This is a multi-part message in MIME format. ---------------------- multipart/related attachment ------=_NextPart_001_0047_01C4EEA9.304AD1F0 Or if the original cut-off bar didn't cut enough off! - But I used new = wood, so you still win! ;-) Terry Farrell ----- Original Message -----=20 From: Erwinspiano@aol.com=20 To: pianotech@ptg.org=20 Sent: Thursday, December 30, 2004 1:03 PM Subject: Recycled technology-cutoff bar List I find this kind of thing fun when I can take a beautiful piece = of previously engineered something and adapt it to something else saving = big time & cash & utilizing something that originally was very expensive = to make & end up with a nice result A client brought in a 1900 ish Baldwin upright that ended up needing = more than it first appeared, including a board. It wasn't worth doing so = the decision was made to scrap it. The tech who brought in the job = wanted the beams & such for the maple & I'll be able to salvage the = spruce in the lam. beams also.=20 The real jewel though was that this piano had a laminated = soundboard liner just like Mason or Stwy grands & uprights ( not as = thick as a grand ). I managed to get it off in nearly one piece with = crow bars, chisels & an Oklahama speed wrench. Now coincidently I'm replacing the board in a 6 ft. 1 inch Mason = AA no. 28,246 which has ribs so long a cutoff bar was really a = necessity. =20 The old Upright board liner had plenty of stock for this & by = fashioning it to fit the corner of the AA I was able to install a = straight 28 inch cut off bar that reduced the overall length of 6 ribs = as much as 13.5 inches. My longest rib was 50" & one of the longest = I've ever witnessed in any piano. This rib is now about 37.5 inches = long. I don't believe its possible to use ribs this long and expect = crown support for very long. Although my observations of the AA's is = limited the 13 rib scale has shown the crown has not survived even with = tension resonator claims. Hence the few AA boards I've seen are usually = quite flat. The sound of this piano though fair was quite lack luster in = its tonal appeal if you know what I mean even though the board was not = seriously cracked up The Mason AA has a very wide body & hence very long ribs for a 6 ft = 1" piano The original rib scale was as follows on the left For clarity the measurements below are the actual rib speaking = length not including the piece in the notches. =20 1. 30 in inches 2. 37 3. 45 --------38 modified length 4. 50 --------37.5 5. 46 -------35.5 6. 40 --------32.5 =20 7. 34 --------29.5 8. 28 --------27 9. 28 10. 20 11.18 12. 15 13. 13 It's easy to see there is far more hopes for the longevity of rib & = crown stiffness than the previous scale. this mod also get the bridge = more nearly centered over the long ribs which is IMO a good thing.This = original bridge also has the transition bridge with all the usual funky = tri-chords. It's receiving a modified trans. bridge with bi-chord = replacements. I'll let you know how it turns out in a month or so. The action is = done & case stripped. The parts are in the finish process waiting for = the belly man to get it done so my finish guy(Roy) can have the case & = plate. Good new year to all Dale Erwin =20 =20 Erwins Pianos Restorations=20 4721 Parker Rd. Modesto, Ca 95357 209-577-8397 Rebuilt Steinway , Mason &Hamlin Sales www.Erwinspiano.com ------=_NextPart_001_0047_01C4EEA9.304AD1F0 An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/17/2e/b7/af/attachment.htm ------=_NextPart_001_0047_01C4EEA9.304AD1F0-- ---------------------- multipart/related attachment A non-text attachment was scrubbed... Name: not available Type: image/jpeg Size: 73029 bytes Desc: not available Url : https://www.moypiano.com/ptg/pianotech.php/attachments/51/23/0e/3d/attachment.jpe ---------------------- multipart/related attachment--
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