[CAUT] Shank to Hammer weight spreadsheet

[David Love]

I should have said the strike weight of the shank/flange and hammer
assembled (or the shank/flange only...

 

David Love
davidlovepianos at comcast.net
www.davidlovepianos.com 

-----Original Message-----
From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org] On Behalf Of David
Love
Sent: Saturday, February 16, 2008 8:08 PM
To: keithspiano at gmail.com; 'College and University Technicians'
Subject: Re: [CAUT] Shank to Hammer weight spreadsheet

 

I don't think anyone is weighing the whole shank and flange.  The strike
weight of the shank/flange assembled (or the shank only if you do it that
way) is weighed using the Stanwood platform. The flange itself has no
bearing on the strike weight.  

 

David Love
davidlovepianos at comcast.net
www.davidlovepianos.com 

-----Original Message-----
From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org] On Behalf Of Keith
Roberts
Sent: Saturday, February 16, 2008 6:07 PM
To: College and University Technicians
Subject: Re: [CAUT] Shank to Hammer weight spreadsheet

 

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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