2009 Compound Bows

2011 H2H Intro
H2H Prologue
Voting and Test Procedure
Disclaimers
2011 H2H Evaluation Team
Special Thanks

Results

Category Shooter Bows Speed Bows
Subjective
Noise Level Results Results
Balance/Feel Results Results
Kick/Vibration Results Results
Draw Cycle Results Results
Speed
Speed Results Results Results
Data Sheet Data Data
Final Results Results

2011 Bow Evaluation Commentary

Shooter Bows

Mathews Z7 Extreme
APA Viper V7
Martin Onza 3
Elite Hunter
Diamond Outlaw
G5 Prime Centroid
Bowtech Assassin
Hoyt CRX 32

Speed Bows

PSE Dream Season EVO
Elite Pulse
Darton DS3800
APA Mamba M7
Bear Carnage
Mathews Z7 Magnum
Bowtech Invasion CPX
Strother SX1



G5 Centroid

Personal Commentary by Jon Silks about the G5 Centroid:

While this bow may be a little bigger and heavier than the others I like it! It has a good feel and the longer axle-to-axle gives it great balance. An excellent draw cycle landed it in the number 2 spot and the unique grip was especially comfortable at full draw. The Centroid is quiet at the shot with a small kick and low level vibration. For those looking for a good all-around bow that has a little extra balance and forgiveness they should definitely take a look at this rig.

 

Bow Specs:

G5 Centroid
Axle-to-axle length: 34.00"
Brace Height: 7.0"
Mass weight: 4.3 pounds
Let-off: 80, adjustable%
Draw lengths: 27-31"
Peak draw weights:

50, 60, and 70 lbs

More detail can be found in the printed report


G5 Centroid

 


Using the Above Table:

Kinetic Energy:  (in foot-pounds) This is the energy that actually goes into propelling the arrow. Basically it is the energy that is left over from the stored energy after all of the bow system friction is accounted for.
 
Stored Energy:  (in foot-pounds) When you draw the bow you supply power/energy into the limbs. The amount of energy that the limbs can hold is known as the stored energy.
 
Efficiency Rating:  (in %) This is the amount of the stored energy (in %) that can be successfully transferred into propelling the arrow upon release. The bow design, including limbs, limb pockets, cam systems, and axle types play into the bow’s efficiency. An example would be a sealed ball bearing in the idler wheel verses a simple unsealed rod bearing. It takes more energy to rotate the unsealed rod bearing (more friction) verses the sealed ball bearing (less friction) so more of the bow’s potential energy is used. The end result is a lower efficiency rating because less stored energy is left over to propel the arrow.
 
Power Stroke: This is the actual distance that the archer moves the string from its resting position to full draw

Using The Above Graph:

The area under the graph signifies the amount of energy stored by the system from brace height to full draw (power stroke). The shape of the curve is generated by a plot of draw weight in pounds against draw length in inches and gives an indication of how the bow will feel when drawn. The more rounded the curve the more "smooth" the feel of the draw cycle, however, if the curve is "squared-off" it will likely feel more aggressive. The trade off comes in performance, as the more aggressive curve is generally indicative of more stored energy and more speed.