[CAUT] Black on Black... (Jack alignment)

[Michael Wathen]

I learned how to do it completely by feel.  I believe I learned the
following method from Garlick.

1. Pull the action out and on to the key bed just far enough so that all the
hammers are blocked in their travel when depressed by the key by the
superposition of the pinblock over the hammers.

2.  Turn the screw adjustment on the jack lever to the point where you can
just get the jack to skip out from under the knuckle.

3.  Turn the screw adjustment the other direction to the point where the
jack will again remain blocked under the knuckle without skipping out.

This is the ideal adjustment.  It positions the jack where is will have to
do the least amount of required work; one more thing you can do to maximize
the efficiency of the action.

Michael Wathen
Retired tech
  -----Original Message-----
  From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org]On Behalf Of Ted
Sambell
  Sent: Saturday, August 04, 2007 11:06 PM
  To: College and University Technicians
  Subject: Re: [CAUT] Black on Black... (Jack alignment)


  Jim,

  I don't know if it will work for you, but Denis Brassard, who was my
colleague at the Banff Centre came up with an idea I think was brilliant. On
the computer, you type out a page consisting entirely of lines double or
triple spaced, using the underline. Next, print this out on a transparency
and cut it into strips, each having one line and 1/2' or so wide.. To use,
lay a strip on the repetition levers ( balanciers) and carefully adjust two
jacks to the knuckles at each end of the line and bring the line of the
transparancy to the adjusted jacks. Lay all the shanks down to hold the
strip in place, and only raise one at a time to adjust the jack. The strip
is moved along as needed. I have poor vision (myopia) and this works
beautifully for me, but not all eye conditions are the same. European
actions have a line on the lever surface to bring the jacks to, but I cannot
recall if Kawai has too.

  Ted Sambell
    ----- Original Message -----
    From: Jim Busby
    To: College and University Technicians
    Sent: Saturday, August 04, 2007 9:20 PM
    Subject: [CAUT] Black on Black... (Jack alignment)


    List, Don…



    Help! Do any of you have a trick for seeing the new Kawai parts, namely
for doing the jack to knuckle alignment? I truly can’t see the black
parts/plane of the jack. (My eyes are bad, but this is way worse for me) I’
ve got some good lights and such, but it’s still difficult. I’ve been
tempted to paint white-out on the backs of the jacks… Love the parts, but
these old eyes don’t get it done anymore.



    Any tricks out there? Am I the only one experiencing this?



    Thanks,

    Jim Busby BYU
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