My apex 7 limbs are maxed out but is only at 44lbs (50lb limbs) I want to increase the draw weight by 2lbs and shorten the draw a 1/4inch.
XSPLITTER
STEP 1. Shorten the buss cable to get to 52 lbs of draw weight...that's right, GO TOO heavy on the draw weight.
STEP 2. Now, gotta twist the bowstring SHORTER and SHORTER and SHORTER to get the draw length you want, which is SHORTER.
.............When the bowstring gets SHORTER and SHORTER, the draw weight also drops. Keep going SHORTER on the string, until you hit the DL you want.
STEP 2. Now, gotta twist the bowstring SHORTER and SHORTER and SHORTER to get the draw length you want, which is SHORTER.
.............When the bowstring gets SHORTER and SHORTER, the draw weight also drops. Keep going SHORTER on the string, until you hit the DL you want.
I have an Apex 7.
NASTY thing about a single cam,
you do not have infinite adjustment.
WHAT does THAT mean?
Well,
if you ONLY work the string
and make the string LONGER,
the draw weight will CLIMB
but then...
you end up OUTSIDE the sweet spot for STARTING cam rotation,
and you go AWAY from the sweet spot for level nock travel...
which means, your groups become telephone pole groups...SKINNY left to right,
but TALLER groups than you like.
So,
you tune a SINGLE cam,
like the Apex 7....for DRAW LENGTH and for FLAT nock travel PERIOD
and you LIVE with the draw weight you end up with.
29-inch Apex 7 cam.
BUT,
the 29-inch DL label for the FIXED DRAW LENGTH cam is ...shall we say, NOT quite accurate.
The bow delivers, MY bow delivers 29.25-inches of DL.
So,
who do you FIX this on a single cam,
and
AND
preserve the FLAT nock travel, where my groups are as FLAT as a pancake?
YOU SHRINK the brace height 1/4-inch SHORTER.
What does THAT MEAN?
For a SINGLE CAM,
you GROW the ATA
to make the brace height 1/4-inch SHORTER.
You MAKE the buss cable LONGER
you make the bowstring also LONGER
to drop the brace height 1/4-inch SHORTER...
so,
I end up making a new CUSTOM buss cable LONGER than spec
I end up making a new CUSTOM bowstring LONGER than spec...
to get the brace height 1/4-inch SHORTER than spec
to get the 29-inch FIXED DL cam,
to deliver...
wait for it
wait for it...
to get a Mathews FIXED DL 29-inch cam
to deliver
29-inches.
So,
I have to live with the draw weight I end up with,
to get the 29-inch cam to deliver 29-inches of DL...
which means I shortened the DL 1/4-inch.
NASTY thing about a single cam,
you do not have infinite adjustment.
WHAT does THAT mean?
Well,
if you ONLY work the string
and make the string LONGER,
the draw weight will CLIMB
but then...
you end up OUTSIDE the sweet spot for STARTING cam rotation,
and you go AWAY from the sweet spot for level nock travel...
which means, your groups become telephone pole groups...SKINNY left to right,
but TALLER groups than you like.
So,
you tune a SINGLE cam,
like the Apex 7....for DRAW LENGTH and for FLAT nock travel PERIOD
and you LIVE with the draw weight you end up with.
29-inch Apex 7 cam.
BUT,
the 29-inch DL label for the FIXED DRAW LENGTH cam is ...shall we say, NOT quite accurate.
The bow delivers, MY bow delivers 29.25-inches of DL.
So,
who do you FIX this on a single cam,
and
AND
preserve the FLAT nock travel, where my groups are as FLAT as a pancake?
YOU SHRINK the brace height 1/4-inch SHORTER.
What does THAT MEAN?
For a SINGLE CAM,
you GROW the ATA
to make the brace height 1/4-inch SHORTER.
You MAKE the buss cable LONGER
you make the bowstring also LONGER
to drop the brace height 1/4-inch SHORTER...
so,
I end up making a new CUSTOM buss cable LONGER than spec
I end up making a new CUSTOM bowstring LONGER than spec...
to get the brace height 1/4-inch SHORTER than spec
to get the 29-inch FIXED DL cam,
to deliver...
wait for it
wait for it...
to get a Mathews FIXED DL 29-inch cam
to deliver
29-inches.
So,
I have to live with the draw weight I end up with,
to get the 29-inch cam to deliver 29-inches of DL...
which means I shortened the DL 1/4-inch.
So,
if you want 50 lbs of draw weight,
then,
obviously,
gotta shorten the buss cable
and
you CREEP TUNE a single cam
by working the bowstring twists (adding or removing twists)
and at least for ME and my Apex 7,
when the DIMPLES on the cam
form an imaginary line
that is DEAD parallel to the bowstring,
when at rest...
I get GREAT nock travel results.
So,
what happens if the draw length is NO GOOD?
Well,
you gotta live with it.
Aren't single cams a whole BOAT load of fun to TUNE?
Uhhhh,
NOPE.
Not if you are a target shooter.
So,
you can only get TWO out of THREE.
Dial in the draw length by Working the ATA LONGER to shrink the draw length...(work the buss cable to dial in draw length).
CREEP tune with the bowstring, add twists or remove twists,
and get your DIMPLES on the cam to the SWEET SPOT, for the FLATTEST possible arrow groups.
Then,
you gotta LIVE with the draw weight you end up with.
For MY Apex 7,
when I twist or untwist the bowstring,
to CHANGE,
to CUSTOM TUNE the cam starting rotation position...
for the BEST results...
for fletched groups that are as FLAT as possible...
I had to build a custom string, a NEW custom string
and a NEW custom buss cable, cuz the FACTORY rigging,
was providing the ATA to SPEC, the draw weight to SPEC,
but the 29-inch FIXED DL cam was NOT to my standards...running 1/4-inch TOO LONG.
Did I say that a single cam is a real PAIN to tune,
for target purposes?
if you want 50 lbs of draw weight,
then,
obviously,
gotta shorten the buss cable
and
you CREEP TUNE a single cam
by working the bowstring twists (adding or removing twists)
and at least for ME and my Apex 7,
when the DIMPLES on the cam
form an imaginary line
that is DEAD parallel to the bowstring,
when at rest...
I get GREAT nock travel results.
So,
what happens if the draw length is NO GOOD?
Well,
you gotta live with it.
Aren't single cams a whole BOAT load of fun to TUNE?
Uhhhh,
NOPE.
Not if you are a target shooter.
So,
you can only get TWO out of THREE.
Dial in the draw length by Working the ATA LONGER to shrink the draw length...(work the buss cable to dial in draw length).
CREEP tune with the bowstring, add twists or remove twists,
and get your DIMPLES on the cam to the SWEET SPOT, for the FLATTEST possible arrow groups.
Then,
you gotta LIVE with the draw weight you end up with.
For MY Apex 7,
when I twist or untwist the bowstring,
to CHANGE,
to CUSTOM TUNE the cam starting rotation position...
for the BEST results...
for fletched groups that are as FLAT as possible...
I had to build a custom string, a NEW custom string
and a NEW custom buss cable, cuz the FACTORY rigging,
was providing the ATA to SPEC, the draw weight to SPEC,
but the 29-inch FIXED DL cam was NOT to my standards...running 1/4-inch TOO LONG.
Did I say that a single cam is a real PAIN to tune,
for target purposes?
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