[CAUT] Shank to Hammer weight spreadsheet

[Tim Coates]

Chris,

I don't know of anyone who has done that.  That would be  
interesting.  Thank you for looking into it.

Tim Coates

On Feb 18, 2008, at 8:01 PM, Chris Solliday wrote:

> Has anyone tried to find a correlation between shank radius weight  
> and shank pitch? If not I will try some.
> Chris Solliday
> ----- Original Message -----
> From: Tim Coates
> To: College and University Technicians
> Sent: Sunday, February 17, 2008 10:55 PM
> Subject: Re: [CAUT] Shank to Hammer weight spreadsheet
>
> Keith,
>
> Listening and sequencing the shanks is very fast if done  
> correctly.  I don't agree with Grotian's sequencing method.  I've  
> been sorting low pitches to the bass end and high pitches to the  
> top for over twenty years.  One basic principle I follow is a low  
> pitched knock associated with a movement within the piano reduces  
> power.  It is one of the main reasons I change front rail felt  
> punchings.  Hard felt punchings create a low knock that robs power  
> from the sound.   I find the same to be true with the pitch of the  
> shanks.
>
> But as I have said before:  to each his own.  Grotian does it their  
> way and that's fine.  I know what works for me.
>
> Tim Coates
>
>
> On Feb 16, 2008, at 8:07 PM, Keith Roberts wrote:
>
>> My question is, if you are weighing the whole shank and flange,  
>> how do you know the distribution of the difference in weight? If  
>> 90% of the weight difference is from the knuckle through the  
>> flange, the SW wouldn't change much and so the presumed evening  
>> out of the weights is not there. The distribution of the mass  
>> could vary from shank to shank at all the different weights.
>>
>> I like the idea of listening to the sound of the shanks. A thinner  
>> light shank should produce a higher sound. Very quick too.
>>
>> Keith Roberts
>>
>> On Feb 16, 2008 5:48 PM, Jon Page <jonpage at comcast.net> wrote:
>>>   It takes too long.  Just dry fit the hammers to the shanks
>>> right after you've tapered them with the table saw ...
>>
>> I don't think you get the idea. Mating a shank's SW with a
>> hammer weight will require less hammer mass alteration
>> to achieve a smooth SW curve.
>> -- 
>>
>> Regards,
>>
>> Jon Page
>>
>
>

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