David Brown 780 Selectamatic
Built: 1967-1971 · Series: Other models
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The David Brown 780 Selectamatic is a tractor built in 1967-1971. It is powered by a three-cylinder engine producing 34 kW.
Power is transmitted through a Selectamatic gearbox, drive type: 2-WD.
It runs on diesel. As standard, it runs on 6.00-16 tyres at the front and 12.4/11-28 at the rear. The predecessor was the David Brown 770. Within the range, rated power spans from 10.6 to 50 kW; with 34 kW, the 780 Selectamatic sits in the mid-field. Directly alongside are the 880 AS-SELECTAMATIC/2030 with 33.8 kW below and the 990AS-SELECTAMATIC/2000 with 40.2 kW above.
Technical data
Engine
| Engine make | David Browncorrect |
|---|---|
| Fuel | dieselcorrect |
| Power | 46 hp (34 kW)correct |
| Cylinders | 3correct |
| Naturally aspirated | naturally aspiratedcorrect |
Dimensions and weights
| Length | 112 inches (2850 mm)correct |
|---|---|
| Width | 64 inches (1620 mm)correct |
| Height | 83 inches (2090 mm) (exhaust)correct |
| Wheelbase | 76 inches (1920 mm)correct |
| Turning circle | 11' (3350 mm)correct |
| Unladen weight | 3450 lbs (1575 kgcorrect |
Drivetrain and chassis
| Drive | rear-wheel drivecorrect |
|---|---|
| Gearbox | Selectamaticcorrect |
| Gearbox make | David Browncorrect |
| Forward gears | 6 or 12correct |
| Reverse gears | 2 or 4correct |
| Clutch | Twin Dry plate (live drive)correct |
| Front tyres | 6.00-16correct |
| Rear tyres | 12.4/11-28correct |
Working data
| Lifting capacity | 1600 lb (750 kg)correct |
|---|---|
| Fuel tank capacity | 9.5 gal (us) (36 litre)correct |
| Linkage category | Cat Icorrect |
Origin and approval
| Plant | Meltham, West Yorkshire, Englandcorrect |
|---|---|
| Predecessor | David Brown 770correct |
Frequently asked questions
How much power does the David Brown 780 Selectamatic have?
The David Brown 780 Selectamatic delivers 46 hp.
What engine does the David Brown 780 Selectamatic have?
3 cylinders, Diesel.
When was the David Brown 780 Selectamatic built?
Production years: 1967-1971.
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 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.
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