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Tractor · 1960Unverified

David Brown 850

Name: David Brown 850
Brand: David Brown

David Brown 850 — Utility tractor · 34 hp. Reference specifications; pending source verification.

The David Brown 850 tractor model has a rated output of 34 hp, making it a relatively compact option in its class. Manufactured from 1960 to 1965, it features a 4-cylinder diesel liquid-cooled engine driving through two-wheel drive with a 6-speed gearbox. The listed weight of the vehicle is between 3750 and 4179 pounds, and it is suitable for tasks covering approximately 200 acres.

Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.

Rated power

34 hp

Max power

23.1 kW

Weight

3750 to 4179 pounds

Catalogue coverage

Variants represented

Richest spec table

79 rows

Recorded power

34 hp

Transmissions

6-speed unsynchronized gear

Production years

1960-1965

Verified variants

No linked source document is currently displayed; verify critical figures with the manufacturer or dealer.

Hover a source tag to verify

Overview

ManufacturerDavid BrownReference

Utility tractorReference

Built in Meltham Mills, Huddersfield, EnglandReference

Two-wheel driveReference

Final drivesspur gearReference

Manual steeringReference

Differential mechanical expanding shoe brakesReference

Open operator station.Reference

Engine

David Brown 2.5L 4-cyl dieselReference

David Brown 2.5L 4-cyl gasolineReference

Fuel tank40.1 LReference

Engine26.1 kWReference

Drawbar (claimed)22.4 kWReference

Drawbar (tested)23.1 kWReference

David BrownReference

dieselReference

4-cylinderReference

liquid-cooledReference

Displacement2.5 LReference

Bore/Stroke89 x 102 mmReference

Power26.1 kWReference

Fuel systemdirect injectionReference

Air cleaneroil bathReference

Compression17:1Reference

Rated RPM2000Reference

Idle RPM700-2000Reference

Starter volts12Reference

Oil capacity9.6 LReference

Coolant capacity13.6 LReference

gasolineReference

Compression6.25:1Reference

Power at rated engine speed25.0 kWReference

Max power23.1 kWReference

Power at rated engine speed23.9 kWReference

Max power20.6 kWReference

Transmission

6-speed unsynchronized gearReference

Typeunsynchronized gearReference

Gears6 forward and 2 reverseReference

Clutchdry discReference

Three gears (1-3) plus reverse (R) in two ranges (low and high).Reference

PTO & Hydraulics

PTO (claimed)24.6 kWReference

PTO (tested)25.0 kWReference

Rear TypeIReference

Rear PTOtransmissionReference

Rear PTOliveReference

Clutchdry discReference

Rear PTO Type540/1000 (1.375)Reference

Engine RPM540@1800Reference

Engine RPM540@1100Reference

Engine RPM1000@2000Reference

Power at rated PTO speed21.1 kWReference

Power at rated PTO speed21.3 kWReference

Dimensions

Wheelbase191 cmReference

Weight3750 to 4179 poundsReference

Front tire5.00-15Reference

Rear tire10-28Reference

Ag front5.00-15Reference

Ag rear10-28Reference

Length288 cmReference

Height (hood)131 cmReference

Front tread132/142/152/162/172/182 cmReference

Rear tread132/142/152/162/172/182 cmReference

Shipping1701 kgReference

Gas Operating1857 kgReference

Diesel Operating1895 kgReference

Ballasted2664 kgReference

Test results

NTTL 734: diesel 6-speed 2WDReference

NTTL 735: gasoline 6-speed 2WDReference

Diesel 6-speed 2WDMarch 12 - 26, 1960Link: Nebraska Tractor Test 734 fileReference

PTO performanceReference

Fuel use8.3 l/hourReference

Fuel use6.4 l/hourReference

Drawbar performanceReference

Fuel use8.7 l/hourReference

Gear 3 used for power test.Reference

Gasoline 6-speed 2WDMarch 14 - April 2, 1960Link: Nebraska Tractor Test 735 fileReference

Fuel use11.4 l/hourReference

Fuel use9.8 l/hourReference

Speeds

With 10-28 rear tires.Reference

Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.

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