. I'll have to get some. Would love to see them. Terry Farrell ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/dc/53/0e/0e/attachment.htm ---------------------- multipart/alternative attachment--
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