Allis Chalmers All-Crop

Last Updated: July 2024

Overview

The Allis Chalmers All-Crop tractor, manufactured in Milwaukee, Wisconsin, was equipped with a 4-cylinder Continental 284 gasoline engine with a displacement of 283.7 cubic inches, a bore of 4.25 inches, and a stroke of 5 inches. It had a rated RPM of 1200 and featured a Zenith carburetor, ElocmClnn magneto, centrifugal governor, and Donaldson & Trump air cleaner. The transmission was a non-synchronized gear type with 3 forward gears and 1 reverse gear, with advertised speeds ranging from 2 1/3 mph to 5 mph. The chassis had 4 wheels, with 2 drivers and an enclosed gear drive. The clutch was a Rockford Type Y plate operated by a foot pedal. The tractor had a 51-inch diameter drive wheel with a 2-inch face and a 42-inch drive wheel. It used gasoline fuel and had a coolant capacity of 20 quarts. The operating weight was 5955 pounds with the operator. Additional features included pressure-feed lubrication and extension rims with a 6-inch width.

Key Specifications

Transmission: Non-synchronized gear

Operating Weight: 5955

Fuel Type: Gasoline

Technical Specifications

Engine

Manufacturer: Continental
Model: 284 Continental
Cooling Type: Liquid-cooled
Cylinder Orientation: -
Valve Configuration: -
Fuel Type: Gasoline
Induction Type: -
Cylinders: 4
Displacement (ci): 283.7
Bore (in): 4.25
Stroke (in): 5
Rated RPM: 1200
Power Output (hp): -

Transmission

Type: Non-synchronized gear
Forward Gears: 3
Reverse Gears: 1
Total Gears: -

Dimensions

Length (in): -
Width (in): -
Height (in): -
Operating Weight (lb): 5955

Power Take-Off (PTO)

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

Miscellaneous

Chassis: -
Drive Type: -
Steering Type: -
Coolant Capacity (qts): 20
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: -

Test Results

Nebraska Tractor Test Laboratory - Test Date: April 17 to May 13, 1931

Maximum Power and Fuel Consumption

Maximum Power: 36.09 HP at 1198 rpm
Fuel Consumption at Maximum Power: 4.093 Gal/hr with a fuel efficiency of 0.685 lb/hp.hr
Operating Temperature: 185°F coolant out, 51°F air temperature

Drawbar Performance

Rated Load (Intermediate Gear) for 10 hours: 17.77 HP with a drawbar pull of 1193 lbs at 4.83 mph
Fuel Consumption at Rated Load: 3.334 Gal/hr with a fuel efficiency of 1.133 lb/hp.hr

Varying Load Performance

Varying Load for 2 hours: 31.18 HP at 1199 rpm with fuel consumption of 3.214 Gal/hr and an efficiency of 0.623 lb/hp.hr
Average Load: 20 min runs with different loads, average for 2 hours

Torque and Engine Performance

Carburetor Used: Zenith
Engine Rated RPM: 1200 rpm
Governor Type: Centrifugal

Specifications and General Information

Motor Make: Continental, 4 Cylinder Vertical
Drive: 4 wheels, 2 drivers, enclosed gear
Clutch Type: Rockford, operated by foot pedal
Total Weight as Tested (with operator): 5850 lbs

Nebraska Tractor Test Lab. (1931). Test 189: Allis-Chalmers "All Crop". Lincoln, NE: University of Nebraska-Lincoln. Retrieved from https://digitalcommons.unl.edu/tractormuseumlit/830