In the picturesque Hunter Valley, Tim Thompson visited Jared from J J Rural Contracting to explore the Thor TH40 post driver mounted on a Kubota tractor. The task at hand involves setting up a fence line using hardwood posts, which present a unique challenge due to their varying straightness and the sandy soil conditions.
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Workflow and Post Layout
Jared explained that the hardwood posts used for this fencing job are not uniformly straight, which is a common characteristic of timber. To address this, he employs a methodical approach using a string line to mark out the posts and ensure a consistent layout. By laying out the posts first, Jared can accommodate any size and diameter variations, adjusting the post hole spacing as necessary to achieve a visually appealing result.
Attention to Aesthetics
Aesthetics play a crucial role in this project, particularly since it involves constructing a post-and-rail display fence. Jared emphasizes the importance of precision, aiming for less than 10mm of deviation. Using a high string line helps in maintaining accuracy, as a plumb bob is more precise over longer distances. Despite the challenges posed by the breeze, Jared is committed to ensuring the fence is visually flawless.
Thor TH40 Post Driver in Action
The Thor TH40 post driver, mounted on the front of the Kubota tractor, is central to this fencing operation. Jared is a big fan of this equipment, praising its effectiveness. Although the driver does not have as much hydraulic adjustment as traditional post drivers, it offers significant advantages. The front-mounted design allows for work in tighter spaces without requiring excessive clearance above, making it ideal for environments with overhead obstacles like tree branches.
Managing Sandy Soil
One of the key challenges of working with sandy soil is preventing it from collapsing back into the hole after drilling. To combat this, Jared uses plenty of water to stabilize the soil and help the posts fit more securely. In sandy conditions, a larger auger is beneficial because sand doesn’t compact well, and the water helps to consolidate the hole, facilitating a smoother installation.
Driving Posts with Precision
Operating the Thor TH40 involves some skill, particularly when aligning the posts. Jared controls the driver from the tractor seat, while a groundsman assists by guiding the post into place. The tractor’s movement allows Jared to adjust the post’s alignment dynamically, making real-time corrections based on feedback from the ground crew. This setup eliminates the need to reposition and reset frequently, enhancing efficiency.
Rock-Breaking Capability
In addition to its post-driving capabilities, the Thor TH40 features a rock-breaking tip. This tool proves effective at breaking rocks, making it a versatile piece of equipment. Despite the challenges posed by large hardwood posts and the occasional rock, the Thor TH40 handles the job efficiently.
Maintenance and Convenience
The Thor TH40 has been relatively low-maintenance, requiring only minimal upkeep with regular greasing. The hydrostatic tractor paired with the driver adds to the convenience, allowing for easy forward and backward movement without the complications of a geared tractor.