Introduction
Allis-Chalmers 18-30: Historical Standard-Tread Tractor
The Allis-Chalmers 18-30 is a classic agricultural tractor produced between 1918 and 1921. Originally introduced as the 15-30 model, it was renamed following its performance in the Nebraska tractor tests. Manufactured in West Allis, Wisconsin, this machine represents a significant era in early 20th-century American farm mechanization.
Engine and Performance
The tractor is powered by a 4-cylinder gasoline engine featuring a vertical valve-in-head design and liquid cooling. With a displacement of 460.7 cubic inches (7.6 liters), the engine produces 33 horsepower at a rated speed of 830 RPM. Fuel delivery is managed by a Kingston L 1.5-inch carburetor, and an oil bath air cleaner is utilized to protect internal components from dust during field operation.
Transmission and Drivetrain
The 18-30 utilizes a two-wheel drive system. The powertrain is connected to an unsynchronized gear transmission providing two forward speeds and one reverse speed. Engagement is controlled via a hand-operated expanding shoe clutch, a common mechanical configuration for tractors of this period requiring direct operator control.
Dimensions and Construction
This standard-tread tractor has a total weight of 6,150 lbs (2,789 kg). Its physical footprint measures 135 inches in length, 66 inches in width, and 68 inches in height. The machine is equipped with steel wheels, featuring 36x6 steel agricultural tires on the front and 50x12 steel agricultural tires on the rear, reflecting the standard heavy-duty construction of the era.
Conclusion
With 1,160 units built, the Allis-Chalmers 18-30 served as a robust and reliable workhorse for early mechanized farming. Its design, characterized by an open operator station and high-displacement engine, highlights the engineering priorities of durability and mechanical simplicity prevalent during the post-WWI agricultural expansion.
Production Information of Allis Chalmers, 18-30
- Original price was $1,785 in 1919
- Standard-tread tractor
- Originally named the Allis-Chalmers 15-30, the tractor was renamed 18-30 after the first Nebraska test.
- Built in West Allis, Wisconsin, USA
| Manufacturer | Allis Chalmers |
|---|---|
| Total built | 1160 |
Dimension and Tires Information of Allis Chalmers, 18-30
| Length | 135 inches [342 cm] |
|---|---|
| Weight | 6150 lbs [2789 kg] |
| Width | 66 inches [167 cm] |
| Height | 68 inches [172 cm] |
| Ag front | 36x6 steel |
|---|---|
| Ag rear | 50x12 steel |
Engine Specifications of Allis Chalmers, 18-30
- Liquid-cooled vertical valve-in-head
- Gasoline
- 4-cylinder
| Fuel system | Kingston L 1.5" carburetor |
|---|---|
| Displacement | 460.7 ci [7.6 L] |
| Air cleaner | Oil bath |
| Bore/Stroke | 4.75x6.50 inches [121 x 165 mm] |
| Coolant capacity | 40 qts [37.9 L] |
| Rated RPM | 830 |
Transmission Information of Allis Chalmers, 18-30
Transmission variants 1
| Type | Unsynchronized gear |
|---|---|
| Gears | 2 forward and 1 reverse |
| Clutch | Hand-operated expanding shoe |
Mechanical Specs of Allis Chalmers, 18-30
- Two-wheel drive
- Open operator station.
Power Information of Allis Chalmers, 18-30
- Https://www.tractordata.com/farm-tractors/007/9/8/7982-allis-chalmers-18-30-tests.html
Where it sits
With 33 hp[B] HP, the Allis Chalmers 18-30 sits just below 20-35 (38 HP) in Allis Chalmers's range. Its power puts it in the 66th percentile of 1910s models in our database (158 machines).
Frequently asked questions
How much horsepower does the Allis Chalmers 18-30 have?
The Allis Chalmers 18-30 delivers 33 hp[B] HP.
What years was the Allis Chalmers 18-30 produced?
The Allis Chalmers 18-30 was produced in 1918-1921.
What engine does the Allis Chalmers 18-30 have?
The Allis Chalmers 18-30 is powered by a Gasoline, 4-cylinder engine.
What transmission does the Allis Chalmers 18-30 use?
The Allis Chalmers 18-30 uses a Unsynchronized gear transmission.
How much does the Allis Chalmers 18-30 weigh?
The Allis Chalmers 18-30 weighs 6150 lbs [2789 kg].
Is the Allis Chalmers 18-30 4WD?
The Allis Chalmers 18-30 is available in 2WD.