4th Axis Instructions
Here is how to use the Tek-Tech 4th Axis:
Remove your sight mount and attach the 4th Axis to your bow. Then attach your sight mount to the 4th Axis and put your sight in it.
Here’s the latest technique:
Set your windage at 20 yards on level ground. Then find a steep downhill target
at least 30 yards but farther is better. (I shoot 80 yards 14 degrees down hill)
Shoot a group. If the group is either left or right you will need to move the
4th Axis
away from the group and towards the center.
At this point the
adjustment becomes very fine and you will need to use very small turns on the
adjustment screws. (1/16th of a turn or less) Set your windage again at the
level 20 yards go back to your steep downhill. Shoot a group again. Once you are
in the center at both 20 yards flat and the steep down hill target you should be
good to go. This can take a little time but will be worth every minute spent.
Or, if you don’t have a steep target to shoot, you can do the following:
Remove your sight mount and attach the Tek-Tech 4th Axis to your bow. Then attach your sight mount and sight to it.
(1)
Figure (1) shows the "in" position.
Set up a target at 10 yards with a vertical line to shoot at.
(2)
The carpenter’s laser level (figure 2) works great indoors but is hard to see outside. Tape will also work
but is difficult to
get vertical. I use my laser level to do that.
With your sight at the “in” position (figure 1) shoot an arrow or a group at
the line and adjust the windage to hit the line. Then shoot at the line with the
sight in the “out” position. See below!
(3)
I suspect that you will see something like this. The bottom arrow (“in” position) hit the line and the top arrow (“out” position) hit ½” to the left.
(4)
While still in the “out” position loosen the adjustment set screw ¼ turn. (Figure 5)
(5)
(6)
Then take up the slack with the flathead adjustment screw ¼ turn until it is snug. (Figure 6) This will pull the 4th Axis attachment and your sight bar towards the miss.
Then do the “in-out test” again. Do not change your windage at this time. You might see something like this:
(7)
Then adjust the windage and do the “in-out test” again. I shot three arrows. One
at the “in” position and two at the “out” position. (Figure 8) Perfect alignment! It took
me about 15 minutes. However, this is designed to only get you close.
Small errors are hard to see at 10 yards.
(8)
At this time I am sure that your misses associated with hills or long yardages
will be a function of your skills. No more excuses!
There is additional set-up information posted on the 4th Axis Tuning Page.
Shoot well!
Gene Lueck
Notice!
New products will fit a Bowman Accuriser now!
Purchase Black 4th Axis here:
Purchase the Nickel plated 4th Axis here:
