[CAUT] CAF

[Andrew Anderson]

I'd be interested in obtaining those fore-finishing notes.  Are they 
published/generally available?

Andrew Anderson

At 01:54 PM 6/17/2007, you wrote:
>While I do agree with most of the remedies recently presented for 
>CAF there is the possiblility of reducing hammer blow too much and 
>reducing power by trying to "regulate it out." Sometimes, either 
>because upon investigation you find that the centerpin height 
>relationships to the string height have been tampered with, or 
>possibly set incorrectly originally(?!) you may want to raise or 
>lower the back mounting block (usually raise). If you do this you 
>can reduce or eliminate the tendency to lock up on fast shallow 
>repetition but you should rotate the entire stack around the hammer 
>center pin by lowering (in most cases) or raising the front mounting 
>block. This is the usual orientation for the stack in Steinways, 
>higher in back. If you just raise or lower the rear block thereby 
>raising the wippen (repetition support flange,ala Steinway) center 
>you will throw the hammer center forward or backward causing among 
>other issues centering problems. Depending on the degree to which 
>one does this you may have to plug and redrill the screw holes in 
>the mounting blocks although usually there is enough "play" in the 
>cleat holes. This is the indicated "fix" in MM's fore finishing 
>notes and Bob Marinelli and I have done this many times. It is 
>important to note that pinning the balancier up is also very 
>important as others have noted and I wouldn't want to move the stack 
>around without having good friciton there first. But there can be 
>other reasons to move the stack in this way not least of which is 
>that someone else has tampered with the arrangement or that is was 
>set incorrectly originally (?!) as I have said.
>I would like to know what procedure you use Ed F. for replacing 88 
>cushions because installing 4 shims and making a few swipes with a 
>plane on the mounting blocks seems like alot less work to me. But 
>then I 've been so wrong for so long it sometimes seems like right to me.
>Chris Solliday
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