[pianotech] GH-1s, etc.

[Dale Erwin]

By the way for what its worth, String makers will tell you certain thing based on there on bias and method of calculating in tensions. IE. For a while I had a well known string maker make tri-chords for 3 wrapped unison for the Stwy B break. (on the original bridge) It was an improvement but I wanted bi-chords but was told that it couldn't be done. 
  Well turns out I didn't like the tri-chords so much. SO I asked another maker if they could make the bi-chord and they said sure no problem. SO as it turns out, for my ear, its a good remedy when not adding a transition bridge,  and less invasive to the original design than lopping off the bridge. Some folks like the original thing.
  I only add 3unisons of bichord and its a much better sounding break than original....and more musical than the tri-chords. The tri-chords developed false beats after a while and some broke. ughh how I hate that.


Dale Erwin R.P.T.
Erwin's Piano Restoration Inc.
 Mason & Hamlin/Steinway/U.S. pianos
www.Erwinspiano.com
Phone: 209-577-8397

 
  





-----Original Message-----
From: Dale Erwin <erwinspiano at aol.com>
To: pianotech <pianotech at ptg.org>
Sent: Fri, Dec 14, 2012 7:05 am
Subject: Re: [pianotech] GH-1s, etc.


 So, as you are fond of saying, that's my story and sticking to it. So stuff that trout in your sack and smoke it--a little Oregon humor there.
David Love


Now you've got to admit thats funny Joe.;)
Dale


Dale Erwin R.P.T.
www.Erwinspiano.com
Phone: 209-577-8397

 
  





-----Original Message-----
From: David Love <davidlovepianos at comcast.net>
To: pianotech <pianotech at ptg.org>
Sent: Thu, Dec 13, 2012 9:11 pm
Subject: Re: [pianotech] GH-1s, etc.



There are other issues as well related to unison tension and break point percentage. At any rate, not much point in debating this as I now defer to those with more experience in this area than I do. I have done some scaling but usually run the scale by the string winder who invariably tells me why I shouldn't do something.  My main point was that there seems to be an appropriate use for wrapped trichords in certain situations. Having at least one side by side experience I would attest to that. So, as you are fond of saying, that's my story and sticking to it. So stuff that trout in your sack and smoke it--a little Oregon humor there.


David Love
www.davidlovepianos.com
415.407.8320




David Love <davidlovepianos at comcast.net> wrote:


The core would be but not necessarily the wrap.


David Love
www.davidlovepianos.com
415.407.8320




Joseph Garrett <joegarrett at earthlink.net> wrote:

David said:
"I was referring to how thin the copper needs to be. Depending on various
factors and targets, sometimes bichords end up pushing the copper down to
something much thinner than string winders are comfortable working with." 
 
David,
I understand that. However, if you were scaling for 3 string wound, the
wire core and wrap would be even smaller than with the bichords of the same
mass per note. Trichords solve little, imo..
Joe


Joe Garrett, R.P.T.
Captain of the Tool Police
Squares R I


 
 
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