This Thunderbird TSY6140SLR is a yarder — also known as a log yarder or skyline machine — a type of cable logging equipment used to extract felled timber from steep or otherwise difficult terrain by suspending or dragging logs along a system of rigging cables toward a central landing. Thunderbird Forest Equipment is a well-established Canadian manufacturer with a long history of building yarders, processors, and related logging machinery for the forestry industry across the Pacific Northwest and beyond.
This particular unit is the TSY-6140 model, configured as a 3-guyline swing yarder. The three-guyline configuration uses a trio of anchor lines to stabilize the tower, while the swing capability allows the machine to arc its pull across a broad corridor of terrain without repositioning, improving productivity on typical timber harvest settings. The unit is fitted with a 50-foot tower, which determines the height at which the mainline and other rigging can be elevated above the ground, influencing the span and lift achievable during yarding operations.
The machine is a 1997 model in used condition and is currently located in Oregon, USA — a region where cable logging equipment of this type sees regular commercial use given the steep, densely timbered hillsides characteristic of the area.
This description was generated automatically from the listing details and may not reflect every specification. Please confirm with the seller before purchase.