Avery 25-50

Last Updated: July 2024

Overview

The Avery 25-50 is a durable and efficient standard-tread tractor manufactured by Avery Co., Peoria, Ill. It features a 4x2 2WD chassis, an unsynchronized gear transmission with 2 forward and 1 reverse gears, and a 4-cylinder, liquid-cooled, horizontal kerosene engine with a displacement of 1061.9 ci, bore of 6.5 in, stroke of 8 in, and rated RPM of 700. The tractor has a coolant capacity of 220 qts, steel tires, and dimensions of 176 in length, 90.5 in width, and 108 in height, with an operating weight of 12500 lbs. Independent test results from the Nebraska Tractor Test Laboratory in July 1920 provide detailed performance metrics, including maximum power output, fuel consumption, drawbar performance, torque, and maintenance records.

Key Specifications

Category: Utility, Standard Tread

Transmission: Unsynchronized gear

Drive Type: 2WD

Operating Weight: 12500

Fuel Type: Kerosene

Image Gallery

Avery 25-50 Tractor

Avery 25-50 vs. Similar Tractors

Operating Weight

Average

Greater than 66% of similar tractors.

Technical Specifications

Engine

Manufacturer: Avery
Model: -
Cooling Type: Liquid-cooled
Cylinder Orientation: Horizontal
Valve Configuration: -
Fuel Type: Kerosene
Induction Type: -
Cylinders: 4
Displacement (ci): 1061.9
Bore (in): 6.5
Stroke (in): 8
Rated RPM: 700
Power Output (hp): -

Transmission

Type: Unsynchronized gear
Forward Gears: 2
Reverse Gears: 1
Total Gears: -

Dimensions

Length (in): 176
Width (in): 90.5
Height (in): 108
Operating Weight (lb): 12500

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: -
Coolant Capacity (qts): 220
Front Tire Diameter (in): -
Front Tire Width (in): -
Rear Tire Diameter (in): -
Rear Tire Width (in): -
Front/Rear Rim Diameter (in): -
Tire Type: Steel
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: July 5 to July 10, 1920

Maximum Power and Fuel Consumption

Maximum Power: Data not explicitly stated.
Fuel Consumption at Maximum Power:
Rated Load Test: 27.29 HP for 10 hours, 12.71 lb/HP.hr with Kerosene.
Maximum Load Test: 56.68 HP, 12.60 lb/HP.hr with Kerosene.
Fuel Efficiency: Information not provided.

Drawbar Performance

Power at Rated Engine Speed: 27.29 HP (20.35 kW) for 10 hours with Kerosene.
Power at Maximum Load: 56.68 HP (42.27 kW).
Travel Speed: Not explicitly stated.

Torque and Engine Performance

Maximum Torque: Data not explicitly stated.
Torque Rise: Information not provided.

Hydraulic Performance

Hydraulic Data: No stats provided on hydraulic performance in the available data.

Overall Efficiency

Oil Consumption: During the complete test, approximately 0.64 gallons of Monogram Oil F was consumed for the engine.
Reported Adjustments and Repairs:
Clutch adjusted twice.
Two spark plugs replaced.
Governor spring and cab bracing issues addressed.

Nebraska Tractor Test Lab. (1920). Test 043: Avery 25-50. Nebraska Tractor Tests. 660. Retrieved from https://digitalcommons.unl.edu/tractormuseumlit/660