Chill R Review by Jon Silks

June 3, 2014 - Mathews Inc

Mathews McPherson Series Chill R

Chill R

Mathews’ Monster Chill R couple their Harmonic Damper/Stabilizer set with past-parallel limbs, Monkey Tails, String Grubs, and a Dead End Lite String Stop to fight vibration and noise while the DYAD AVS Cam system gets the job done quickly with advertised IBO speeds reaching up to 342 fps. Stability, accuracy and performance are the target of the torque-reducing Reverse Assist Roller Guard and GeoGrid Riser, which serves as a strong and stiff shooting platform.

Mathews Archery, Inc. is an industry powerhouse and for that very reason I expect big things year in and year out. They have played their part in advancing the industry as a whole on many fronts and for that we all benefit.

Smartly recognizing customer enthusiasm for the 2013 Chill, Mathews elected to build on that success creating the new 2014 Chill R. This new version has many of the same components, features and technologies as the original; however it is longer and faster. The Chill R is home to the AVS DYAD cam system, Quad V-Lock limbs, GeoGrid riser, Reverse Assist Roller Guard, Focus Grip and more.

Grid, Grip and Guard

Since the 2010 Z7 bow model, Mathews has been producing risers that venture into a new grid-like design concept. A version of that still exists today in the form of the GeoGrid riser, which is at the heart of the all-new Chill R. The GeoGrid design allows engineers to reduce overall mass weight while increasing strength and rigidity. This equals less carrying weight and greater consistency for us.

The Focus Grip gets its name from what Mathews calls the Focus Ridge. Basically it is an archer facing raised rib that runs down the middle of the grip. The intent is to force hand pressure to the center of the grip even when form may be lacking. In addition to the performance you also get some comfort and insulation from the grip’s rubber-like material.

Mathews’ exclusive Reverse Assist Roller Guard is mounted to the GeoGrid riser nearly midway up the sight window. This system wraps the cables around the archer-side of the rollers rather than on the front side like many other systems on the market and as a result actually reduces friction and torque on the cables during the draw cycle. This of course makes the bow more forgiving, accurate and smoother to draw.

The Upshot

  • Speed/Arrow Velocity 1 (375 grain arrow): 310 fps
  • Kinetic Energy 1 (375 grain arrow) – product of speed and arrow weight: 80.04 foot-pounds
  • Dynamic efficiency 1 (357 grain arrow): 88 percent
  • Speed/Arrow Velocity 2 (425 grain arrow): 292 fps
  • Kinetic Energy 2 (425 grain arrow) – product of speed and arrow weight: 80.48 foot-pounds
  • Dynamic Efficiency 2 (425 grain arrow): 88.5 percent
  • Draw Cycle: Quick to peak with a gradual drop to a solid wall

Chill R Draw Force Curve

Draw Force Curve

Giddy Up

One of the key differences between the new Chill R and the original is brace height and resultant speed. There are obvious benefits in gaining speed, which include a flatter trajectory (less opportunity for error in judging distances) and deeper penetration. Mathews DYAD AVS (Advanced Vectoring System) cam system generates an advertised IBO rating reaching up to 342 feet per second. AVS technology moves the force vector from one side of the axle to the other during the draw cycle, which coupled with the inner and outer cable wheels, increases stored energy and letoff (power and comfort for the archer). This system also terminates the ends of each cable to the opposite cam forcing the system to work in sync and thereby automatically correcting for imbalances. This translates into dependability for bowhunters.

The DYAD AVS cam system rides on sealed bearings and stainless steel axles, produces

80 percent letoff and offers draw lengths from 25 to 30 inches in half-inch increments through a series of modules.

Girded for the War on Shock, Vibration and Noise

Mathews readies the Chill R for war against shock, vibration and noise by outfitting it with many features and technologies designed specifically for that task. The past-parallel split limbs are key warriors as they move in opposite directions at the shot cancelling much of the unused energy. Joining the fight are two Monkey Tails and a set of String Grubs both designed to remove string oscillation. Properly positioned String Grubs may actually increase speed as well. The Dead End String Stop Lite also focuses on reducing string vibration and noise. A Harmonic Damper located at the top end of the riser consists of a weight suspended in an elastomer web and is so effective at reducing vibration that other industries want a piece of it. Mathews advertises a 75 percent reduction in residual vibration from their Harmonic Stabilizer Lite, which is 70 percent lighter than the original version.


As with last year’s model the new Chill R is a great blend of shooting enjoyment and performance. It is one of the most efficient bows I have ever tested, reaching the high 80s in terms of dynamic efficiency percentage. It is surprisingly lightweight and quiet while registering small amounts of both shock and vibration. The draw cycle is a little stiff up front but not inconsistent. Balance and aim are solid and the Focus grip is both functional and comfortable.

Test Bow Specifications

  • Manufacturer: Mathews
  • Model: Monster Chill R
  • Cam System: AVS DYAD
  • Weight: 3.95 pounds (advertised); 3.9 pounds (as tested)
  • Brace Height: 6.125 inches
  • Axle-To-Length: 33 inches
  • Letoff: 80 percent
  • Draw Weights: 50, 60, and 70 pounds peak
  • Draw Lengths: 23 – 30 inches in half inch increments
  • Riser: Reflex, GeoGrid
  • Limbs: QUAD V-Lock
  • String: Zebra Trophy, 63.25 inches
  • Cables (x2): Zebra Trophy, 30.625 inches
  • Grip: Focus Grip
  • Finish: Lost AT, Black, Desert Tactical, Blue Ice, Black Tactical
  • Advertised IBO speed: up to 342 fps
  • Suggested Retail Price $999 for Lost AT – all other additional charge
  • Comments: Lightweight, quiet and solid on the target

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