string length possible in given cabinet size?

[Joe & Penny Goss]

Hi Stephen,
String length is only one of the things to consider,
now where did you say the strike line and dampers would go and oops how long
they are they going to be and who will tune the octaves on the outside? Not
this deaf tuner for sure<G>2
Joe Goss
imatunr@srvinet.com
www.mothergoosetools.com
----- Original Message -----
From: "Stephen Airy" <stephen_airy@yahoo.com>
To: <pianotech@ptg.org>
Sent: Thursday, March 29, 2001 2:27 PM
Subject: string length possible in given cabinet size?


> I was wondering -- How does a piano maker figure out
> how long his longest string on each bridge can be?  I
> was thinking -- if I designed a 64-inch tall and
> 76-inch wide upright (extra width cause I would like
> an extra octave at each end) (would probably be
> several years before I could actually start a project
> like this if I ever get around to doing it), is there
> a way I could figure out how long my longest string
> can be on the bass, and my longest tenor string
> length?  I was thinking I could possibly have a 81" or
> 84" longest string on the bass and maybe a 68" string
> on the lowest tenor note.  I am thinking of a scale
> like A-12 (negative numbers = below lowest note on
> 88-key piano) to B3 = wound monochords, C4 to G#12 =
> wound bichords, A13 to B15 = wound trichords, then C16
> to C100 (extra octave in treble IF possible) would be
> plain trichords.  I'm thinking of having a bass/treble
> break at A#12/A13 or B15/B16.  What do you guys think
> would be the longest strings I could get in a cabinet
> that size?  Also the keyboard would probably be
> designed for standing up at the piano, or for using a
> fairly tall stool.  I'm thinking of a keyboard height
> of 36 inches from the floor to the tops of the naturals.
>
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