turbo-guru speaks

[Mark Cramer]

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Thanks again Jon, you have my interest, can we wrestle with the subject a
bit more though?

As a critical point, it would seem measuring front weight, strike weight,
installing adjustment screws and (perhaps) moving capstans would be more
(rather than less) complicated than Chris' method.  Afterall, we are merely
removing surplus lead "wholesale" (intuitively nonetheless), "ballparking"
the springs (within 5 or 6g), then trimming with a single lead (slide-scale
fashion).

I've de-leaded before using a "cancel-weight" method.  It is quite accurate,
but certainly more time consuming than the above.

I appreciate your recommendation Jon, and wonder how much time is involved
in your (Stanwood's) approach?

This repair order as you may recall, was a 1963 B, weighing-off well, but
playing poorly, and carrying a whole lot of lead. As the turbo wippen
allowed a return to typical leading, provided ideal DW, UW & F with moderate
spring tension, and a touch consistant with our favourite pianos, I'm
inclined to stick with my original assessment.

My question is whether the (seemingly) large amount of additional work
required by NTM will provide a worthy benefit, beyond what the turbo-
wippens have already provided? I will rough-in the regulation and get this
instrument in-use for awhile. Is it worthwhile to access front weight,
strike weight and action ratio in future?

Understood, I'm asking the subjective Jon, but appreciate your opinion.
Others as well.

BTW, yes the "D" is back in action, or should I say "the action is back in
D?  :>)

Mark Cramer, RPT
Brandon University




    -----Original Message-----
    From: owner-caut@ptg.org [mailto:owner-caut@ptg.org]On Behalf Of Jon
Page
    Sent: Monday, September 18, 2000 9:40 PM
    To: caut@ptg.org
    Subject: RE: turbo-guru speaks


    Graduate the hammer Strike Weight and the key Front Weight to spec
curves
    supplied by David. Key Ratio alteration may also be needed (moving
capstans).

    Pre-tension the assist springs to just support the wippen while
installing.

    Then by adjusting the assist spring tensioning screw, to produce the
desired
    Balance Weight, it takes about 45 minutes for the keyboard.


    I also remove the dog-leg from the butterfly spring with a pair of wire
bending
    pliers made from lineman pliers. In one operation it introduces a nice
curve to
    the wire which rides the Teflon nut and places the contact point more
towards
    the front of the wip giving a longer spring arm.

    Jon Page

    At 07:05 PM 09/18/2000 -0500, you wrote:

        Care to share with the class Jon?

        Mark
        David Stanwood has a much better approach to releading with assist
springs
        with the benefit of being inertially more balanced.
        I've been applying his technique for eight years and the method
explained
        below seems much more complicated.
        Jon Page


    Jon Page,   piano technician
    Harwich Port, Cape Cod, Mass.
    mailto:jonpage@mediaone.net
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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