Introduction
Allis-Chalmers Model A
The Allis-Chalmers Model A is a standard-tread agricultural tractor manufactured between 1936 and 1942 in West Allis, Wisconsin, USA. Designed for heavy-duty field operations, this tractor represents a significant chapter in the company's mid-1930s production history, with a total of 1,225 units built.
Engine and Power
The tractor is powered by an Allis-Chalmers 4-cylinder, liquid-cooled engine running on distillate fuel. With a displacement of 510.5 cubic inches (8.4 liters) and a bore/stroke ratio of 127 x 165 mm, the engine provides substantial torque for agricultural tasks. Early models produced a claimed drawbar power of 33 hp (24.6 kW) and belt power of 44 hp (32.8 kW), while later units saw performance increases up to 39.7 hp and 51.2 hp respectively.
Transmission and Drive
The drivetrain consists of a non-synchronized gear transmission offering 4 forward speeds and 1 reverse gear. Power is delivered to the ground via a two-wheel drive configuration. This mechanical setup requires operator skill for gear shifting, typical of the era's engineering standards for heavy-duty tractors.
Mechanical Construction
The Model A features manual steering and manual contracting band brakes to manage its significant weight of 7,175 lbs (3,254 kg). The operator station is of the open type, providing full visibility over the equipment. With its 140-inch length and 63-inch width, the machine was engineered to pull up to four 14-inch plows, making it a primary power unit for large-scale cultivation.
Conclusion
The Allis-Chalmers Model A is a robust, heavy-duty tractor suited for farmers and collectors interested in mid-1930s American agricultural machinery. Its large displacement engine and substantial weight designate it for high-draught field operations, and it remains a notable example of the standard-tread tractor design of its time.
Production Information of Allis Chalmers, A
- Standard-tread tractor
- Built in West Allis, Wisconsin, USA
| Manufacturer | Allis Chalmers |
|---|---|
| Total built | 1,225 |
Dimension and Tires Information of Allis Chalmers, A
| Length | 140 inches [355 cm] |
|---|---|
| Weight | 7175 lbs [3254 kg] |
| Width | 63 inches [160 cm] |
| Height | 66 inches [167 cm] |
| Ag rear | 48x12.1 (steel) |
|---|
Engine Specifications of Allis Chalmers, A
- Allis-Chalmers
- Liquid-cooled
- Distillate
- 4-cylinder
| Compression | 4.4:1 |
|---|---|
| Displacement | 510.5 ci [8.4 L] |
| Bore/Stroke | 5.00x6.50 inches [127 x 165 mm] |
Transmission Information of Allis Chalmers, A
Transmission variants 1
| Type | Non-synchronized gear |
|---|---|
| Gears | 4 forward and 1 reverse |
Mechanical Specs of Allis Chalmers, A
- Two-wheel drive
- Open operator's station.
- Manual steering
- Manual contracting band brakes
Power Information of Allis Chalmers, A
| Drawbar (claimed) | 33 hp (early) [24.6 kW] |
|---|---|
| Plows | 4 (14 inch) |
| Plows(optional) | 51.2 hp (late) [38.2 kW] |
| Plows(optional) | 39.7 hp (late) [29.6 kW] |
| Belt (claimed) | 44 hp (early) [32.8 kW] |
Where it sits
With 56 hp[B] HP, the Allis Chalmers A sits just above 25-40 (44 HP) in Allis Chalmers's range. Its power puts it in the 87th percentile of 1930s models in our database (235 machines).
Frequently asked questions
How much horsepower does the Allis Chalmers A have?
The Allis Chalmers A delivers 56 hp[B] HP.
What years was the Allis Chalmers A produced?
The Allis Chalmers A was produced in 1936-1942.
What engine does the Allis Chalmers A have?
The Allis Chalmers A is powered by a 4-cylinder engine.
What transmission does the Allis Chalmers A use?
The Allis Chalmers A uses a Non-synchronized gear transmission.
How much does the Allis Chalmers A weigh?
The Allis Chalmers A weighs 7175 lbs [3254 kg].
Is the Allis Chalmers A 4WD?
The Allis Chalmers A is available in 2WD.