Prairie Special range of sprayers represents the latest in technology and features in a package that is simple to operate, yet strong and durable. Spanning six main tank capacities across two different chassis frame sizes, there is a sprayer to suit almost every requirement.

Small frame features 1500 / 2000 / 2500 & 3000L

Large frame features 4000 & 5000L

Small frame options 1500 / 2000 / 2500 & 3000L

Large frame options 4000 & 5000L

Call us control freaks!

In today’s fast changing precision farming landscape it is easy to be left behind in the technology stakes

That’s why Goldacres make it easy, with multiple solutions to suit the basic requirements to the top end needs. For more than two decades Goldacres have relied on Raven to provide complete flow control systems with matched components to give, quite simply, unmatched flow control accuracy and stability. At the heart of the control system is a positive displacement pump run at constant rpm. This creates known flow rates across varying pressures, essential for accurate and stable flow control. In addition, two system critical components, a flow meter and three way regulator valve* combine to help achieve fast “on target rate”, plus greater flow stability with known tank agitation. The Prairie Special range of sprayers feature three controller types to suit all requirements.

3 way electric section and regulation control system

For simple fuss free flow and section control the 1500-2500L small frame Prairie Special can be fitted with a three section switch box with electric pressure regulation. This allows the operator to adjust the spray pressure to achieve the desired nozzle flow rate. The operator then drives at a set ground speed to maintain the correct application rate.

SCS450 Auto rate control system

The proven SCS range of sprayer consoles provide simple, fuss free control of the flow control duties. The SCS450 features up to 5 boom section control, 2 pre-set auto rates plus manual, pump speed readout, ground speed and several counters. If you are looking to further expand the capabilities, then the SCS range is compatible with all the leading automatic section controllers on the market.

ISO BUS Auto rate control system

Tractor cabins can get very busy with the vast range of systems requiring individual control consoles. The ISO BUS standard virtual terminal (VT) brings all the systems together into the one display. Essentially each system contains the brains, while the VT is simply the interface between the two. This means only one operator console is required. Goldacres offer the option for ISO BUS compatibility, allowing numerous leading VT displays to take over the sprayer control duties. Features like flow control pressure, pump speed readout, plus all tractor steering and task control applications can all be all monitored by the one display.

Small frame – Construction overview

To build the best sprayer you have to start with a solid platform

The small frame Prairie Special design incorporates many elements to ensure maximum strength, longevity and performance. Features such as, fully bushed pivot points, precision laser cut components and the best corrosion proof paint system. Fully welded in rotating positional jigs ensures accuracy, repeatability and quality all combined with the experience gained with thousands of sprayers in the field.

1. Chassis. Manufactured from high strength heavy walled 125x75x6mm RHS to minimise flexing and provide a stable platform for boom mounting. The rear chassis section features an integrated boom and tank support (3000L version only). Long wheel base (axle to drawbar) provides excellent boom yaw stability and reduces sideways pushing forces at the tractor.
2. Drawbar pull. Single 150mm square drawbar section allows tighter headland turning. Full 360 degree swivel forged tow eye ensures maximum articulation between sprayer and tractor. Walk through platform. Access the main tank easily and safely from either side of the sprayer. No need to walk around the sprayer or tractor to access the other side. Open foot treads provide safe access to platform in muddy conditions. Lower portion of treads fold up out of the way when not in use.
3. Boom rest. The adjustable height boom rests with rubber supports provide a soft contact point for the boom wings, minimising the chance for damage.
4. Boom parallelogram lift. The mechanism provides boom height adjustment as well as the vertical suspension.
5. Delta boom centre section. Using lightweight trussing techniques the boom centre section is light yet extremely strong. All high load pivot points are greaseable, ensuring a long service life and optimum boom suspension performance.
6. Paint and anti-corrosion system. All major components are fully grit blasted using a fractured steel shot, essential for excellent paint adherence. The bare steel components are then treated using a high build filler primer which flattens the blasted surface. All un-welded joints are seam sealed then top coated using Goldacres’ exclusive chemical resistant paint formula. Finally all components are baked in a high temperature oven until fully cured. All zinc plated pins and bolts on the boom are coated with rust preventative G15, which adds another level of corrosion protection.
7. Full modular construction technique allows many options to be easily added at the time of build or at a later date as required. Dealer Fit Options (DFO) can be retrofitted without the need for welding or drilling existing components.

