I use a concrete anchor bolt/nut when I have trouble with these Wurly spinet action bolts. There is a concrete anchor nut that is made of lead, designed to fit into a hole in the concrete, then as the screw is tightend, it swedges the lead against the hole forcing a very tight fit. One of the sizes available is a near perfect fit for the hole in the plate of these Wurly's. The anchor looks like this: http://www.boltdepot.com/product.aspx?cc=35 <http://www.boltdepot.com/product.aspx?cc=35&cs=149&cm=89> &cs=149&cm=89 First time I ran accross this problem I was a newbie working in a music store and I was eager to "prove" myself. I went to the local hardware and explained my problem. The ole boy there helped me come up with this solution. Dean _____ From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf Of paul bruesch Sent: Monday, December 27, 2010 8:27 AM To: pianotech at ptg.org Subject: Re: [pianotech] Wurlitzer console action bracket hold-down screw David, I've done enough with "normal" bolts to know exactly what you're talking about! (That was my comment about old uprights in my first reply to Frank.) I don't know that I've ever sent a damper head flying, exactly, but I have nudged some out of whack. Fortunately, the resulting utterances have always stayed inside my head instead of escaping my lips. I've attached a couple photos, worth so many words. The first shows plenty(?) clearance at note 1. The second shows the current screws unscrewed far enough, and the action tipped back to where the brackets would clear "normal" bolts. It certainly looks to me as though it would easily clear with a modicum of care without cursing the noob (moi) who replaced the screws. Additional thoughts? Paul Bruesch Stillwater, MN On Sun, Dec 26, 2010 at 10:04 PM, David Stocker <firtreepiano at hotmail.com> wrote: Paul, It is about not clobbering the dampers on the way out or back in. There are some spinets with bolts on all but the bass/tenor break. That is the most common place for a damper head to go flying. Do a few more of the ones with "normal" bolts, and you too will curse the gods of piano design. (Present company obviously exempted, Frank!) David Stocker, RPT Tumwater, WA -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20101227/b4fad11d/attachment.htm>
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