Mathews Inc.
Tuning Question?
Equipment
Contributors to this thread:
Quinn @work 20-Dec-22
Bigdog 21 20-Dec-22
Bigdog 21 20-Dec-22
fdp 20-Dec-22
Castle Oak 20-Dec-22
fdp 20-Dec-22
Blood 20-Dec-22
sticksender 20-Dec-22
x-man 20-Dec-22
12yards 20-Dec-22
Bow Bullet 20-Dec-22
Quinn @work 20-Dec-22
sticksender 20-Dec-22
Bow Bullet 20-Dec-22
Bowfreak 21-Dec-22
Bowfreak 21-Dec-22
From: Quinn @work
20-Dec-22
Have a Hoyt RX 1 with Hamskea drop away rest. Arrows are hitting the target where pins are set for. I have noticed that upon release my arrow fletchings are tailing to the left on the way to the target. They are hitting the target as aimed but are impacting at an angle with the fletching to the left?

I feel that I'm losing a lot of Kenetic energy on the way to the target but am hitting the desired spot just the arrows are at an angle? My last 2 animals have died but I feel like they should of been pass throughs and not 100+ yard blood trails?

Do I need to move my arrow rest or what?

From: Bigdog 21
20-Dec-22
Move rest to right, are spine could be weak try a lower tip wt.

From: Bigdog 21
20-Dec-22

Bigdog 21's embedded Photo
Bigdog 21's embedded Photo

From: fdp
20-Dec-22
Yep...what he said.

From: Castle Oak
20-Dec-22
Spray the rest with foot powder and look for any signs of the fletching making contact. If not, measure the bow's axle to axle and make sure cables/string has not stretched. Check cam timing. Then nock an arrow and measure centershot-it should be 13/16" or very close. Don't attempt to do any tuning until you're sure bow and setup are in spec. Also, since you probably have layered up for hunting/practice, make sure your clothing is not getting in the way and that you haven't changed your anchor due to heavy clothing. Let us know what you find and then we can proceed with tuning.

From: fdp
20-Dec-22
Fletching clearance and centershot adjustment are all elements of tuning.

From: Blood
20-Dec-22
The RX1 has a tunable yoke. If your rest is centered, shorten the left yoke in 1/2 turn increments until you get a bullet hole. I’d try that before I moved the rest, if it was centered.

From: sticksender
20-Dec-22
Blood is correct.....after everything is set to spec (including a-to-a, cam timing, nock height set dead-level to slightly above, and center shot at 3/4 to 13/16) then thereafter setting up the older Hoyt bows starts with yoke tuning. Center shot adjustment is unlikely to work if cam lean is not where it needs to be. You can verify if the yoke is about right by checking with an arrow shaft laid flat against the surface of the upper cam. The shaft should cross the nocking point area of the bowstring at about dead center. Once you get the yoke where it needs to be, you'll have better luck making tiny adjustments on center shot (say about 1/64" at a time).

From: x-man
20-Dec-22
Yes, moving the rest away from the 13/16" mark by more than 1/16" is a sure sign that there's something else wrong. Every bow I'm aware of is engineered to be at a 13/16" centershot setting. If you installed the rest yourself, make sure the arrow shaft centerline is 13/16" from the riser first. Then check your cam lean / limb twist. Then get yourself a homemade paper tuning device and check that.

There are many things that can cause poor paper tears other than the rest placement. How you place your hand on the grip, too long of a draw length, grabbing the bow at the shot, too much string pressure on your face at full draw, too weak of a arrow spine, ect... Once tuned, you should be able to move stiffer in arrow spine without affecting your good flight, but not weaker.

From: 12yards
20-Dec-22
You can also move your cable guard toward your arrow very slightly if you have ample vane clearance. This solved a nock left issue I had on an Elite Synergy.

From: Bow Bullet
20-Dec-22
@sticksender - for a right handed shooter, do you place the arrow on the left side of the cam or right?

From: Quinn @work
20-Dec-22
Thanks for all the help everyone!

From: sticksender
20-Dec-22
Bow Bullet, along the left side of the cam (opposite of the cable guard side)

From: Bow Bullet
20-Dec-22
Thanks sticksender

From: Bowfreak
21-Dec-22
One of two things....either you need a simple yoke adjustment to clean up your left right tear or you need to move the point where your rest activation cable attaches to the limb closer to or farther away from the limb pocket. You will need to dig a little deeper to correct. First thing is to make sure you don't have clearance issues. If no clearance issues you can clean up your left/right issue with bare shaft tuning or paper tuning. A tail left paper tear or a bare shaft right of fletched shaft requires twists added to the left yoke. I always remove an equal amount of twists on the opposite yoke to try to maintain cam timing.

From: Bowfreak
21-Dec-22

Bowfreak's Link
For timing of a Hamskea, follow this link.

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