Allis Chalmers 6-12 (1919–1926)
Built: 1919–1926 · Series: Other models
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Allis-Chalmers – Early Farm Tractors from Milwaukee, 1914–1926
In November 1914, Allis-Chalmers of Milwaukee released its first farm tractor, the 10-18: 10 drawbar horsepower, 18 belt-pulley horsepower, two large rear wheels and a single offset front wheel for furrow work. Despite solid construction, the 10-18 was a disappointment due to its high price, difficult steering under load, and a still-weak dealer network; it remained in production until about 1920.
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It was followed by the 6-12, built in the "Universal" style with two driven front wheels and a four-cylinder LeRoi engine mounted between them. From 1919 to 1926, 1,426 units were built. Listed in the register: the 10-18 and 6-12 models.
Sources: The Henry Ford – 10-18, Wikipedia – Allis-Chalmers 6-12
Technical data
Engine
| Fuel | petrolcorrect |
|---|---|
| Power | 6 hp (4.4 kW)correct |
| Rated speed | 1.000/1.200 rpmcorrect |
| Cylinders | 4correct |
| Displacement | 2,264 cm³correct |
| Bore | 79.4 mmcorrect |
| Stroke | 114.3 mmcorrect |
| Cooling | water-cooledcorrect |
Dimensions and weights
| Length | 3,962 mmcorrect |
|---|---|
| Width | 1,372 mmcorrect |
| Height | 1,829 mmcorrect |
| Unladen weight | 1,134 kgcorrect |
Drivetrain and chassis
| Drive | Frontantriebcorrect |
|---|---|
| Gearbox | 1 V/1 Rcorrect |
| Front tyres | 1.219 x 152correct |
| Rear tyres | 711 x 152correct |
| Top speed | 4 km/hcorrect |
Origin and approval
| Construction | cast-frame constructioncorrect |
|---|---|
| Units built | 1,471correct |
Where this model stands
Power-to-weight ratio: 3.9 kW/t (4 kW / 1.1 t)
Power class: Compact (< 40 hp)
Stronger than 0% of the tractors in the register — out of 15,663 models with a stated power figure.
Calculated from the documented figures above — not a rating.
Frequently asked questions
How much power does the Allis Chalmers 6-12 have?
The Allis Chalmers 6-12 delivers 6 hp.
How much does the Allis Chalmers 6-12 weigh?
The unladen weight is 1,134 kg.
What engine does the Allis Chalmers 6-12 have?
4 cylinders, 2,264 cm³ displacement, Benzin.
What are the dimensions of the Allis Chalmers 6-12?
3,962 mm × 1,372 mm × 1,829 mm.
When was the Allis Chalmers 6-12 built?
Production years: 1919–1926.
What to check before buying
- Check the hour meter against the service records — a replaced instrument is the most common gap.
- Compare the data plate and chassis number with the papers.
- Check the weights in the papers against the figures here — attachments change them.
- Check front and rear tyre sizes: mismatched pairs strain the drivetrain.
- Shift the gearbox cold and warm — jumps only show up at temperature.
- Load the hydraulics and watch for sag.
- Ask about parts availability for this build year — the running costs hang on it.
A general list for this type of machine — no substitute for an inspection or an appraiser.
We do not sell machines. We ask the dealers who carry this model and come back with price and lead time.
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This page carries 20 individual figures for this model. They come from 1 recorded source; every figure can be traced there. What we cannot document is not here — we leave gaps open rather than estimate them.
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Other models in this series
Sources: Wikibooks Traktorenlexikon (CC BY-SA 4.0) (retrieved August 2026) · How we check the data
Tractor in 3D section
Turn the model, look inside and click an assembly — each one is explained.
