McCormick-Deering 15-30

Last Updated: July 2024

Overview

The McCormick-Deering 15-30 is a historic tractor model powered by a 4-cylinder, 381.7 cubic inch, liquid-cooled, kerosene engine manufactured by International Harvester. According to independent test results, it produced a maximum of 30.41 horsepower at 1059 RPM and 15.26 drawbar horsepower at 3.2 mph. The engine features a 4.75-inch bore, 6-inch stroke, and a rated speed of 1050 RPM. It has a gear-driven transmission with 3 forward gears and 1 reverse gear. The tractor weighs 7480 pounds with the operator and measures 137 inches in length, 65 inches in width, and 70 inches in height. It has 34-inch front and 50-inch rear steel wheels with a 12-inch face and 4x8 spade lugs. Additional features include an Ensign "RW" carburetor, fly-ball governor, 15.75-inch belt pulley, Own "E4J" magneto, and Pomona air cleaner.

Key Specifications

Transmission: Gear

Operating Weight: 7480

Fuel Type: Kerosene

Technical Specifications

Engine

Manufacturer: International Harvester
Model: -
Cooling Type: Liquid-cooled
Cylinder Orientation: Vertical
Valve Configuration: Valve-in-head
Fuel Type: Kerosene
Induction Type: Natural aspiration
Cylinders: 4
Displacement (ci): 381.7
Bore (in): 4.75
Stroke (in): 6
Rated RPM: 1050
Power Output (hp): -

Transmission

Type: Gear
Forward Gears: 3
Reverse Gears: 1
Total Gears: -

Dimensions

Length (in): 137
Width (in): 65
Height (in): 70
Operating Weight (lb): 7480

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): 48
Front Tire Diameter (in): 34
Front Tire Width (in): -
Rear Tire Diameter (in): 50
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: Hand-crank
Brake Type: -
Hydraulic System Type: -

Test Results

Nebraska Tractor Test Laboratory - Test Date: October 26 to November 21, 1926

Maximum Power and Fuel Consumption

Maximum Power: 30.41 HP at 1059 rpm
Fuel Consumption at Maximum Power: 2.928 gallons per hour

Drawbar Performance

Drawbar Power: 15.26 HP with a drawbar pull of 1788 lbs and a speed of 3.20 mph
Fuel Consumption at Rated Speed: 2.118 gallons per hour with kerosene as fuel

Engine Performance

Engine Type: 4-cylinder, vertical, valve-in-head engine
Rated Engine Speed: 1050 RPM

Weight and Gear Transmission

Total Weight: 6982 lbs (with the operator)
Advertised Speeds: Low 2 mph, High 4.4 mph, Intermediate 3 mph, Reverse 2.5 mph

Fuel and Oil Consumption

Oil Consumption: Approx. 5.5 gallons of Mobile Oil BB used during the entire test

Nebraska Tractor Test Lab. (1926). Test 130: McCormick-Deering 15-30. Lincoln, NE: University of Nebraska-Lincoln. Retrieved from https://digitalcommons.unl.edu/tractormuseumlit/751