[CAUT] Moving capstans

[Chris Solliday]

well actually the process is usually done the other way around. I realize I
stuck my foot in my mouth (again) and oversimplified. Ric, Ed, and David
have given you good advice. And at the risk of beating a subject that you
have already laid to rest... the real answer to your original question is
there isn't one but what i hope that you are aware of is that in this
process we know what ratio is, we know what strike weight is, we can know
the front weight, and we have an intended balance weight that we are trying
to get and so we could find for KR but it is alot simpler to float the boat
(capstan). Afterall who is using other than a 17mm knuckle? and why would
you?  And the leaway here is very small, ratio is between 5.3 and 5.7 on
good actions, bw 35-45 and if you can't get enough down with the capstan
there is always the balance rail punching or shim trick further changing KR.
Nick G's program is useful fun but ballpark. I could be more specific if I
had been able to see the chart but it has been removed and wasn't readable
at first. If you're going to do this kind of work I hope you will consider
becoming a licensed Stanwood installer. And that goes for you other guys
too, Ric excepted and accepted. Chris
----- Original Message ----- 
From: "Alan McCoy" <amccoy@mail.ewu.edu>
To: <caut@ptg.org>
Sent: Tuesday, October 19, 2004 5:58 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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