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

[Jim Busby]

Thanks Michael,

 

Sounds good. How much pressure do you push with? Have you done it this
way and compared it to the conventional "eyeballing down the plane"? 

 

With my eyes getting worse and worse, I'm having to go by feel more and
more...

 

Regards,

Jim Busby

 

________________________________

From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org] On Behalf Of
Michael Wathen
Sent: Sunday, August 05, 2007 8:42 AM
To: College and University Technicians
Subject: Re: [CAUT] Black on Black... (Jack alignment)

 

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 <mailto:jim_busby at byu.edu>  

		To: College and University Technicians
<mailto:caut at ptg.org>  

		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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