Dale: I notice on the ribs that the scalloping of the ribs seems traditional in its approach which is a fairly severe downward cut at the beginning of the scallop so that the ends of the ribs thin fairly quickly. To what degree are you compression versus rib crowing and does that style of scalloping not weaken the rib at a point at which it needs to bear a significant portion of the load? David Love davidlovepianos@comcast.net -----Original Message----- From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On Behalf Of Erwinspiano@aol.com Sent: Thursday, January 06, 2005 6:09 PM To: files@ptg.org Subject: Cut off bar & fish pictures on Mason AA (Modified by Kent Swafford) Too All The pictures show a added cut off bar I posted about last week which was recycled from the baldwin upright. I decided to add the fish in the treble after Terry posted his pictures & alos because of input from many other rebuilders on list that have discussed more modern approaches to developing sustain & power in conjunction with sound board crown longevity. As posted previously the ribs on this piano are extremely long & would have provided inadequate crown support. Also the ribs & soundboard area in the top treble were extremely generous to the point of sacrificing stiffness required for adequate impedance. I'm changing all the tri-chords top bichords & probaly a bass bridge change too. The jury's still out tonally. I'll report back when its strung. The action is already to go so in march I'll tell "The rest of the story" We pressed the board today, the block is made as seen in picture. Dale Erwin [Photos at:] http://tinyurl.com/3jmod http://tinyurl.com/4y95u http://tinyurl.com/48ztm http://tinyurl.com/5fmsb http://tinyurl.com/6yron [Direct ptg.org URLs:] https://www.moypiano.com/ptg/files/attachments/f5/86/c0/a5/DSCN4569.JPG https://www.moypiano.com/ptg/files/attachments/5e/16/2e/fb/DSCN4570.JPG https://www.moypiano.com/ptg/files/attachments/6f/92/1c/64/DSCN4571.JPG https://www.moypiano.com/ptg/files/attachments/c2/6c/44/4a/DSCN4572.JPG https://www.moypiano.com/ptg/files/attachments/45/2c/31/4a/DSCN4573.JPG Erwins Pianos Restorations 4721 Parker Rd. Modesto, Ca 95357 209-577-8397 Rebuilt Steinway , Mason &Hamlin Sales www.Erwinspiano.com _______________________________________________ Files list info: http://ptg.org/mailman/listinfo/files _______________________________________________ pianotech list info: https://www.moypiano.com/resources/#archives
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