Tractor · 1960Unverified
David Brown 850
David Brown 850 — Utility tractor · 34 hp. Reference specifications; pending source verification.
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
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.