[CAUT] killer shanks

[Chris Solliday]

it's concave oval just like the top section of most sets of hex shanks. And there are those amazing toothpicks that some Yamahas have in the high treble. I see what Ron has said re I beam construction and my only point is that they sound better to me and this may just be my and a few others preference. Wally says it's more like a golf club, I don't really know what that means either, I'll leave the rest to the more educated folks, mean time I gotta go remove some material from some hexshanks.
Chris Solliday
  ----- Original Message ----- 
  From: Ed Sutton 
  To: College and University Technicians 
  Sent: Saturday, May 19, 2007 1:38 PM
  Subject: Re: [CAUT] killer shanks


  Chris-

  I must have missed some posts on this thread.

  Could you give a clear description of the cross section of the shank when you are finished rehaping?

  Is it convex  ()  

  or concave )(  

  Thanks!

  Ed Sutton
    ----- Original Message ----- 
    From: Chris Solliday 
    To: caut at ptg.org 
    Sent: Saturday, May 19, 2007 12:53 PM
    Subject: [CAUT] killer shanks


    Bob Hull
    Yes I taper/channel the whole set and sort by weight. I am told that the stiffening is akin to I-beam construction but I am not an engineer so consider that hearsay. Speaking of hearing just put a tapered shank in the middle of the bass section amongst the hex and see if you hear a difference. I do. I get a stronger 3rd partial most of the time and I like that. I think tha doing this clears up the tone of the whole piano. You should experiment for yourself. A factory channeled complete set is available from Abel through Wally Brooks who was the first person to point out the attributes of doing this for me.  As I recall they are only Hamburg specs but I have used them with success. Wally will also channel other sets for you for a small fee. I am told that other sets are available from Pianotek and others but I have not gotten any so consider that a rumor. Usually I channel my own with a router gig and/or free hand on a belt sander. It is surprising how quickly and uniformly they can be turned out which is why i often don't bother with the router set up. I sort by weight to help smooth the Strikeweight taper ala Stanwood. I hope we can get some slow mo video on the difference someday.
    Chris Solliday
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