To advertise in this section contact Classifieds
Peter Britton on 01747 855335 email:
peter@pitchcare.com
ARTIFICIAL CYLINDER GRINDERS
Studded Disc Apparatus and Clegg Hammer
represent aspects of player- surface interaction. This is in terms of replicating the forces and stresses that athletes impart on the surfaces when running or landing, their angles of contact with the surface, their loading rates, and replicating studded footwear.
GoingStick
maintenance regimes around how the surface is performing and how they want the surface to perform, as well as providing players and coaches with a ‘surface performance reading’. To address the second issue
Consider the two devices used under PQS that measure surface strength - a 2.25kg weight falling on the surface does not compare to an athlete, weighing upwards of 70kg, impacting the surface. Comparatively, rotating a studded disc in the surface does not compare to particular movements that a player performs when in contact with the surface, or represent the surface area or stud configuration of the athlete’s boot. In summarising the above discussion, we are left with two issues:
• Devices that allow quick and easy assessment of both vertical and horizontal surface strength are not available.
• Devices that better replicate dynamic player–surface interaction are required.
Cranfield University and TurfTrax Course Services Ltd, the device is used to provide an objective measure of the ‘going’ on a racecourse. The device provides measures of vertical penetration and translational shear (horizontal) strength of surfaces, with data stored on the stick and easily downloaded onto a PC. Transferring the Goingstick
technology, from use on racecourse surfaces to use on winter games pitches, is a challenge we are currently facing; racecourse surfaces are lower in strength than winter games pitches. Additionally, providing a reading of the ‘going’ for winter games pitches is little use to a grounds manager. With this in mind, surface-
Cranfield University, we are trying to address these issues by improving pitch testing. This is in terms of both the quality and quantity of data that we can collect. We are currently trialling an existing natural turf testing device for future use on natural turf pitches, the GoingStick®. Originally developed by
As part of my research at
identified, a further device has been developed, the Dynamic Surface Tester (DST). While this device is not as portable as the GoingStick, and is currently only built as a ‘one-off’, it is being used to further our understanding of natural turf systems.
involves propelling a studded test foot onto the surface using compressed air. The device impacts the surface at a speed of up to 1.3 metres per second, and replicates the vertical stress that a player imparts onto a surface when running. With the device, we can measure the time it takes for the surface to bring the device to rest, the total distance the device penetrates into the surface and the amount of energy the surface absorbs. All three of these variables record higher values on a softer, weaker surface. Data collected from this device
The basic function of the device
Tel: 01462 683031 email:
admin@huntergrinders.com
www.huntergrinders.com DRAINAGE Artificial turf and synthetic grass supply & installation
We offer a full range products and services including: Synthetic Grass Pitches • Multi Use Games Areas Tennis court resurfacing and remarking Synthetic Cricket Wickets • Sports fencing
Sports pitch maintenance services • Ancillary Services Fencing • Sport Equipment and Supply Line marking • Maintenance and Repairs
Tel: 0871 288 3425 Email:
info@astrosport.co.uk www.astrosport.co.uk 45
Cost effective drainage quick and neat trenching work with minimal disruption to play.
AFT Trenchers
Tel: 01787 311811
info@trenchers.co.uk www.trenchers.co.uk
allows us to understand what happens to a natural turf surface when players run or land on it. This is in terms of how much the surface deforms, how quickly it deforms and the amount of energy absorption it provides. As part of our research, we are routinely using these devices on a number of natural turf pitches, with a variation of soil textures and surface constructions. This is to determine how surface behaviour varies with soil texture, soil moisture content and time of year. We welcome any feedback on this area of work from grounds managers, and would especially like to hear from those undertaking regular pitch testing. We understand that a link between scientific research and turf professionals needs to be maintained, in order to benefit future
relevant data units are being devised. Testing fifteen test points on a pitch requires less than fifteen minutes of the user’s time, which allows surfaces to be assessed on a daily basis, if desired. Having possession of an objective measure of surface strength such as this will allow grounds managers to tailor
research and ensure that research is tailored to aspects that will benefit grounds managers in daily
DRAINAGE SPECIALISTS
DRAINING 25 years in
WORTH
cleaning and maintenance Tel/Fax 01476 550266 Mobile: 07855 431119/20
email:
worthdraining@talktalk.net www.worthdraining.co.uk
CYLINDER GRINDERS
sports turf maintenance Artificial sports surfaces
DESIGN & INSTALLATION PRIMARY SYSTEMS SAND SLITTING & GRAVEL BANDING
Tel.01722 716361
www.mjabbott.co.uk
management. We hope to provide an update on our research at a later date. You can contact Matt via email at
m.c.j.caple@
cranfield.ac.uk or visit
www.cranfield.ac.uk/sas/sst for more information.
F.T. MACHINES
NEW - USED - RECONDITIONED MOWER SHARPENING MACHINES SPARES - GRINDING WHEELS
ianfearftm@aol.com 07774 258052
www.foleyunited.com www.nearytec.com
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