David Brown 770 SELEMATIC
Built: 01/1965–1970 · Series: SELEMATIC-Baureihe
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David Brown 770 Selematic (1965-1970) from Meltham, Yorkshire: low-built three-cylinder diesel of 2,394 cc, 33.5 hp/24.6 kW at 2,000 rpm, only 1,219 mm high, weight 1,464 kg
David Brown was a British tractor manufacturer based in Meltham, near Huddersfield in Yorkshire. The 770 Selematic was built from January 1965 to 1970. Unlike the four-cylinder models in the range, it carries a compact three-cylinder engine, which placed it in a smaller power class among the models then on offer.
Read on 3 more paragraphs
The three-cylinder diesel engine with water circulation cooling has a displacement of 2,394 cc and produces 24.6 kW (33.5 hp) at 2,000 rpm, with 137 Nm of torque. Notable is its height of only 1,219 mm, with a length of 2,858 mm, a width of 1,641 mm and a wheelbase of 1,905 mm; it weighs 1,464 kg. Its top speed is 25 km/h.
A height of around 1.2 metres is unusually low for an agricultural tractor and points to a design for work under low-growing crops, in glasshouses or in orchards, where a tall standard tractor would not fit. The three-cylinder engine of nearly 2.4 litres provided enough pulling power for this at a low kerb weight and with good manoeuvrability.
When buying a used example of such a low-built tractor, besides the clutch, gearbox and hydraulic tightness, check in particular the condition of the water circulation cooling, which works without a separate pump and depends on an adequate coolant level, as well as the steering head and front axle bearings, which are under greater load in this low, compact design. Parts for the engine and chassis are supplied by specialist dealers in classic David Brown tractors.
Sources: SpecCodex-Register: Kennwerte des Modells David Brown 770 Selematic
Technical data
Engine
| Fuel | dieselcorrect |
|---|---|
| Power | 33.5 hp (24.6 kW)correct |
| Rated speed | 2,000 rpmcorrect |
| Torque | 137 Nmcorrect |
| Speed at max. torque | 1,200 rpmcorrect |
| Cylinders | 3correct |
| Displacement | 2,394 cm³correct |
| Bore | 100.1 mmcorrect |
| Stroke | 101.6 mmcorrect |
| Compression ratio | 17correct |
| Cooling | water-cooledcorrect |
Dimensions and weights
| Length | 2,858 mmcorrect |
|---|---|
| Width | 1,641 mmcorrect |
| Height | 1,219 mmcorrect |
| Wheelbase | 1,905 mmcorrect |
| Ground clearance | 419 mmcorrect |
| Unladen weight | 1,464 kgcorrect |
Drivetrain and chassis
| Drive | rear-wheel drivecorrect |
|---|---|
| Gearbox | 12 V/4 Rcorrect |
| Front tyres | 5.50-16 ASFcorrect |
| Rear tyres | 11.2-28 AScorrect |
| Top speed | 25 km/hcorrect |
Origin and approval
| Construction | frame constructioncorrect |
|---|---|
| Units built | 12,205correct |
Where this model stands
Power-to-weight ratio: 16.8 kW/t (25 kW / 1.5 t)
Power class: Compact (< 40 hp)
Stronger than 19% 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 770 SELEMATIC have?
The David Brown 770 SELEMATIC delivers 33.5 hp.
How much does the David Brown 770 SELEMATIC weigh?
The unladen weight is 1,464 kg.
What engine does the David Brown 770 SELEMATIC have?
3 cylinders, 2,394 cm³ displacement, Diesel.
How fast does the David Brown 770 SELEMATIC go?
Top speed is 25 km/h.
What are the dimensions of the David Brown 770 SELEMATIC?
2,858 mm × 1,641 mm × 1,219 mm.
When was the David Brown 770 SELEMATIC built?
Production years: 01/1965–1970.
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 25 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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Sources: [1]
Tractor in 3D section
Turn the model, look inside and click an assembly — each one is explained.