Introduction
Allis-Chalmers U Standard-Tread Tractor
The Allis-Chalmers U is a standard-tread tractor produced between 1929 and 1952 at the company's manufacturing facility in West Allis, Wisconsin, USA. With a total of 19,009 units built, this model served as a cornerstone of agricultural mechanization during its production era, including a period where it was marketed as the United Model U through the United Tractor and Equipment Corporation.
Engine Specifications
The tractor is powered by the Allis-Chalmers UM 4-cylinder gasoline engine. This liquid-cooled unit features a displacement of 318 cubic inches (5.2 liters) with a bore and stroke of 4.50 by 5.00 inches. It operates at a rated speed of 1,200 RPM, delivering approximately 34 horsepower to support standard farming operations.
Transmission and Drivetrain
The model utilizes a two-wheel drive configuration. Transmission options varied based on the wheel equipment: a 3-speed gearbox was standard for tractors equipped with factory steel wheels, achieved by removing a shifter fork. A 4-speed transmission was offered as an alternative for units configured with rubber tires. Both configurations include one reverse gear.
Dimensions and Physical Configuration
The Allis-Chalmers U measures 118.5 inches (300 cm) in length, 63.1 inches (160 cm) in width, and 53.5 inches (135 cm) in height. The machine has a base weight of 4,600 lbs (2,086 kg). It was available with various tire and wheel arrangements, including agricultural front tires (6.00x16 or steel) and rear tires (12.75x24 or steel), providing a stable platform for field work.
Conclusion
The Allis-Chalmers U is a reliable, mid-range tractor designed for general field traction. Its robust mechanical construction and long production span reflect its versatility for diverse agricultural tasks throughout the mid-20th century.
Production Information of Allis Chalmers, U
- Tractors fitted with factory steel wheels had a 3-speed gearbox, done by removing a shifter fork from the regular transmission. The U was also sold as the United Model U (1929-1931), and was distributed by the United Tractor and Equipment Corporation. United was a group of Fordson dealers who contracted Allis for a new tractor, once Ford stopped North American production of the Fordson.
- Standard-tread tractor
- Built in West Allis, Wisconsin, USA
| Manufacturer | Allis Chalmers |
|---|---|
| Total built | 19,009 |
Dimension and Tires Information of Allis Chalmers, U
| Length | 118.5 inches [300 cm] |
|---|---|
| Weight | 4,600 lbs [2086 kg] |
| Width | 63.1 inches [160 cm] |
| Height | 53.5 inches [135 cm] |
| Ag front | 28x6 steel |
|---|---|
| Ag rear | 12.75x24 |
| Ag rear | 42x11 steel |
| Ag front | 6.00x16 |
Engine Specifications of Allis Chalmers, U
- Allis-Chalmers UM
- Final engine, available in 1936 (SN 12001)
- Liquid-cooled
- Gasoline
- 4-cylinder
| Bore/Stroke | 4.50x5.00 inches [114 x 127 mm] |
|---|---|
| Rated RPM | 1200 |
| Displacement | 318 ci [5.2 L] |
Transmission Information of Allis Chalmers, U
Transmission variants 1
| Gears | 3 forward and 1 reverse |
|---|
Transmission variants 2
- The four-speed transmission was offered on tractors equipped with rubber tires.
| Gears | 4 forward and 1 reverse |
|---|
- 3-speed
- 4-speed
Mechanical Specs of Allis Chalmers, U
- Two-wheel drive
Power Information of Allis Chalmers, U
- Https://www.tractordata.com/farm-tractors/000/7/2/721-allis-chalmers-u-tests.html
Where it sits
With 34 hp[B] HP, the Allis Chalmers U sits between 18-30 (33 HP) and H3 (35 HP) in Allis Chalmers's range. Its power puts it in the 55th percentile of 1920s models in our database (181 machines).
Frequently asked questions
How much horsepower does the Allis Chalmers U have?
The Allis Chalmers U delivers 34 hp[B] HP.
What years was the Allis Chalmers U produced?
The Allis Chalmers U was produced in 1929-1952.
What engine does the Allis Chalmers U have?
The Allis Chalmers U is powered by a Gasoline, 4-cylinder engine.
How much does the Allis Chalmers U weigh?
The Allis Chalmers U weighs 4,600 lbs [2086 kg].
Is the Allis Chalmers U 4WD?
The Allis Chalmers U is available in 2WD.