[CAUT] Moving capstans

[Ed Sutton]

Alan-

Nick Gravagne has a program for sale to do what you want.  He offers 2
weeks' free trial. <http://home.att.net/~nickware/action.htm>

I haven't tried it, but it looks good.

Some pianos may work better with different capstan lines for naturals and
accidentals. 

In the end you will have to do practical trials anyway. I have a capstan on
a block of wood on the end of a stiff wire.  I can fish quickly to get some
rough ideas of what will work.

Also, some light go bars over the bench make it faster to pull and replace
the stack

Please let us know how it goes if you try Nick's program.

Ed Sutton


> [Original Message]
> From: Alan McCoy <amccoy@mail.ewu.edu>
> To: College and University Technicians <caut@ptg.org <caut@ptg.org>
> Date: 10/19/2004 5:58:21 PM
> Subject: Re: [CAUT] Moving capstans
>
> Hi Chris,
>
> I know the formula for R, etc. I could also just physically move a capstan
> and recalculate. The question though is how to predict the change in BW
> resulting from moving a capstan or knuckle, before actually moving it (as
> per the analysis sheet).
>
> Alan
>
>
> > From: Chris Solliday <solliday@ptd.net>
> > Reply-To: "College and University Technicians <caut@ptg.org>"
<caut@ptg.org>
> > Date: Tue, 19 Oct 2004 16:43:31 -0400
> > To: "College and University Technicians <caut@ptg.org>" <caut@ptg.org>
> > Subject: Re: [CAUT] Moving capstans
> > 
> > SR= BW+FW-(KRxWW) divided by SW the rest is simple math.
> > ----- Original Message -----
> > From: "Alan McCoy" <amccoy@mail.ewu.edu>
> > To: "CAUTlist" <caut@ptg.org>
> > Sent: Tuesday, October 19, 2004 4:28 PM
> > Subject: [CAUT] Moving capstans
> > 
> > 
> >> Hi Folks,
> >> 
> >> I'd like to pick some of your brains about a problem action. I thought
it
> >> might help the discussion to include my spreadsheet, but the list
> >> administrator thought it better to separate the attachment. If you want
> > to,
> >> please go to http://www.ptg.org:1406/files/20041019125312.xls for the
> >> worksheet.
> >> 
> >> Is there some way to calculate how much BW will change when moving
either
> >> the knuckle or the capstan? Or does anyone have enough experience/data
for
> > a
> >> rule of thumb for this calculation?
> >> 
> >> Comments?
> >> 
> >> Thanks.
> >> 
> >> 
> >> -- Alan McCoy, RPT
> >> Piano Technician
> >> 
> >> Eastern Washington University
> >> 119 Music Bldg
> >> Cheney, WA 99004
> >> 
> >> (509) 359-4627
> >> amccoy@mail.ewu.edu
> >> 
> >> 
> >> 
> >> 
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> >> 
> >> 
> > 
> > 
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