easton-archery easton tune User Manual
3
Adjust the Arrow's
Left/Right Position
Left/Right Position
Adjust the horizontal (in/out) position of the cushion
plunger or arrow rest assembly, so that the tip (center) of
the arrow point is correctly aligned with the type of
equipment you shoot, as described below.
plunger or arrow rest assembly, so that the tip (center) of
the arrow point is correctly aligned with the type of
equipment you shoot, as described below.
Finger Release (RF,CF)
Align the “tip” of the arrow point
1
/
16
" to
1
/
8
" (1.6-
3.2 mm) or less outside the bowstring with the
bowstring properly centered according to Fig. 7. The
arrow tip is placed slightly outside the string to provide
compensation for the amount the cushion plunger or side
loading device compresses into the bow when the arrow is
released. See Fig. 4.
arrow tip is placed slightly outside the string to provide
compensation for the amount the cushion plunger or side
loading device compresses into the bow when the arrow is
released. See Fig. 4.
With a finger release, the arrow bends horizontally, first
bending in toward the bow, then bending away from the
bow, which causes the arrow shaft to leave the arrow rest.
In the next bending sequence, the arrow nock disengages
from the bowstring. The arrow is then on its way, freely
oscillating all the way to the target. The amount of oscillation
decreases as the arrow travels farther from the bow.
bending in toward the bow, then bending away from the
bow, which causes the arrow shaft to leave the arrow rest.
In the next bending sequence, the arrow nock disengages
from the bowstring. The arrow is then on its way, freely
oscillating all the way to the target. The amount of oscillation
decreases as the arrow travels farther from the bow.
Mechanical Release (CR)
Align the “tip” of the arrow point down the
center of the bowstring. See Fig. 5. The center
line (axis) of the arrow must start out in a direct
line (axis) of the arrow must start out in a direct
line with the bowstring when the bowstring is aligned to
the balanced limb center. See Fig. 7.
the balanced limb center. See Fig. 7.
When using a release, the arrow most often bends vertically,
rather than horizontally. Therefore, there is no need for an
inward compression device such as a cushion plunger.
Follow the bow tuning methods in the Fine Tuning and
Micro Tuning sections on pages 12-14 to find the best
in/out position for your arrow shaft, which allows the
arrow nodes to be in direct alignment to the target.
The diagrams in Fig. 7 indicate the correct in/out arrow
position for your shooting style.
rather than horizontally. Therefore, there is no need for an
inward compression device such as a cushion plunger.
Follow the bow tuning methods in the Fine Tuning and
Micro Tuning sections on pages 12-14 to find the best
in/out position for your arrow shaft, which allows the
arrow nodes to be in direct alignment to the target.
The diagrams in Fig. 7 indicate the correct in/out arrow
position for your shooting style.
Tuning—Bow Setup
Arrow
Tip Out
Tip Out
1
/
16
"-
1
/
8
"
Arrow
Tip in
line
with
bowstring
Tip in
line
with
bowstring
Recurve Bow
Finger Release
Finger Release
Compound Bow
Finger Release
Finger Release
Compound
Bow
Mechanical
Release Aid
Bow
Mechanical
Release Aid
Bowstring
aligned
with limb center
aligned
with limb center
Bowstring aligned with
balanced limb center
balanced limb center
Arrow Nodes - As the arrow oscillates, the nodes
remain in direct alignment to the target. This
diagram clearly illustrates the front and rear node
positions of the arrow. The front node is usually
closer to the front end of the arrow than the rear
node is to the nock end. This is due to the mass
weight of the point—nodes will always be located
closer to the heavier mass.
remain in direct alignment to the target. This
diagram clearly illustrates the front and rear node
positions of the arrow. The front node is usually
closer to the front end of the arrow than the rear
node is to the nock end. This is due to the mass
weight of the point—nodes will always be located
closer to the heavier mass.
Front Node
Rear Node
When there is
no pressure
on the
cushion
plunger, the
finger-
released
arrow nodes
are aligned
slightly
outside the
center of the
bowstring.
no pressure
on the
cushion
plunger, the
finger-
released
arrow nodes
are aligned
slightly
outside the
center of the
bowstring.
As the
cushion
plunger
compresses,
the nodes
of the arrow
come in
direct
alignment
to the
target.
cushion
plunger
compresses,
the nodes
of the arrow
come in
direct
alignment
to the
target.
Line to target
Line to target
Direct Line
to Target
to Target
The arrow tip is
aligned down
the center of the
bowstring.
Nodes of the
arrow are in
alignment to the
target. (Since the
arrow bends
vertically when
using a release,
the nodes stay in
alignment with
the center of the
bowstring.)
aligned down
the center of the
bowstring.
Nodes of the
arrow are in
alignment to the
target. (Since the
arrow bends
vertically when
using a release,
the nodes stay in
alignment with
the center of the
bowstring.)
The arrow is
not
positioned
to leave the
center of the
bow—it is
out too far.
Nodes are
not in
alignment to
the target.
not
positioned
to leave the
center of the
bow—it is
out too far.
Nodes are
not in
alignment to
the target.
Line to
target
target
Front node
position
position
Bowstring
to target
alignment
Rear node
position
to target
alignment
Rear node
position
Top View of
Arrow
Arrow
Fig. 7 Arrow Centering
Fig. 3 Nodes
Fig. 4
Fig. 5
Compound
Mechanical
Release (CR)
Mechanical
Release (CR)
Fig. 6
Misaligned Arrow
RF, CF, CR (Incorrect
Arrow Rest Position)
RF, CF, CR (Incorrect
Arrow Rest Position)
Arrow
Tip Out
Tip Out
1
/
16
"-
1
/
8
"
Nock
Nock
Nock
Aligning the Nodes
Finger
Release
(RF, CF)
Release
(RF, CF)