[CAUT] Knuckle Direction

[Norman Cantrell]

Paul
 
It is my understanding that you want the nap of the leather to flow toward the rest position of the jack.  There will be ample energy to move the jack out from under the knuckle and a little scrubbing aloows for more control by the player,  but you want the least resistance as it returns to its rest position.  
 
Regards
 
Norman Cantrell, Registered Piano Technician

--- On Tue, 6/1/10, Dempsey Jr., Paul E <dempsey at marshall.edu> wrote:


From: Dempsey Jr., Paul E <dempsey at marshall.edu>
Subject: [CAUT] Knuckle Direction
To: "pianotech at ptg.org" <pianotech at ptg.org>
Cc: "caut at ptg.org" <caut at ptg.org>
Date: Tuesday, June 1, 2010, 2:57 PM


OK, maybe just too much week-end or perhaps old-timers....

I am re-knuckle-ing a set of grand shanks. The new parts are of Able manufacture and have a pencil line on each. 

Does this line face the flange or the hammer?

I know the line indicates the direction of the nap of the leather, but which way is preferable.



Paul E. Dempsey, RPT
Piano Technician Sr.
Marshall University
Huntington, WV
304-696-5418
304-617-1149

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