Leading the way...
Grays continue to invest in our extensive research programme into the playing characteristics of our composite and wooden sticks. This involves both laboratory and field testing of all our sticks to assess their playing characteristics. Grays have developed extensive expertise and technical data thus enabling us to create our range of composite and wooden sticks.
The Research Programme
Grays research laboratory testing programme was done in conjunction with one of England's foremost universities. By using players of both international and club standard we also conducted hitting tests using each model within our collection of sticks.
The first part of the research process involved them hitting balls with each of our sticks whilst being filmed using special high speed cameras that had also been used extensively in ball speed tests. By filming each hit using 400 frames per second each individual swing speed and impact ball deflection speed was accurately measured and from this data the stick’s rigidity was established. By drawing together the data of the tests, Grays have been able to accurately assess the matrix formulae required in our composites and our wooden stick models.
The 'Feel' Factor
The second part of the testing was conducted in the laboratory in a controlled environment to establish the feel factor of receiving skills. This involved firing a hockey ball at each model of stick to establish how much rebound occurs when the ball makes its initial contact with the stick head. This process is an accurate simulation of ball receiving skills.
All Grays sticks comply with the the latest FIH stick regulations. We have reshaped & modified our profiles since 2012.
Here is a Technical Specification guide to the various blade profiles as well as the all important benefits that each shape provides.
The "Jumbow" blade profile is the ultimate shape and design with the curve positioned down the blade to help generate "drag flick" momentum. The curve location is now contoured at the lowest legal position allowed within the FIH regulations. The Jumbow shape has been developed working with two of the world’s top penalty corner specialists.
"Jumbow" will help players to:
- Generate "sling" momentum when executing the drag flick technique
- Creates improved "reach zone" over which you can dribble the ball
- Make passes more easily on the backhand side
- Combination of continuous blade and head profile make 3D skills easier to perform
The highly popular "Dynabow" blade profile is shaped with a curve positioned down the blade at 25cm from the base of the head – The combination of a rounder lower hand profile and uniform rounder rear blade profile help to provide excellent handling qualities as well as excellent energy transfer when hitting and drag flicking . Used and preferred by leading German international players Natascha Keller, Thilo Stralkowski, Korea’s Mi Hyun Park and many more.
"Dynabow" will help players to:
- Optimum profile for both technical play, flicking and dribbling skills.
- Improves "sling" momentum when executing the drag flick technique.
- Rounder rear blade profile provides stable energy transfer when hitting
- Helps "extend the reach zone" over which you can dribble the ball freely using both forehand and backhand.
- Rounded lower handle profile allows hands to rotate freely toenhance dribbling and 3D skills
New for 2013 the "Mid-Bow HS" range has been developed, featuring a new central spine profile positioned centrally down the rear of the blade and continues into the back of the head. The new rear shape increases both the sticks core flexural stability and energy transfer when hitting. This powerful combination creates great hitting sticks combined with exceptional feel.
"Mid-Bow HS" benefits:
High Stability - as a result of the new rear spine profile
Hitting Strength - as a result of the new fibre construction mix and improved energy transfer
Hand Speed - as a result of new bow shape
The "Standard " blade profile shape is the classic traditional straighter shape associated with Grays positioned in the mid section of the blade at 30cm from the base of the head. The curve height of the is 20 mm It has a classic bow contoured along the length of the handle and blade. Used and preferred by Germany’s Linus Butt, Belgium’s Xavier Reckinger and Japan’s Kaori Chiba.
"Standard" will help players to:
- Keep forehand and backhand passes on the pitch surface when hitting
- Make stopping control easier due to straighter blade profile
- Improve stick handling skills
It is well known that in many international hockey matches, there’s a small margin of difference between winning and losing. For 2010 the introduction of Carbon Nano Tube Technology is the latest development in improving Grays composite hockey sticks. Although small in size, these minute sized Carbon Nano Tubes play an important part in taking our hockey stick construction technology to a new level and give top players that extra percent that can swing the game in your favour. They recognise it is the small things that make all the difference.
Grays inspiration for our nano range has come from our desire to:
- Take the performance of composite sticks to a new level by improving the stick’s consistency and performance
- Improve the sticks reliabilty by increasing both the flexural strength as well as giving greater torsional stability
- Increase the sticks durability and wear performance on synthetic pitches
By introducing these new hi - tech Carbon Nano Technologies, Grays are now able to introduce and offer players the latest cutting edge technology.
- Greater consistency in performance when hitting
- Improved stability against torsional forces when controlling the ball and when hitting
- Improved feel and handling response when controlling the ball
Carbon Nano Tube Technology
Carbon Nano Tubes are molecular scale graphitic tubes that are amongst the strongest of known fibres. We have now included “Carbon Nano Tubes” as part of our resin mixture formulae. This process has involved carefully adding these nano molecule particles into the resin mix as part of the all important lay up process. The Grays formulae is so important in creating the all important stick performance qualities of increased strength and feel.
The Carbon Nanotube (CNT)
When integrated within the formulae mix of the resin, these minute sized Carbon Nano Tubes allow greater impregnation of the resin into the surface of the reinforcing fibres themselves, resulting in greater tensile strength in the bond of the resin itself on the surface of the reinforcing fibres.
How Nanotechnology works
It is the combination and integration of the use of these Carbon Nano Tubes within the resin mix combined with our Grays special composite fibre matrix constructions on these Nano models that increases the unidirectional qualities of the sticks performance.