That must be a really long pipe cleaner. LOL It seems to me, you would still have the untangling to do, in order to put them on the pipe cleaner. A piece of string might work better. John Ross, Windsor, Nova Scotia. On 11-Mar-10, at 6:23 PM, wimblees at aol.com wrote: > > they don't tangle into one giant permanent spring in the bag. > to keep them from being tangled, I think there was a tech tip to put > them all on a pipe cleaner. > Wim > > > > -----Original Message----- > From: Ron Nossaman <rnossaman at cox.net> > To: pianotech at ptg.org > Sent: Thu, Mar 11, 2010 12:18 pm > Subject: Re: [pianotech] Jack Springs > > John Ross wrote: > It is from Schaff, item number 527A, upright jack spring. > > The physical properties are equal taper from top and bottom, to a > > compacting of a couple of coils, in the centre, like each end. > > The old springs were a double at each end, and the winding went > wider in > the middle. > > John, > I haven't used any of these yet, but there was a Journal article > (don't know when) on how the design was arrived at. There's less > torsion stress on the wire because there are more coils within the > compression range, pretty much eliminating breakage and producing a > more constant spring rate, and they don't tangle into one giant > permanent spring in the bag. I don't see a reason they'd be noisy, > but I don't really know. I'd try them. > Ron N -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20100311/5a950f7c/attachment.htm>
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