The Allis Chalmers Model B tractor was a beast of a machine, with a robust powertrain that made it a joy to work with. It produced 18 horsepower from its 4-cylinder engine.
One of the standout features of the Model B was its efficiency. With a top speed of 5 miles per hour, it was perfect for smaller farms or homesteads where precision and control were key.
The Model B's engine was also incredibly reliable, with many owners reporting thousands of hours of trouble-free use.
Key Features
The Allis Chalmers Model B tractor was a game-changer for farmers in its time. Its high-clearance design made it perfect for truck farming, allowing farmers to work in tight spaces.
The Model B's adjustable front axle was a feature that set it apart from other tractors. For $20 extra, farmers could get an adjustable front axle with 10 spacing increments, ranging from 38 to 60 inches.
This high-clearance design was not only practical but also attracted foreign sales, making the Model B one of the first truly international tractor models made.
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High Clearance Opportunity
The Allis-Chalmers Model B was designed with high-clearance in mind, making it a popular choice for farmers who needed to navigate rough terrain.
Farmers could set the front axle for a 43- or 50-inch tread, or opt for an adjustable front axle with 10 spacing increments for $20 extra.
This high-clearance feature was especially useful for truck farmers, who needed to traverse uneven terrain with ease.
The arched front axle and high rear-axle clearance also made the Model B a hit with farmers who worked in areas with frequent flooding or waterlogged soil.
The Model B's high-clearance design even attracted foreign sales, with the tractor being shipped to countries in Europe, Africa, Australia, and South America.
High Power-to-Weight Ratio
The B's high power-to-weight ratio was a major selling point, and for good reason - it was given a high-torque engine that turned out 15½ belt hp.
This power plant was later replaced with an Allis-Chalmers-built 116- and then 125-cubic-inch power plant, which turned out 22¼ hp at the Nebraska Tractor Test in 1943.
That's a significant increase in power, and it's impressive considering the B's weight of just 2,000 pounds.
Maintenance and Repair
The Allis Chalmers Model B tractor is a reliable workhorse that requires regular maintenance to keep it running smoothly.
The Model B has a 2-cylinder engine that produces 20 horsepower, making it a great choice for small farms and gardens.
You should check the oil level regularly, as the engine oil reservoir is located on the right side of the engine.
The Model B has a 2-speed transmission that allows you to switch between high and low gear, making it easy to manage different terrain.
It's essential to keep the air filter clean, as a dirty air filter can reduce engine performance.
The Model B has a 4-cylinder hydraulic system that provides power for the hydraulic lift and other attachments.
Regularly checking the hydraulic fluid level and condition can help prevent system failures.
The Model B has a 2-plow hydraulic system that allows you to attach a plow or other implements to the tractor.
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You should also check the tires regularly, as proper inflation and tread depth are crucial for safe operation.
The Model B has a maximum speed of 5.5 mph in high gear, making it a great choice for slow-moving applications.
It's also important to keep the battery terminals clean and free of corrosion to ensure reliable starting.
Frequently Asked Questions
How much does a 1947 Allis-Chalmers B weight?
The 1947 Allis-Chalmers B tractor weighs approximately 2,085 pounds.
Sources
- https://en.wikipedia.org/wiki/Allis-Chalmers_Model_B
- https://livinghistoryfarm.org/farming-in-the-1940s/machines/allis-chalmers-tractors/
- https://www.agriculture.com/model-b-the-small-farm-champion
- https://www.gasenginemagazine.com/tractors/allis-chalmers-model-b/
- http://www.squidsfabshop.com/Allis/ACBeng.html
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