Large frame – Construction overview

To build the best sprayer you have to start with a solid platform

The large frame Prairie Special design incorporates many elements from the transport and earthmoving industries to ensure maximum strength, longevity and performance. Features like fully bushed pivot points, air ride suspension components and dampeners, to the best corrosion proof painting systems. Fully welded in rotating positional jigs ensures accuracy, repeatability and quality all combined with the experience gained with thousands of sprayers in the field.

1. Chassis. Manufactured from high strength heavy walled 200x100x6mm RHS to minimise flexing and provide a stable platform for boom mounting. The rear chassis section is stepped in with integral boom and tank support allowing narrow wheel track options. Long wheel base (axle to drawbar) provides excellent boom yaw stability and reduces sideways pushing forces at the tractor.
2. Drawbar pull. Narrow drawbar final section allows tighter headland turning. Full 360º swivel forged tow eye ensures maximum articulation between sprayer and tractor.
3. Walk through platform. Access the main tank easily and safely from either side of the sprayer. No need to walk around the sprayer or tractor to access the other side. Open foot treads provide safe access to the platform in muddy conditions. Lower portion of treads folds up out of the way when not in use.
4. Air bag suspension*. Specifically designed for the Prairie Special the air bag suspension system provides a smooth soft ride for both trailer and boom whilst still limiting excessive body roll. This is achieved through the use of the large diameter bi-functional rubber bush pivot system coupled with heavy walled torque tube construction. The bolt in axle also doubles as the air reservoir for the ride height levelling.
5. Roller boom rest. The adjustable height boom rests with rubber roller supports provide a soft contact point for the boom wings, minimising the chance for damage.
6. Boom parallelogram lift. The mechanism provides 1200mm of boom height adjustment as well as the vertical boom suspension. Three heavy walled torque tubes and diagonal bracing ensure less flexing which increases boom roll and yaw stability.
7. TriTech boom centre section. Using lightweight trussing techniques the boom centre section is light yet extremely strong. All high load pivot points are fully bushed and greaseable, ensuring a long service life and optimum boom suspension performance.
8. Hydraulic cylinders. All hydraulic cylinders use quality hardened greasable ball ends firmly bolted in position, ensuring minimal joint movement and maximum boom control.**
9. Paint and anti-corrosion system. All major components are fully grit blasted using a fractured steel shot, essential for excellent paint adherence. The bare steel components are then treated using a high build filler primer which flattens the blasted surface. All un-welded joints are seam sealed then top coated using a Goldacres specific chemical resistant paint formula. Finally all components are baked in a high temperature oven until fully cured. All zinc plated pins and bolts on the boom are coated with rust preventative G15, which adds another level of corrosion protection.
10. Full modular construction technique allows many options to be easily added at the time of build or at a later date as required. Dealer fitted options (DFO) can be retro fitted without the need for welding or drilling existing components.

*Air bag suspension optional. **TriTech booms only

Delta Booms

Application made easy

The Delta boom range is ideal for growers looking to benefit from the proven stability and performance of the three way suspension system in an economical package. Designed for light to medium duty applications with widths ranging from 15m to 24m*, there is a size to suit every situation. Standard features include mild steel inner wings with lightweight aluminium outer wings, single operation boom folding system featuring the proven cable control with outer wing break back functionality, full size ¾” boom lines to minimise pressure drop across the sections for consistent spray application and full hydraulic lift and fold.

