Massey-Harris Pacemaker

Last Updated: July 2024

Overview

The Massey-Harris Pacemaker is a standard-tread, 4x2 2WD tractor manufactured by Massey-Harris Company in Racine, Wisconsin. It was designed for a variety of farm tasks. Its rugged construction is epitomized by its manual steering system and basic 4-speed gear transmission, which includes one reverse gear. The engine, a Massey-Harris 4-cylinder liquid-cooled unit with a vertical valve configuration, has a displacement of 247.7 cubic inches and operates at a rated RPM of 1200. It utilizes a vertical valve configuration and its fuel type is gasoline. Its classic design is characterized by a complete steel wheel setup. The tractor has notable dimensions of 122 inches in length and 53 inches in height, with an operating weight of 4050 pounds. Independent test results provide additional details such as transmission speeds, drawbar power, fuel consumption rates, lubrication and oil data, and technical specifications like the air cleaner and governor type.
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Key Specifications

Category: Utility, Standard Tread

Transmission: Gear

Drive Type: 2WD

Operating Weight: 4050

Fuel Type: Gasoline

Massey-Harris Pacemaker vs. Similar Tractors

Operating Weight
Average
Greater than 32% of similar tractors.

Technical Specifications

Engine

Manufacturer
Massey-Harris
Model
-
Cooling Type
Liquid-cooled
Cylinder Orientation
Vertical
Valve Configuration
Vertical
Fuel Type
Gasoline
Induction Type
Naturally Aspirated
Cylinders
4
Displacement (ci)
247.7
Bore (in)
3.875
Stroke (in)
5.25
Rated RPM
1200
Power Output (hp)
-

Transmission

Type
Gear
Forward Gears
4
Reverse Gears
1
Total Gears
-

Dimensions

Length (in)
122
Width (in)
-
Height (in)
53
Operating Weight (lb)
4050

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)
20
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: August 10 to 19, 1936

Maximum Power and Fuel Consumption

  • Maximum Power (Belt): 29.09 HP at 1200 rpm, fuel consumption of 3.14 Gal/hr
  • Maximum Power (Drawbar): 19.76 HP at 1200 rpm
  • Fuel Consumption at Rated Load: 10.39 Gal/hr, with an efficiency of 0.664 lb/hp.hr

Drawbar Performance

  • Drawbar Pull at Maximum Load (Second Gear): 2051 lbs, speed of 3.61 mph, power of 18.96 HP
  • Drawbar Pull at Rated Load (Second Gear): 1658 lbs, speed of 3.67 mph, power of 16.21 HP
  • Fuel Consumption at Drawbar Load: 7.02 Gal/hr

Engine Performance

  • Rated Engine Speed: 1200 rpm
  • Bore and Stroke: 3 7/8" x 5 1/4"
  • Cylinders: 4

Specifications

  • Manufacturer: Massey-Harris Company, Racine, Wisconsin
  • Model Number: Massey-Harris Pacemaker
  • Weight with Operator: 4050 lbs



Nebraska Tractor Test Lab. (1936). Test 266: Massey-Harris Pacemaker. Lincoln, NE: University of Nebraska-Lincoln. Retrieved from https://digitalcommons.unl.edu/tractormuseumlit/869

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