Introduction
Thieman Harvester (1936-1942)
The Thieman Harvester is an American kit-built tractor manufactured in Albert City, Iowa, between 1936 and 1942. Designed for flexibility, this machine was marketed as a kit that allowed owners to customize their tractor by installing various automotive engines, most commonly the Ford Model A unit.
Engine and Performance
The tractor was primarily designed to house a 4-cylinder, liquid-cooled gasoline engine. While the Ford Model A engine was standard, the modular nature of the kit allowed for the installation of alternative engines from Ford, General Motors, or Dodge. With a displacement of 201 cubic inches (3.3 liters) and a rated operating speed of 2200 RPM, the unit produced approximately 40 horsepower. The engine configuration features a bore and stroke of 3.875 by 4.25 inches with a compression ratio of 5.9:1.
Transmission and Drivetrain
The power is delivered to the ground through a two-wheel drive system. The transmission is a manual gear-type unit, providing three forward gears and one reverse gear, allowing for basic speed control during operation.
Operator Environment and Design
The Thieman features a standard open operator station, consistent with the design practices of the era. Steering is managed via a manual mechanical system. Due to the kit-based construction method, each individual tractor may exhibit unique structural or mechanical modifications depending on the specific engine and components selected by the original assembler.
Conclusion
The Thieman Harvester serves as a unique example of 1930s custom agricultural engineering. Its kit-built nature makes it a machine of significant interest to collectors, as the flexibility in engine sourcing ensures that no two units are identical in their mechanical configuration.
Production Information of Thieman Harvester, Theiman
- Built in Albert City, Iowa, USA
- The Thieman was a kit tractor sold by the Thieman Harvester Company. The kit was available with the Ford model A engine, or the buyer could supply their own Ford, General Motors, or Dodge engine. Because of the kit nature, every Thieman is unique.
| Manufacturer | Thieman Harvester |
|---|
Engine Specifications of Thieman Harvester, Theiman
- Ford
- The engine from the Ford model A was available with the Thieman although other engines could be used.
- Liquid-cooled
- Gasoline
- 4-cylinder
| Bore/Stroke | 3.875x4.25 inches [98 x 108 mm] |
|---|---|
| Power | 40 hp [29.8 kW] |
| Displacement | 201 ci [3.3 L] |
| Rated RPM | 2200 |
| Compression | 5.9:1 |
Transmission Information of Thieman Harvester, Theiman
Transmission variants 1
| Type | Gear |
|---|---|
| Gears | 3 forward and 1 reverse |
Mechanical Specs of Thieman Harvester, Theiman
- Two-wheel drive
- Open operator station.
| Steering | Manual |
|---|
Power Information of Thieman Harvester, Theiman
| Engine | 40 hp [29.8 kW] |
|---|
Where it sits
Its power puts it in the 61th percentile of 1930s models in our database (235 machines).
Frequently asked questions
How much horsepower does the Thieman Harvester Theiman have?
The Thieman Harvester Theiman delivers 40 HP.
What years was the Thieman Harvester Theiman produced?
The Thieman Harvester Theiman was produced in 1936-1942.
What engine does the Thieman Harvester Theiman have?
The Thieman Harvester Theiman is powered by a Gasoline, 4-cylinder engine.
What transmission does the Thieman Harvester Theiman use?
The Thieman Harvester Theiman uses a Gear transmission.
Is the Thieman Harvester Theiman 4WD?
The Thieman Harvester Theiman is available in 2WD.