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David Brown 50TD vs David Brown 990 Selectamatic

Verdict: David Brown 50TD vs David Brown 990 Selectamatic

The David Brown 50TD and the David Brown 990 Selectamatic are both tractors — here is how they stack up on the figures that matter. David Brown 990 Selectamatic leads on rated power with 55 hp against 50 hp. David Brown 990 Selectamatic is the lighter machine (4,235 kg vs 10,450 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. David Brown 50TD holds more fuel (65.9 L vs 60.9 L) for longer stints between fills. David Brown 990 Selectamatic is the newer design (1961 vs 1953). In short: choose the David Brown 990 Selectamatic for outright pulling power, or the David Brown 50TD if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a demo.

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Fit & specs
David Brown 50TD Tractor
David Brown
62
Fit score
Best match
Clear
David Brown 990 Selectamatic Tractor
David Brown
62
Fit score
Best match
Clear
Rated power
50 hp
55 hp
Confidence
40%
40%
Guide price
Overview
Manufacturer
David BrownReference
David BrownReference
liquid-cooledReference
With 12.4/11-36 rear tires.Reference
Drive
crawlerReference
Differential lock
mechanical rearReference
Steering
hydrostatic powerReference
Engine
Fuel tank
65.9 LReference
60.9 LReference
Engine
37.3 kWReference
Belt (claimed)
33.3 kWReference
Displacement
4.1 LReference
3.2 LReference
Bore/Stroke
92 x 102 mmReference
100 x 102 mmReference
Power
37.3 kWReference
Rated RPM
1800Reference
2200Reference
Starter
electricReference
electricReference
Starter volts
12Reference
12Reference
Oil capacity
54.0 LReference
23.0 LReference
Coolant capacity
18.0 LReference
14.0 LReference
Engine (gross)
41.0 kWReference
Drawbar (claimed)
3.0 kWReference
Plows
4Reference
Drawbar (tested)
32.3 kWReference
Power (gross)
41.0 kWReference
Air cleaner
oil bathReference
Compression
17:1Reference
Idle RPM
700-2200Reference
Torque
189.8 NmReference
Torque RPM
1400Reference
Power at rated engine speed
38.8 kWReference
Max power
32.3 kWReference
Transmission
Type
gearReference
partially synchronizedReference
Gears
6 forward and 2 reverseReference
12 forward and 4 reverseReference
Clutch
304.8mm dry discReference
dry discReference
PTO & Hydraulics
Rear PTO Type
540 (1.375)Reference
540/1000 (1.375)Reference
Engine RPM
2100@1600Reference
1000@2000Reference
PTO (claimed)
39.4 kWReference
PTO (tested)
38.8 kWReference
Pressure
137.9 barReference
Pump flow
27.3 lpmReference
Rear Type
II/IReference
Control
position and draft controlReference
Rear lift (at ends)
907 kgReference
Rear PTO
liveReference
Power at rated PTO speed
37.0 kWReference
Dimensions
Weight
10450 to 10500 poundsReference
4235 to 5795 poundsReference
Length
307 cmReference
Height (hood)
142 cmReference
48 Operating weight
4740 kgReference
56 Operating weight
4762 kgReference
Gauge
162 cmReference
2WD Wheelbase
200 cmReference
4WD Wheelbase
195 cmReference
Front tire
6.00-19Reference
2WD Rear tire
12.4-36Reference
2WD Standard tires (ag)
Front: 6.00-19. Rear: 12.4-36Reference
4WD Standard tires (ag)
Front: 9.5-24. Rear: 12.4-36Reference
2WD Length
320 cmReference
4WD Length
322 cmReference
2WD Clearance (front axle)
54 cmReference
4WD Clearance (front axle)
33 cmReference
2WD Clearance (drawbar)
38 cmReference
4WD Clearance (drawbar)
37 cmReference
2WD
2313 kgReference
4WD
2628 kgReference
2WD Shipping
1920 kgReference
Steering wheel
167 cmReference
David Brown 50TD Tracks
Width
45 cmReference
162 cmReference
990 Serial Numbers
1961
440001Reference
1962
441323Reference
1963
450376Reference
1964
460376Reference
1965
472273Reference
1966
483768Reference
1967
496283Reference
1968
504690Reference
1969
808150Reference
1970
818301Reference
1971
826009Reference
1972
850600Reference
1973
854403Reference
1974
859367Reference
1975
863900Reference
1976
11070001Reference
1977
11080236Reference
1978
11089141Reference
1979
11096828Reference
1980
11104577Reference
Location:
Serial number on the right side of the tractor frame.Reference
Electrical
Charging system
generatorReference
Battery volts
12Reference
Battery AH
96Reference
Capacities
2WD Max capacity
2862 kgReference
4WD Max capacity
2628 kgReference
David Brown 990 Height
ROPS
241 cmReference
Exhaust
226 cmReference
Test results
Fuel use
11.7 l/hourReference
Max pull
3239 kgReference
Speeds

Fit score weighs budget, operation size, crop match and data confidence against the details above. It’s guidance, not advice — always confirm with a dealer demo.

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