Bristol 20
Power
22 hp
Production
1949-1953
Engine
Gasoline, 4-cylinder
Transmission
Gear
Introduction
Bristol 20 Agricultural Crawler Tractor
The Bristol 20 is an agricultural crawler tractor manufactured in England between 1949 and 1953. Designed for field operations requiring high stability and traction, this model belongs to the compact crawler segment of the post-war era.
Engine and Performance
The tractor is powered by an Austin A70 4-cylinder gasoline engine with a displacement of 134.1 cubic inches (2.2 liters). It features liquid cooling and an oil bath air cleaner to maintain operational integrity. The engine delivers 22 horsepower (16.4 kW) at a rated speed of 1500 RPM, with a compression ratio of 5.6:1.
Transmission and PTO
The drivetrain utilizes a gear-type transmission providing 3 forward speeds and 3 reverse speeds. The tractor is equipped with a rear power take-off (PTO) shaft operating at 540 RPM (1.375-inch shaft diameter), allowing for the connection of various agricultural implements.
Mechanical Configuration and Dimensions
As a crawler tractor, the Bristol 20 utilizes 7-inch tracks to distribute its 3000 lbs (1360 kg) weight, ensuring effective ground pressure and traction on challenging surfaces. The operator station is of the open type, and the electrical system is supported by a 12-volt starter.
Conclusion
The Bristol 20 is a specialized machine designed for agricultural tasks that demand superior traction and low ground disturbance. Its compact size and crawler design make it suitable for specific field conditions where wheeled tractors might face limitations.
Production Information of Bristol, 20
- Agricultural Crawler tractor
- Built in England
| Manufacturer | Bristol |
|---|
Engine Specifications of Bristol, 20
- Austin A70
- Liquid-cooled
- Gasoline
- 4-cylinder
| Starter volts | 12 |
|---|---|
| Displacement | 134.1 ci [2.2 L] |
| Air cleaner | Oil bath |
| Bore/Stroke | 3.125x4.375 inches [79 x 111 mm] |
| Coolant capacity | 16.8 qts [15.9 L] |
| Rated RPM | 1500 |
| Compression | 5.6:1 |
| Power | 22 hp [16.4 kW] |
Transmission Information of Bristol, 20
Transmission variants 1
| Type | Gear |
|---|---|
| Gears | 3 forward and reverse |
Mechanical Specs of Bristol, 20
- Open operator station.
| Drive | Crawler |
|---|
Power Information of Bristol, 20
| Rear PTO Type | 540 (1.375) |
|---|
Where it sits
Its power puts it in the 20th percentile of 1940s models in our database (263 machines).
Frequently asked questions
How much horsepower does the Bristol 20 have?
The Bristol 20 delivers 22 HP.
What years was the Bristol 20 produced?
The Bristol 20 was produced in 1949-1953.
What engine does the Bristol 20 have?
The Bristol 20 is powered by a Gasoline, 4-cylinder engine.
What transmission does the Bristol 20 use?
The Bristol 20 uses a Gear transmission.