Sources and field evidence
Catalog Archive: Baseline specifications compiled from historical manufacturer archives and equipment registries. Laboratory test report verification in progress.
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Engineering & Capability Benchmark
Specific output, tractive ratio, and segment percentile
Engine and power specifications
- Engine model
- Climax K
- Fuel type
- Gasoline
- Rated horsepower
- 38 hp
- Rated PTO Power
- N/A (Square Turn specification)
- Drawbar Power @ Rated Engine Speed
- 18 hp (Nebraska OECD Test 2218)
- Cylinders
- 4
- Displacement
- 8.4 L (510.5 ci)
- Bore / stroke
- 5.00x6.50 inches 127 x 165 mm
- Rated RPM
- 850 RPM
- Crankcase oil capacity
- N/A
- Coolant capacity
- N/A
Maintenance picks for the 18-35
Filters, oil and common wear parts for this model.
Transmission and chassis specifications
- Transmission type
- Friction disc
- Gears (forward / reverse)
- N/A
- Drive system
- Unknown
- Wheelbase
- N/A
- Front tire
- 61x12
- Rear tire
- N/A
- Hydraulic flow
- N/A
- Rear hitch
- N/A
Implement Draft & Ballast Matcher
Simulate draft resistance, drawbar power transfer, and optimal axle weight distribution for Square Turn 18-35.
Ballast distribution and traction efficiency depend directly on chassis drive type. Please select your tractor's configuration:
Engine demand (83.4 HP) exceeds rated power (38 HP). Reduce working speed by 1.0-1.5 mph or reduce working width.
Tractor exceeds target ballast by 1814 kg. Consider removing wheel weights to reduce soil compaction.
Instant Used Market Valuation Projector
Algorithmic resale estimate for Square Turn 18-35 (1917)
Direct Segment Rivals & Showdowns
Head-to-head match-ups calibrated by horsepower and era
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Compare similar machines
Square Turn
USA • 1 Models
Square Turn was a pioneering tractor manufacturer based in Nebraska, USA, that operated from 1917 to 1921. The company was founded by A.J. Colwell and Albert Kenney, who designed a unique front-wheel drive tractor that set it apart from competitors of the era. The tractor's innovative design featured a front-wheel drive system, which was a significant engineering breakthrough at the time, providing superior traction and maneuverability for agricultural work. The rights to the tractor were sold to the Albough-Dover company in 1916, which then began production. The Square Turn tractor quickly gained a reputation for its distinctive design and operational efficiency, making it a notable player in the early tractor market. However, the company faced challenges in scaling production and competing with larger manufacturers, leading to its eventual closure in 1921. Despite its short lifespan, the Square Turn tractor left a lasting impact on the industry with its innovative engineering and design philosophy.
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