TriTech Booms

Strength, Stability, Reliability & Control

The TriTech boom range is designed for operators who demand the utmost performance, reliability and control. Time and time again the TriTech boom has been named No.1 for boom stability*, which at the end of the day, results in a superior spray result.

Features such as hydraulic yaw which precisely controls the forwards and backwards movement of the boom wings to minimise the under and over applying of chemical is now standard on all widths.

The strategically placed centre section suspension links help isolate the sprayer chassis movement over rough terrain. Combined with the tuned damping characteristics allows precise roll control enabling an optimal and consistent nozzle height to be maintained, even without the use of electronic height control systems**.

All TriTech booms are constructed using lightweight trussing techniques, which allows for a stronger design without weight, the enemy of boom agility.

*Kondinin group’s Farming Ahead magazine 2012 and 2014 **Height control systems may be required in some extreme situations

Boom essentials – standard

1. Hydraulic yaw – Two hydraulic cylinders are mechanically connected together either side of the pivoting boom centre section. As the centre yaws one cylinder is retracted, the other extended. This results in oil movement which compresses in a nitrogen charged accumulator. The result is precise boom yaw control.
2. Delta links – The key to the superior boom ride is the strategically placed delta links. In all there are four links. Each link features spherical ball ends which allow the centre to move in all directions.
3. Roll centre point – The roll centre point is the location at which the boom pivots around, both in roll and yaw.
4. Roll dampeners – educes high frequency oscillation of the boom roll.
5. 3D Breakaway – The end breakaway section protects the boom from stress damage if a ground, fence or tree strike occurs. The end section can break forwards, backwards and upwards. The spring mechanism uses an eccentric mounted sprocket and chain to provide maximum breakout force in the neutral position, then reduces the force the further the breakout.

A sprayer is only as good as its boom

Today’s sprayers are full of bells and whistles which makes spraying a whole lot easier, comfortable and efficient

It’s easy to forget what the end goal is. Precise chemical application.

Boom control can be the difference between a good spray result, and no result at all. Goldacres understand this and it is why all our sprayer designs are centred around the boom first and foremost.

Why do Goldacres booms ride so well?

Goldacres pioneered the use of lightweight aluminium in the outer boom wings over two decades ago. The philosophy was, and still is today, that mass on a boom is fine so long as it is as close to the centre as possible. Reduced mass on the boom extremities reduces boom forces in both yaw and roll. This combined with the unique boom suspension results in a very stable boom ride, regardless of the terrain.

TriTech booms are contour following, meaning that the boom level will be referenced to the sprayer chassis and not purely on gravity such as a pendulum boom. This allows the sprayer to transverse the sides of hills and contours whilst keeping the boom level to the ground at all times. This results in placing the nozzle at the optimum height above the target.

Chemical Handling

SuperFlow 40 & 60L Induction Hopper

Lower the hopper into the loading position by simply releasing the spring loaded catch, the SuperFlow hopper enables you to load powders, granules and liquids fast – up to 20 kg/min* (Atrazine) using a large flow venturi system. The lower valve has a large handle that’s easy to grip while wearing PPE and features push down drum rinse nozzle, tank flushing nozzle and simple tank level calibration.

Transcal (not shown)

The 45L Transcal is a simple and effective way of transferring and measuring liquid chemical. Using a venturi the Transcal can draw chemical from an open container using a probe, or out of an envirodrum, to provide a totally enclosed transfer system. The Transcal measures chemical transferred by volume, not flow, providing accuracy regardless of the liquid viscosity.

Venturi Probe

Standard on all models across the range, the probe is a simple method of transferring chemical into the main tank directly from a drum. It uses a venturi mounted in the main product tank.

Chemical transfer pump (4000 & 5000L only)

The 12 volt chemical transfer pump has an open flow of up to 40 l/min and can transfer chemical from any container using a probe or envirodrum coupling. The chemical transfer pump features an optional integrated flow meter to keep track of how much chemical has been transferred, providing a completely stand-alone transfer system at the flick of a switch.

Specifications