< 90 degrees at impact

[Andrew and Rebeca Anderson]

Ed,
Have you checked how this works out installed in the action?  It 
seems to me you would want brand-new hammers to understrike by just a 
little with and eye towards wear-in.

If it under-strikes by 1/16" after the hammers are filed to the final 
voiced size they won't under-strike with the first hammer reshaping. 
One plus for the negative. ;-)

Andrew

At 02:40 PM 11/17/2006, you wrote:
>List,
>
>I am installing new butts, shanks, and hammers into an old Knabe 
>upright. The replacement butts I bought are Tokiwa. I didn't think 
>much about the fact that these butts are made in Japan, and Knabe is 
>an American upright. The "actual size" photo of this particular 
>Tokiwa butt in the catalog matched best with the old Knabe butts 
>that I am replacing.
>
>However, the one dimension you cannot see in the photos of the 
>catalogs is the exact location that the shank hole is bored into the 
>butts- they only show a profile. Herein lies the nature of my question:
>
>I lined a new Tokiwa butt and shank up in the action, side by side, 
>next to the old butt/shank/hammer. It turns out that the placement 
>of the shank-hole in the  new Tokiwa butt is a little over 1/16th of 
>an inch closer to the strings than the old butt. This puts the 
>hammer and shank at a different pitch resting on the hammer rail, 
>and more importantly at impact with the strings.
>
>With these new butts, the hammer will make impact with the strings 
>just BEFORE is reaches a 90 degree angle (assuming the original 
>geometry of the butt/shank/hammer to string dimensions did so). Will 
>this be a problem?????
>
>Your input is greatly appreciated.
>Ed
>
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