GOMACO: GT-3600

Everything You’ve Asked For In
A Curb And Gutter Machine

24 inch (610 mm) Radius
Now Available With G22 Controls
Multi-Application Versatility
Two-Speed Track System
Enhanced On-Site Mobility
Sideshifting Trimmerhead
High Production
Designed For Transportability
Designed With Safety Features
Selective Steer System
All-Track Positioning (ATP)
All-Track Steering (ATS)
Hook-And-Go Mold System
Simultaneous Trim & Pour
Vertical Adjusting Trimmerhead
Operator Station Visibility
Operator Remote Control
Push-Button Steering Control

	Video Clip: GT-3600 Features (5.2 MB, 4 minutes long)
	Video Clip: GT-3600 Stringless Islands (24.4 MB, 8 minutes long)
Windows Media Video (.wmv) requires Windows Media Player

Featuring Versatility And Dependability Worldwide

GOMACO’s GT-3600 is one of most versatile, dependable and high-production curb and gutter machines with job-proven results throughout the world. The machine is designed with state-of-the-art technology and multiple features.

The three-track GT-3600 is a multi-application trimmer/slipform paver.

Applications for this machine include:

The GT-3600 features GOMACO’s patented simultaneous trim/pour concept. The unique design, multiple sensoring, and GOMACO G21 Control System, or the optional G22 control system, allow the GT-3600 to automatically slipform a tight radius.

A major consideration in design is quick and easy job-to-job mobility. The GT-3600 will transport at 8 ft. 6 in. (2.59 m) with trimmerhead attached or 8 ft. 3.2 in. (2.52 m) without trimmerhead. The transport length is 17 ft. 4.97 in. (5.31 m) and the height is 8 ft. 1 in. (2.46 m).

The GOMACO GT-3600 is carefully designed with safety features to give years of dependable and safe service. The emergency stop buttons are located on the operator’s console and at strategic points on the machine, providing optimal use for specific applications. Other safety features include track guards, warning decals, an operator’s manual, and a safety manual. GOMACO machines are also designed to provide safety with the machine operator having maximum visibility over the entire paving operation.

GOMACO Corporation recommends the implementation of all safety procedures.

Select Any One For A Close-Up

Travel Speed Doubles With Two-Speed Track System

The two-speed track system provides fast job-site mobility. The travel speed on the GT-3600 three-track machine has nearly doubled from 66 fpm (20 mpm) to 125 fpm (38 mpm).

Another feature that makes this machine so versatile is All-Track Positioning (ATP) and All-Track Steering (ATS). Veteran concrete contractors who depend on their machine to make them money will testify to the advantages of ATP and ATS, such as getting around obstacles, avoiding obstacles, set-up time, mounting molds, transporting the machine, and loading and unloading. There’s a lot of things you can do with an All-Track Positioning, All-Track Steer machine that would be difficult or impossible to do if you didn’t have it. A GOMACO machine with All-Track Steering is able to pour a true radius because all of the tracks can turn as the paver maneuvers through the radius.

Also featured on this machine are the Commander III style legs that are 15 percent larger in diameter than the previous legs. The legs are also equipped with “smart” cylinders. The cylinders, along with the G21 controller, allow the operator to teach the “smart” cylinders to set the desired degree of leg rotation. This keeps the tracks from hitting any objects on minimum-clearance projects.

GOMACO’s Hook-And-Go System Is Quick And Easy

How Quick Can You Connect? Just Hook And Go!

GOMACO’s Hook-And-Go mold mount system has no pins or latches and makes it quick and easy to change molds.

Simply drive the GT-3600 up to the mold and hook the mount to a special attachment plate. The operator hydraulically lifts the mold and goes back to work slipforming the project...just hook and go.

New GT-3600 molds will be built for this system and existing molds can easily be retrofitted in the field.

	Video Clip: Hook-And-Go (2.6 MB, 60 seconds long)
Windows Media Video (.wmv), requires Windows Media Player

Operational Visibility And Safety

GT-3600 Sideshifting Trimmerhead Avoids Obstacles

The trimmerhead can be sideshifted up to 48 in. (1219 mm) for clearance of obstacles and to allow the GT-3600 to pave right up to the obstacle. The mold can then be hydraulically lifted off the curb and over obstacles.

