Introduction
Massey-Harris Pacemaker: Standard-Tread Tractor
The Massey-Harris Pacemaker is a standard-tread tractor produced between 1936 and 1939. Manufactured in Racine, Wisconsin, USA, this model served as the successor to the Wallis 12/20 within the Massey-Harris product line, designed to provide reliable power for agricultural applications.
Engine and Performance
The tractor is powered by a 4-cylinder, liquid-cooled vertical I-head engine fueled by gasoline. It features a displacement of 247.7 cubic inches (4.1 liters) with a bore and stroke of 3.875 by 5.25 inches. The engine operates at a rated speed of 1200 RPM, though it includes a Twin Power option that increases engine RPM to 1400, specifically intended to provide additional horsepower for stationary belt work. The cooling system has a capacity of 20 quarts (18.9 liters).
Transmission and Drivetrain
Power is delivered through a mechanical transmission featuring four forward gears and one reverse gear. The system utilizes a mechanical dry disc clutch. The Pacemaker is configured as a two-wheel drive machine, utilizing manual steering for operator input.
Dimensions and Mechanical Build
The tractor has a wheelbase of 78 inches (198 cm) and an overall length of 122 inches (309 cm), with a height of 53 inches (134 cm). The machine weighs approximately 3700 lbs (1678 kg). It is equipped with an open operator station and was available with various tire configurations, including both steel wheels and pneumatic agricultural tires.
Conclusion
The Massey-Harris Pacemaker was a functional standard-tread tractor of its era, noted for its Twin Power feature which allowed for versatile use between field traction and stationary belt-driven tasks. It remains a notable example of pre-war agricultural machinery engineering.
Production Information of Massey-Harris, Pacemaker
- The Massey-Harris Pacemaker replaced the Wallis 12/20 in Massey's line. The Twin Power feature increased engine rpms to provide additional horsepower for belt work. The Pacemaker was a standard (wide) front tractor, while the Challenger was the row-crop version.
- Standard-tread tractor
- Built in Racine, Wisconsin, USA
| Manufacturer | Massey-Harris |
|---|
Dimension and Tires Information of Massey-Harris, Pacemaker
| Wheelbase | 78 inches [198 cm] |
|---|---|
| Weight | 3700 lbs [1678 kg] |
| Length | 122 inches [309 cm] |
| Height | 53 inches [134 cm] |
| Ag front | 28x5 steel |
|---|---|
| Ag rear | 11.25x24 |
| Ag rear | 44x10 steel |
| Ag front | 6.00x16 |
Engine Specifications of Massey-Harris, Pacemaker
- Massey-Harris
- Liquid-cooled vertical I-head
- Gasoline
- 4-cylinder
| Rated RPM | 1200 |
|---|---|
| Displacement | 247.7 ci [4.1 L] |
| Displacement(optional) | 1400 |
| Bore/Stroke | 3.875x5.25 inches [98 x 133 mm] |
| Coolant capacity | 20 qts [18.9 L] |
Twin Power option
Transmission Information of Massey-Harris, Pacemaker
Transmission variants 1
| Type | Gear |
|---|---|
| Gears | 4 forward and 1 reverse |
| Clutch | Mechanical dry disc |
Mechanical Specs of Massey-Harris, Pacemaker
- Two-wheel drive
- Manual steering
- Open operator station.
Power Information of Massey-Harris, Pacemaker
- Https://www.tractordata.com/farm-tractors/003/8/8/3883-massey-harris-pacemaker-tests.html
Where it sits
With 30 hp[B] HP, the Massey-Harris Pacemaker sits between 102 Junior (29 HP) and 21 Colt (31 HP) in Massey-Harris's range. Its power puts it in the 40th percentile of 1930s models in our database (235 machines).
Frequently asked questions
How much horsepower does the Massey-Harris Pacemaker have?
The Massey-Harris Pacemaker delivers 30 hp[B] HP.
What years was the Massey-Harris Pacemaker produced?
The Massey-Harris Pacemaker was produced in 1936-1939.
What engine does the Massey-Harris Pacemaker have?
The Massey-Harris Pacemaker is powered by a Gasoline, 4-cylinder engine.
What transmission does the Massey-Harris Pacemaker use?
The Massey-Harris Pacemaker uses a Gear transmission.
How much does the Massey-Harris Pacemaker weigh?
The Massey-Harris Pacemaker weighs 3700 lbs [1678 kg].
Is the Massey-Harris Pacemaker 4WD?
The Massey-Harris Pacemaker is available in 2WD.