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Bulldog D7521

Lanz Bulldog D7521

Last Updated: June 2024

Overview

The Lanz Bulldog D7521 is an agricultural tractor known for its ruggedness and simplicity. It features a unique single-cylinder, liquid-cooled diesel engine with a displacement of 286.8 cubic inches. The power output of this engine is 24.5 horsepower at a low rated RPM of 850, which is typical for engines of this era, known for their large displacement and slow-running characteristics. The Bulldog D7521 utilizes a 6-speed gear transmission in a 4x2 (2WD) chassis configuration. The tractor's large bore and stroke measurements (6.693x8.268 inches) are indicative of the engine's design for torque rather than speed. Notable for its historical significance and iconic design, the Bulldog D7521 is emblematic of early 20th-century tractor engineering.

Key Specifications

Power Output: 24.5

Transmission: Gear

Drive Type: 2WD

Fuel Type: Diesel

Technical Specifications

Engine

Manufacturer: Lanz
Model: -
Cooling Type: Liquid-cooled
Cylinder Orientation: -
Valve Configuration: -
Fuel Type: Diesel
Induction Type: Naturally aspirated
Cylinders: 1
Displacement (ci): 286.8
Bore (in): 6.693
Stroke (in): 8.268
Rated RPM: 850
Power Output (hp): 24.5

Transmission

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

Dimensions

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

Power Take-Off (PTO)

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

Miscellaneous

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