fine tuning your compound bow - Martin Archery

WHEEL TIMING (FOR TWO CAM SYSTEMS)
It is important for consistency and accuracy that your bow’s cams “roll over” at the
same instant and are in the same position when you are at full draw. Your cams
should be synchronized or “timed” to your particular style of shooting. To check the
timing, draw your bow with your fingers or release just as you would while shooting.
Different drawing methods will affect the roll over of your cams. Draw the bow using
your exact shooting method.
Cams are in
perfect time.
Upper Cam is
over-rotated and
out of sync with
the bottom cam
Adjust this yoke
by twisting up the
bottom Split
String cable.
Adjusting timing using the Split String System (synthetic cables)
This procedure can be expertly performed by your
String Anchor
local archery professional. You will need a bow press
or a bow stringer to adjust your timing using the Split
String System. First, determine which cam is ahead,
or out of sync. The Split Strings, or buss cables, should
Split
reach the end of the cable grooves on the Power Side
String
(back side) of each cam at the same time. Then, while
the bow is relaxed, remove the appropriate Split String
off its outside posts and twist in a direction that
shortens or tightens the cable. A few turns will go a
long way so proceed sparingly. If your top cam is ahead,
or rotates further than your bottom cam, twist the
bottom Split String, do the opposite if the bottom wheel
is ahead. After these steps are completed make sure
that all of your string loops are firmly secured on their
appropriate pegs before the pressure is reapplied to
the bow.
NOTE: Back your bow limbs out five turns from the riser before using a bow stringer or
a bow press. Only let a qualified professional put your bow in a bow press.
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