PSN-L Email List Message
Subject: Lehman set up
From: "Ted Channel" tchannel@............
Date: Fri, 23 Apr 2010 12:08:40 -0600
Hi Folks, Many of you have more experience in setting up a Lehman. I =
have a basic question. Let's assume the frame and the horz arm are =
parallel. The vertical column has two pivots points, for the arm, top =
and bottom. The bottom pivot is a roller on roller and is not =
adjustable. The top pivot is a wire, which carries the weight of the =
arm. This wire has two adjustments. One is a slip nut, which allow =
the suspension wire to be shorten or lengthen, and keeps the arm =
parallel to the base. (The next adjustment on this top pivot wire is =
an adjustment screw which moves this point forward or behind that of the =
bottom pivot)
This tilt off vertical is also controlled using the front adj. leg.
My question is "as a starting point, should the top pivot point be =
perfectly vertical to the bottom pivot point" Or should it be slightly =
behind or in front of the bottom pivot point?
I have set up several Lehman's, and really not paid much attention to =
this. I think I have always started with them vertical and used the =
front leg to move the top point behind the bottom pivots.
I do know there's are lots of things to consider in this set up. but I =
would like your opinion on this point, I think I understand the =
others.
Hi Folks, Many of you have =
more=20
experience in setting up a Lehman. I have a basic=20
question. Let's assume the frame and the horz arm are=20
parallel. The vertical column has two pivots points, for=20
the arm, top and bottom. The bottom pivot is a =
roller on=20
roller and is not adjustable. The top pivot is a wire, which =
carries=20
the weight of the arm. This wire has two =
adjustments. =20
One is a slip nut, which allow the suspension wire to be shorten or =
lengthen,=20
and keeps the arm parallel to the base. (The next =
adjustment=20
on this top pivot wire is an adjustment screw which moves this point =
forward or=20
behind that of the bottom pivot)
This tilt off vertical is also =
controlled using the=20
front adj. leg.
My question is "as a starting point, =
should the top=20
pivot point be perfectly vertical to the bottom pivot point" =
Or=20
should it be slightly behind or in front of the bottom pivot =
point?
I have set up several Lehman's, and =
really not paid=20
much attention to this. I think I have always started =
with=20
them vertical and used the front leg to move the top point behind the =
bottom=20
pivots.
I do know there's are lots of things to =
consider in=20
this set up. but I would like your opinion on this=20
point, I think I understand the others.
Thanks, Ted
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