And perhaps Ron Nossaman could share how he sent the graph for same in his e-mail. I was able to open the attachment and look at it fullscreen in Picassa 3 (freeware), which was nice. Will Truitt -----Original Message----- From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf Of Jude Reveley (Absolute Piano) Sent: Thursday, May 28, 2009 2:17 PM To: pianotech at ptg.org Subject: Re: [pianotech] Modified L Scale with 5 note transition Here are the two versions I'm aware of: Z=(d²NLf)/.02078 published by Jim Hayes Z=d(NT(1+B))^0.5 published by Dave Roberts Nice work David. I like your approach to the transitions, although like so much else I would love to hear it to know for sure. This shape is very classic (Hallet & Davis did this but added wound trichords instead of bichords. I've got a few in the oven so I should have a better idea soon. My first transitional bridge was on my first RC&S project that Ron Nossamon designed for me about a year and a half ago. It's definitely an exponentially better piano than anything I've ever done in that class and turned me on to this wonderful world. Thanks Ron. Are you throwing in Z-bars and radial rib arrays on all the pianos you add transitions too? I've asked this a few times before, but what version of calculating inharmonicity are you all using? Finally, how do you attach a graph onto an email? Jude Reveley, RPT Absolute Piano Restoration, LLC Lowell, Massachusetts (978) 323-4545 ----- Original Message ----- From: "David Love" <davidlovepianos at comcast.net> To: <pianotech at ptg.org> Sent: Thursday, May 28, 2009 12:28 PM Subject: Re: [pianotech] Modified L Scale with 5 note transition >I think I took my Z formula from Roberts. It's all calculated from the > string data, not from the board. There are a couple of formulas for this > particular factor and nobody seems 100% satisfied with how the data output > relates to the actual sound produced. Others may be able to contribute > more > to the formulaic issues. I input the data so long ago now that I've > conveniently forgotten the headache I got trying to translate the formula > into spread sheet language. > > David Love > www.davidlovepianos.com
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