[pianotech] Steinway agraffe to strike line dimensions

Joe DeFazio defaziomusic at verizon.net
Thu Feb 18 15:39:02 MST 2010


> From: John Delacour <JD at Pianomaker.co.uk>
> Date: February 18, 2010 3:43:02 PM EST
> 
> At 20:05 -0500 17/2/10, Joe DeFazio wrote:
> 
>> On my S&S model C, note #1 (A0) has a distance of circa 202mm from the center of the agraffe to the strike point, give or take 1.5 mm (the hammer is overcentering, and it's hard to measure exactly with the damper in place)
> 
> (John Delacour wrote:) That's more like it! In that case, the exact measurement ought to be 203mm, an eighth for a speaking length of 1624 mm (according to my records).

Hi John,

The hammers on my C have been filed too many times, and are overcentering, which probably shortens the agraffe-to-strike-point measurement a bit.  

Joe DeFazio
Pittsburgh
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