The operator has a clear view of the conveyor, concrete truck and the chute man, providing operational safety.

Sectionalized Trimmerhead

The standard 30 in. (762 mm) wide trimmerhead with insert sections provides up to a 66 in. (1676 mm) wide sectionalized trimmerhead with right-hand or left-hand discharge available. The insert sections are available in 12 in. (305 mm), 18 in. (457 mm), and 24 in. (610 mm) widths.

First In The Industry To Design A Three-Track Machine To Slipform
24 Inch (610 mm) Radius Curb

• Unique design allows automatic adjustment of trajectory in and out of a tight radius.

• Multiple sensoring and mold positioning assures perfect placement of concrete through a tight radius.

A two-foot (610 mm) radius ribbon curb is accomplished with the unique machine design, operator station visibility, GOMACO G21 Control System, hopper, mold positioning, multiple sensoring and three-track versatility.

The GT-3600 is designed to eliminate guesswork and automatically adjusts trajectory in and out of a tight radius. The GT-3600 is equipped with three steer sensors. One sensor is located at the front of the mold (sensor 1); one is located at the front of the stainless (sensor 2); and one is aligned with the back of the stainless (sensor 3). As the GT-3600 enters the radius, the operator switches from sensor 1 to sensor 2 with a toggle switch.

The mold on the GT-3600 is positioned to assure perfect placement of the concrete through a radius. Also important for a tight radius are travel speed, mix design and slump of concrete.

The hopper on the GT-3600 is designed for extra concrete capacity. Loading the hopper full with the 15 ft. (4.6 m) long, 24 in. (610 mm) wide charging conveyor prior to going into the radius allows continuous travel through the radius without waiting for concrete delivery.

State-Of-The-Art Technology Provides High Production, Versatility,
And Easy Operation

Most Powerful Trimmer On The Market Today - The new optional trimmerhead is directly driven with a radial piston hydraulic motor in a closed loop hydraulic system, making this trimmer the most powerful trimmer on the market today. The motor provides an increase in torque for more power and a faster tooth-tip rotational speed which moves the material out of the trimmerhead at a higher rate.

New Generation Lightweight Shroud - The new lightweight, molded fiberglass shroud allows easy removal or access to the engine components.

New Sensor Arms and Mounts - GOMACO engineers have redesigned the GT-3600 sensor arms and mounts. They are more durable, lighter weight and easier to manipulate than ever before.

New Legs Increased By 15 Percent - The new legs on the GT-3600 have increased in diameter by 15 percent, providing the same quality and durability as the Commander III legs.

Fast Concrete Loading Provides Increased Production

Fast concrete loading provides high-production results and there are two conveyor systems to choose from with the GOMACO GT-3600. The standard conveyor for the GT-3600 is 15 ft. (4.6 m) long and 24 in. (610 mm) wide and has a belt speed variable up to 260 fpm (79.25 mpm). It is hydraulically powered, reversible with charging hopper. The pivot mount conveyor has hydraulic lift and positioning. The mold is designed with extra concrete capacity, to allow slipforming through a complete radius without waiting for concrete delivery.

Also available is the auger that provides fast and efficient concrete flow. The auger has increased flighting spacing with a 16 in. (406 mm) pitch for efficient handling of concrete. It has carbide wear shoes on the flighting that provide durability and longer wear time. The redesigned trough on the auger fits tighter to the flighting for better concrete flow.

GOMACO's auger provides
fast and efficient concrete flow.

Conveyor Belt Wiper

The conveyor belt wiper is a standard bolt-on attachment for the GT-3600 and features segmented blades mounted on individual cushions. This feature allows the cleaning tips to conform to the centers of the belt for constant contact without the need for constant adjustment. The spring tension design allows quick and easy adjustment.

Guillotine-Style and California-Style Curb Depressors for Driveways

Another feature on the GT-3600 is the optional hydraulically powered driveway blockout (seen below), available for curb and gutter molds. This feature allows the GT-3600 to eliminate wasted material while slipforming through driveways.


Guillotine-style curb depressor	California-style curb depressor

Guillotine-style curb depressor, hydraulically powered, has a straight blade that enters the face of the curb, while slipforming through driveways. Can be changed to other molds if molds are slotted and clamped to accept the driveway cutout.

