popsicle stick engineering

[Kent Swafford]

Exactly. I'm planning top medium.

Kent



On Oct 29, 2006, at 4:18 PM, David C. Stanwood wrote:

> Wow.... 1/2 low strike weight level would work with a 6.5 ratio!   
> For a modern hammer weight 1/2 medium to 3/4 medium even as heavy  
> as top medium is a good match for a 5.6 ratio depending on how  
> dynamically light a feel your looking for.
>
> David
>
>
>> 5.6? This is on a Steinway B that currently has a SWR of 6.5 with
>> 17mm Steinway shanks.
>>
>> Kent
>>
>>
>> On Oct 29, 2006, at 9:29 AM, David C. Stanwood wrote:
>>
>> > Hi Kent,
>> >
>> > Strike Weight ratios will always vary note to note.  Better to hit
>> > an average Strike Weight Ratio level using a straight capstan
>> > line.  This means finding sample capstan positions across the key
>> > board that hit the target SWR.  When you hold a straight edge to
>> > the sample marks they will not all be exactly on the line.  Strike
>> > you new capstan line such that it comes closest to all the marks.
>> > Let the key ratio be what ever it is to be to make your target
>> > SWR.  What is your target SWR?
>> >
>> > David S
>> >
>> >> Of course. It was strike weight ratio to which I intended to  
>> refer in
>> >> my original post. I assumed one wants both ratios to be as uniform
>> >> across the keyboard as one can manage, especially on a piano  
>> that is
>> >> likely to have new parts again in the future. Right?
>> >>
>> >>> Kent
>> >>>
>> >>> Have you considered the fact that if you move the capstan to make
>> >>> the key ratio change your changing the wippen ratio as well?  A
>> >>> more complete picture of the effects from moving a capstan line
>> >>> are found by seeing what kind of strike weight ratio a given
>> >>> capstan position will yield.
>> >>>
>> >>> Helpfully hopefully,
>> >>>
>> >>> David Stanwood
>> >>>
>> >>>>
>> >>>> OK, so you establish a new capstan line. Excellent. As long  
>> as I'm
>> >>>> checking and controlling the key ratio, I'll guard against
>> >>>> perpetuating mistakes in the original drilling. Thanks, I
>> >>>> appreciate it.
>> >>>>
>> >>>>
>> >>>> Kent
>
>
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