David Brown 25

Last Updated: July 2024

Overview

The David Brown 25 is a versatile tractor manufactured by David Brown. Powered by a David Brown 2.5L 4-cylinder engine, it comes in diesel, gasoline, and kerosene variants. The gasoline variant has a rated RPM of 2000 and a maximum power output of 29.12 hp. The tractor features a manual steering system and operates on a 2WD chassis with a gear transmission containing 6 forward and 2 reverse gears. It has a dry plate clutch and an operating weight of 4335 lbs with ballast. The tractor's robust structure guarantees reasonable performance, with a drawbar pull of 2855 lbs at 3.25 mph and a belt power of 28.77 hp at 2000 rpm.

Key Specifications

Power Output: 29.12

Transmission: Gear

Drive Type: 2WD

Operating Weight: 4335

Fuel Type: Diesel/Gasoline/Kerosene

Image Gallery

David Brown 25 Tractor

Technical Specifications

Engine

Manufacturer: David Brown
Model: 2.5L 4-cyl (Available in Diesel, Gasoline and Kerosene versions)
Cooling Type: -
Cylinder Orientation: -
Valve Configuration: -
Fuel Type: Diesel/Gasoline/Kerosene
Induction Type: -
Cylinders: 4
Displacement (ci): 154
Bore (in): 3.5
Stroke (in): 4
Rated RPM: 2000
Power Output (hp): 29.12

Transmission

Type: Gear
Forward Gears: 6
Reverse Gears: 2
Total Gears: -

Dimensions

Length (in): 113
Width (in): -
Height (in): -
Operating Weight (lb): 4335

Power Take-Off (PTO)

PTO Type: -
PTO Speed 1 (rpm): -
PTO Speed 2 (rpm): -
PTO Speed 3 (rpm): -

Miscellaneous

Chassis: 4x2 2WD
Drive Type: 2WD
Steering Type: Manual
Coolant Capacity (qts): -
Front Tire Diameter (in): 19
Front Tire Width (in): 6
Rear Tire Diameter (in): -
Rear Tire Width (in): -
Front/Rear Rim Diameter (in): -
Tire Type: Ag
Manufacture - End Year: -
Hitch Type: -
Hitch Category: -
Hitch Position: -
Hitch Capacity (lb): -
Operator Station Type: -
Starter Type: Electric
Brake Type: -
Hydraulic System Type: -

Test Results

Nebraska Tractor Test Laboratory - Test Date: November 1, 1954

Maximum Power and Fuel Consumption

Maximum Power: 29.12 HP (21.72 kW) at 2000 rpm
Fuel Consumption at Maximum Power: 2.72 Gal/hr (10.30 l/h) with a fuel efficiency of 0.732 lb/hp.hr (0.445 kg/kW.h)

Drawbar Performance

Power at Rated Engine Speed: 25.80 HP (19.24 kW) with a drawbar pull of 2855 lbs (12.7 kN) and a speed of 3.25 mph (5.23 km/h)
Fuel Consumption at Rated Speed: 0.763 lb/hp.hr (0.464 kg/kW.h) with a fuel efficiency of 11.37 Hp.hr/gal (2.24 kW.h/l)

Belt Performance

Belt Power: 28.77 HP (21.45 kW) at 2000 rpm
Fuel Consumption at Belt Power: 2.73 Gal/hr (10.33 l/h) with a fuel efficiency of 0.734 lb/hp.hr (0.446 kg/kW.h)

Tire and Weight

Weight with Ballast: 4335 lbs (1966 kg)
Drive Wheel Slip at Maximum Pull: 11.65%

Nebraska Tractor Test Lab.(1954).Test 530: David Brown Model 25 (Gasoline). Lincoln, NE: Nebraska Tractor Test Laboratory. Retrieved from https://digitalcommons.unl.edu/tractormuseumlit/1026