California-style curb depressor, hydraulically powered, has a curved blade that enters the face, for use on curb and gutter molds while slipforming through driveways.

Hydraulic Vertical Adjustment

The ability to raise and lower the trimmerhead and mold makes the GOMACO GT-3600 ideal for rehabilitation work and going over driveways, manholes and other obstacles. The GT-3600 can pave right up to the driveway (left photo) where the operator raises the mold, allowing the machine to travel across the distance of the driveway without leaving the stringline. The mold is then lowered to grade and slipforming continues (right photo).

The Digital Power of GOMACO’s Exclusive G21 Operating System

G21 is GOMACO’s award-winning, proprietary software and control system... GOMACO was recognized for its commitment of resources to the development of this revolutionary software and operating system that combines intelligence with simplicity for GOMACO construction equipment. It is one of the few operating systems awarded a Top 100 Award from Construction Equipment magazine and a Top Innovations Award from Equipment World magazine. The G21 operating system is exclusive to GOMACO.

GOMACO’s Optional G22 Operating System

G22 is GOMACO’s proprietary software and control system. The GOMACO G22 is a revolutionary software and operating system that combines intelligence with simplicity for GOMACO construction equipment. The new graphical display provides the operator with an easy to understand interface to the machine controls. The G22 operating system is exclusive to GOMACO products.

The user-friendly screen and controls are simple, to allow operators to learn in a very short time. A simplified approach with screen icons reduces the operator’s learning curve to a minimum. The G22 features a 6.5 in. (165 mm) anti-glare display screen with sensor-controlled backlight levels. It provides superior visibility under all operating conditions. A dual language feature is available on the G22. It features the ability to operate in English or a second language. It also offers the choice of metric or imperial measurements.

Advanced system diagnostics on the G22 automatically pinpoint and identify electrical circuit opens, shorts and fault codes to aide in troubleshooting. Faults are identified and a full explanation of recommended actions are given. That means less downtime and a quicker uptime on service because the G22 actually helps eliminate costly service time searching for system problems.

Selective Steering For The G22 Control System

The control system also has a selective steering dial for five different modes of controlling the three tracks. This provides a choice for negotiating job-site conditions and loading for transport. The Crab Steering selection gives a quick approach and coordination to the stringline. The GT-3600 can easily reverse steer on-line to within 1/8 inch tolerance for a quick start. High-production performance through radii is accomplished with the control system’s tight radius software and the ability to toggle steering control from the lead sensor, eliminating continued manual sensor adjustments. Every circuit on the GT-3600 is electronic-over-hydraulic for easy, accurate adjustments and an instant, controlled response. Smart hydraulic steering cylinders, interfaced with the G22, allow push-button steering setup. The programmable cylinders also allow steering parameters of the tracks to be set with the touch of a button. Optional auto-transition and slope compensation software is available to automatically transition in and out of “catch” or “spill” gutter. It automatically compensates for mold position in relationship to the stringline as a result of slope change.

		Stringline Steer Mode ... This mode is selected when steering is to be controlled by the steering sensors. The controller automatically recognizes where the sensors are plugged in and assigns steering, slope, or dual stringline to the appropriate tracks and display meters. With the machine on line and in automatic steer, the operator walks the machine in reverse to the existing curb and gutter, utilizing the Reverse Steer feature. Then, flips the switch to forward steer to start slipforming.

		Coordinated Steer ... For minimum turning radius. When the steer select switch is in the “coordinated steer” position, the steering control dial will control the turning of the tracks. When the dial is in the center position, the tracks will be straight ahead. If the dial is turned left or right from the center position, the leading tracks will turn in the corresponding direction and the trailing tracks will turn in the opposite direction.

		Crab Steer ... Walk sideways for ease in putting the machine on line. When the steer select switch is in the “crab steer” position, the steering control dial will control the turning of the tracks. If the dial is turned left or right from the center position, all tracks will turn in the corresponding direction to walk the machine to the side.

		Front Steer ... When the steer select switch is in the “front steer” position and the steering control dial is turned left or right from the center position, the front tracks will turn in the corresponding direction and the rear tracks will remain straight.

		Rear Steer ... When the steer select switch is in the “rear steer” position and the steering control dial is turned left or right from the center position, the rear tracks will turn in the corresponding direction and the front tracks will remain straight.