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David Brown 30 C/D

Built: 03/1953 (D: 04/1953)–01/1957 · Series: CROPMASTER-Baureihe

More machines from model year 1953

Source: https://www.kleinanzeigen.de/s-anzeige/traktor-david-brown/3

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The CROPMASTER series from David Brown includes the 30 C/D. Production: 03/1953 (D: 04/1953)–01/1957. The engine delivers 41.6 hp (30.6 kW), has 4 cylinders, with a displacement of 2,707 cm³. The machine is 2,931 mm long, 1,619 mm wide and 1,403 mm high. The unladen weight is 1,743 kg. The wheelbase measures 1,895 mm. Ground clearance is 406 mm. Top speed is 30 km/h. The tank holds 45.5 litres. Transmission: 6 V/2 R. The engine is water-cooled. Tyres: front 6.00-19 ASF, rear 11-28 AS. The fuel is Benzin/Kerosin/Diesel. The bore measures 92.1 mm. The stroke is 101.6 mm. Construction: frame construction. The gearbox offers 6 forward gears. There are also 2 reverse gears. Around 4.323 (D: 11.748) units were built. Rated output across the David Brown range ranges from 12.2 to 108 hp; the 30 C/D sits in the lower part of that range with 41.6 hp. Its immediate neighbours are the 900 below it with 40.6 hp and the 3800 SELECTMATIC above it with 42.6 hp. Rated output across the David Brown range ranges from 9 to 79.4 kW; here the 30 C/D sits in the lower part of that range with 30.6 kW. 147 David Brown models across 19 series are on record.

David Brown Cropmaster 25 C/D and 30 C/D – tractors from Meltham near Huddersfield, 1947 to 1953: four-cylinder engines of 27.9 to 30.6 kW, multi-fuel operation, 1,473 to 1,743 kg

David Brown built the Cropmaster between 1947 and 1953 at the Meltham works near Huddersfield in England; the register lists here the 25 C/D and 30 C/D types. The Cropmaster was one of the first British post-war tractors with an enclosed bonnet and streamlined bodywork and was offered with both petrol-paraffin and diesel engines, making it a flexible choice for farms during the post-war transition period.

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The register lists here 2 versions with 27.9 to 30.6 kW from four-cylinder engines of 2,523 to 2,707 cm³ displacement, weights from 1,473 to 1,743 kg, lengths from 2,870 to 2,931 mm, widths from 1,492 to 1,619 mm, heights from 1,372 to 1,403 mm and rated speeds from 1,800 to 2,300 rpm.

With its modern design and fuel flexibility, the Cropmaster shaped British post-war farm machinery and competed with Ferguson and the Fordson tractors; David Brown also exported the type widely, including to Australia and other Commonwealth countries.

Buying one of these classic post-war tractors used, the condition and tightness of the engine matter, and on the multi-fuel versions particularly the condition of the carburettor and vaporiser, along with rust on the enclosed bonnet and bodywork. Spare parts are available through specialist vintage-tractor dealers and clubs for historic David Brown machines.

Sources: SpecCodex register, model data: David Brown Cropmaster-Baureihe

Technical data

Engine

Fuel	Benzin/Kerosin/Dieselcorrect
Power	41.6 hp (30.6 kW)correct
Rated speed	2.300/1.800 rpmcorrect
Cylinders	4correct
Displacement	2,707 cm³correct
Bore	92.1 mmcorrect
Stroke	101.6 mmcorrect
Cooling	water-cooledcorrect

Dimensions and weights

Length	2,931 mmcorrect
Width	1,619 mmcorrect
Height	1,403 mmcorrect
Wheelbase	1,895 mmcorrect
Ground clearance	406 mmcorrect
Unladen weight	1,743 kgcorrect

Drivetrain and chassis

Drive	rear-wheel drivecorrect
Gearbox	6 V/2 Rcorrect
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	4.323 (D: 11.748)correct

Where this model stands

Power-to-weight ratio: 17.6 kW/t (31 kW / 1.7 t)

Power class: Universal (40–100 hp)

Stronger than 27% 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 30 C/D have?

The David Brown 30 C/D delivers 41.6 hp.

How much does the David Brown 30 C/D weigh?

The unladen weight is 1,743 kg.

What engine does the David Brown 30 C/D have?

4 cylinders, 2,707 cm³ displacement, Benzin/Kerosin/Diesel.

How fast does the David Brown 30 C/D go?

Top speed is 30 km/h.

What are the dimensions of the David Brown 30 C/D?

2,931 mm × 1,619 mm × 1,403 mm.

When was the David Brown 30 C/D built?

Production years: 03/1953 (D: 04/1953)–01/1957.

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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