Grand touch

[Jon Page]

Reducing strikeweight has a direct relation to touchweight to the degree
of action leverage (Strike Ratio). On a 5:1 ratio, reducing SW by 1 gr
reduces Touchweight by 5gr. Weight has no bearing on aftertouch.
Aftertouch is a product of geometry and regulation.

My method for improved responsiveness and dynamic control is:
1. regulation/friction reduction
2. hammer mass reduction
3. leverage (capstan relocation)

If #1 is insufficient, consider #2 and #3.

David has a great method for releading the keys to compliment assist springs.
It is logical and I am astounded that it is not used by the industry.

I encourage you to pursue David's action methods for all your grand work.

Regards,

Jon Page

At 01:11 AM 11/04/1999 -0500, you wrote:
>Hi, Paul:
>
>I'm not David Stanwood, but he probably already went to bed.  But what I 
>understood from his remark is not so much that reducing the strikeweight 
>really reduces touchweight.  Rather, it reduces the perception of
touchweight 
>for the pianist, by increasing aftertouch.  Since too much aftertouch causes 
>other performance problems (by increasing the distance from the jack to the 
>knuckle at full key depth) this approach is not so desirable unless the 
>aftertouch is insufficient to begin with.  Is this what you were after?
>
>I would be weighing strike weights except that I succeeded in crashing my 
>Ohaus gram scale to the shop floor -- not smart....While it is being 
>serviced, it's a good excuse to get the mini version I have been coveting
for 
>some time.  I cannot imagine having been without a scale all these years.
>
>Bill Shull, Associate Member PTG (former/future RPT)
>University of Redlands, La Sierra University
>
>In a message dated 11/3/99 9:32:29 PM Pacific Standard Time, 
>larudee@pacbell.net writes:
>
><< David C. Stanwood wrote:
> > 
> > Dear Kristinn,
> > 
> > Reducing the striking distance would be at the bottom of my list of
> > choices.  Actions may be made light enough by other means.
> 
> Why would changing the striking distance change the weight anyway?
> 
> Paul S. Larudee, RPT
> Richmond, CA
>  >>
>  
Jon Page,  Harwich Port,  Cape Cod,  Mass.  mailto:jpage@capecod.net
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