David Brown SUPER CROPMASTER
Built: 10/1950–12/1952 · Series: VAK 3-Baureihe
More machines from model year 1950
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David Brown Super Cropmaster (1950-1952) from Meltham, Yorkshire: water-cooled four-cylinder of 2,707 cc for kerosene or petrol, 35.5 hp/26.1 kW at 2,000 rpm, top speed 30 km/h, weight 1,727 kg
David Brown was a British tractor manufacturer based in Meltham, near Huddersfield in Yorkshire. The Super Cropmaster was built from October 1950 to December 1952 and belonged to the VAK-3 series; the K in the designation stands for kerosene operation, as confirmed by the given fuel type of kerosene/petrol. The Cropmaster name denoted the maker's general-purpose tractor for mixed arable farming.
Read on 3 more paragraphs
The water-cooled four-cylinder engine has a displacement of 2,707 cc and produces 26.1 kW (35.5 hp) at 2,000 rpm. The Super Cropmaster is 2,991 mm long, 1,626 mm wide and 1,543 mm high, with a wheelbase of 1,892 mm and a weight of 1,727 kg. Its top speed is 30 km/h.
As a kerosene/petrol engine, the Super Cropmaster works with spark ignition rather than compression ignition: it starts on petrol using spark plugs and magneto ignition, then switches to the cheaper kerosene once warm, which required an extra carburettor with a change-over valve. At just over 26 kW, it sat in the mid power class of tractors of its time, built for ploughing, sowing and harvest work in general arable farming.
When buying a used example of such a spark-ignition engine, check the ignition system, spark plugs and magneto, the carburettor with its fuel change-over, and the condition of the radiator and water pump. Beyond that, check the clutch, gearbox and PTO clutch together with the belt pulley often fitted in addition on tractors of this period, as well as rust on wings and sheet metal. Spare parts are supplied by specialist dealers in classic David Brown tractors.
Sources: SpecCodex-Register: Kennwerte des Modells David Brown Super Cropmaster
Technical data
Engine
| Fuel | Kerosin/Benzincorrect |
|---|---|
| Power | 35.5 hp (26.1 kW)correct |
| Rated speed | 2,000 rpmcorrect |
| Cylinders | 4correct |
| Displacement | 2,707 cm³correct |
| Bore | 92.1 mmcorrect |
| Stroke | 101.6 mmcorrect |
| Cooling | water-cooledcorrect |
Dimensions and weights
| Length | 2,991 mmcorrect |
|---|---|
| Width | 1,626 mmcorrect |
| Height | 1,543 mmcorrect |
| Wheelbase | 1,892 mmcorrect |
| Ground clearance | 406 mmcorrect |
| Unladen weight | 1,727 kgcorrect |
Drivetrain and chassis
| Drive | rear-wheel drivecorrect |
|---|---|
| Gearbox | 6 V/2 Rcorrect |
| Gears | 8correct |
| Forward gears | 6correct |
| Reverse gears | 2correct |
| Front tyres | 6.00-19 ASFcorrect |
| Rear tyres | 11-28 AScorrect |
| Top speed | 30 km/hcorrect |
Working data
| Fuel tank capacity | 45.5 lcorrect |
|---|
Origin and approval
| Construction | frame constructioncorrect |
|---|---|
| Units built | 4,880correct |
Where this model stands
Power-to-weight ratio: 15.1 kW/t (26 kW / 1.7 t)
Power class: Compact (< 40 hp)
Stronger than 22% 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 David Brown SUPER CROPMASTER have?
The David Brown SUPER CROPMASTER delivers 35.5 hp.
How much does the David Brown SUPER CROPMASTER weigh?
The unladen weight is 1,727 kg.
What engine does the David Brown SUPER CROPMASTER have?
4 cylinders, 2,707 cm³ displacement, Kerosin/Benzin.
How fast does the David Brown SUPER CROPMASTER go?
Top speed is 30 km/h.
What are the dimensions of the David Brown SUPER CROPMASTER?
2,991 mm × 1,626 mm × 1,543 mm.
When was the David Brown SUPER CROPMASTER built?
Production years: 10/1950–12/1952.
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.
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This page carries 27 individual figures for this model. They come from 2 recorded sources; every figure can be traced there. What we cannot document is not here — we leave gaps open rather than estimate them.
The technical data on this page comes from official vehicle registration records (RDW/Traficom), not from the manufacturer.
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Tractor in 3D section
Turn the model, look inside and click an assembly — each one is explained.
