3Rivers DX5 Riser / Carbon-Foam Limbs 3Rivers DX5 Riser / Carbon-Foam Limbs

3Rivers DX5 Riser / Carbon-Foam Limbs

3Rivers DX5 Riser / Carbon-Foam Limbs
3Rivers DX5 Riser / Carbon-Foam Limbs
3Rivers DX5 Riser / Carbon-Foam Limbs

Manufacturer:

3Rivers Archery
Ashley, IN 46705
- USA -

3Rivers DX5 Riser / Carbon-Foam Limbs
3Rivers DX5 Riser / Carbon-Foam Limbs

  • Riser Model: DX5 15" Riser
  • Limb Model: Carbon Foam Longbow Limb
  • Bow Length: 60 inches
  • Recommended Brace Height: between 7-1/4 and 8 inches
  • 3Rivers DX5 Riser / Carbon-Foam Limbs

  • Riser:
  • Length (End to End): 16 inches
  • Geometry: slightly deflexed
  • Grip: medium low, pistol type grip (interchangeable)
  • Sight Window Height: The sight window measures 3-1/4 inches from the upper edge of the cut-out to the top of the shelf
  • Center Cut: 5/16 inches past center
  • Threaded Holes/Bushings: tapped for the following accessories: Plunger/Rest (2 x 5/16"x24), Stabilizer (5/16"x24), Sight (2 x 10-24).
  • Physical Weight: 28.4 oz
  • Finish: matte black powder coating finish.

  • 3Rivers DX5 Riser / Carbon-Foam Limbs
  • Limbs:
  • Length: long
  • Shape and Cross-Section: ILF type reflexed longbow limbs with a rectangular cross-section.
  • Materials: Multilaminated limbs made from Stabil Kore, syntactic foam and proprietary SA5 Carbon composite in bias and unidirectional weave. Limb wedges, butt plates and tip overlays are made from black Micarta.
  • Width at Fade-out: 1-19/32 inches
  • Width below String Groove: 17/32 inches
  • Physical Weight:: 15.2 oz (set of long limbs)
  • Finish: The limbs are protected with a clear satin epoxy finish.

  • 3Rivers DX5 Riser / Carbon-Foam Limbs
  • Take-Down-System:
    A thumb screw in the limb mounting pad, that screws into a brass bushing in the limb butt, holds the limb on the riser. A fraction of that bushing protrudes over the limb's surface and fits into a slot in the mounting pad to act as a part of the limb alignment system. The other part is a brass sleeve around the limb bolt, which fits snugly into the slotted limb butt to align the front end of the limb. Since the mounting surface of the limb is somewhat curved, the limb can pivot on the riser to a certain extent, when no string is installed. When a string is put on the bow, the slotted limb butt will be sliding all way up on the sleeved limb bolt until it hits the washer and bezel. Tightening or loosening the limb bolts will consequently change the angle of the limbs in relation to the riser and can be used to change tiller, preload and draw weight. The limb adjustments are secured with set screws that lock down the limb bolts in their current settings.
  • 3Rivers DX5 Riser / Carbon-Foam Limbs

3Rivers DX5 Riser / Carbon-Foam Limbs

  • Brace Height for Testing: 7-3/8"
  • Draw Length for Testing: 28 inches
  • Draw Weight: 52 lbs @ 28"
  • Stored energy (ft-lbs): 44.8
  • Stored energy per pound of draw weight (ft-lbs/lbs): 0.86
  • 3Rivers DX5 Riser / Carbon-Foam Limbs
  • Arrow Weight (grains): 4668 (9gpp)
  • Arrow Speed (feet per second): 189
  • Kinetic Energy of arrow (ft-lbs): 37.13
  • Dynamic Efficiency (%): 82.9
  • 3Rivers DX5 Riser / Carbon-Foam Limbs
  • 3Rivers DX5 Riser / Carbon-Foam Limbs
  • Testing Parameters:

    A force-draw curve was obtained from the reviewed bow, using a digital force gauge with a resolution of 0.1 lbs. Measured bow weight was rounded to the next half pound.
    The different arrow speeds were achieved with the bow shot from a shooting machine with a mechanical release. The string was pulled to 28 inches A.T.A. (formerly A.M.O.) which is 26-1/4 inches from the string to the deepest point of the grip.
    The (3) arrows for the speed testing had a weight of  9  grains per pound of measured (not stated) draw weight. Speed measurements were taken 3 feet in front of the back of the bow with two chronographs set up in a tandem configuration. Each arrow was shot a minimum of 6 times and overall achieved speeds were rounded to the next whole digit.
    The bow was set up with my standard 16 strand Fast-Flight string, that features one metal crimp-on nocking point locator but no other attachments, like silencers, kisser button, etc.
    Note: Numerous tests over the years showed that arrow speeds achieved with my finger release, using a clicker, run 5 fps lower on average, than the arrow speeds with a mechanical release.

3Rivers DX5 Riser / Carbon-Foam Limbs