David Brown 770 Selematic vs Renault 421

11 material differences · fewer than 12

Tractor one

David Brown 770 Selematic

1965–1970

No measured PTO figure

Tractor two

Renault 421

1972–1977

No measured PTO figure

Which should you choose?

Read our verdict on the 770 Selematic and the 421 → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.

Field by field

11 material differences · 5 fields identical or within 5%, which is not counted as material

David Brown 770 Selematic and Renault 421, field by field
Field770 Selematic421Gap
Engine
Engine power, claimed claimed33.0 hp41.4 hp+26% 421
Engine declaredDAVID BROWN AD 3/49 A (B)MWM D 327-3differs
Displacement declared2.39 L2.83 L+18% 421
Maximum torque declared101 lb·ft · 137 N·m127 lb·ft · 172 N·m+26% 421
Transmission
Top speed declared15.5 mph · 25 km/h15.5 mph · 25 km/h
Clutch declaredPedal-operated dry Borg & Beck single-plate clutchDry VERTO double clutchdiffers
Hydraulics & hitch
Pump flow declared5.4 gpm · 20.4 L/min6.8 gpm · 25.9 L/min+27% 421
Three-point lift at ends declared1,598 lb · 725 kg4,497 lb · 2,040 kg+181% 421
Rear PTO speeds declared540 rpm540 rpm
Weight & dimensions
Unladen weight declared3,228 lb · 1,464 kg4,817 lb · 2,185 kg+49% 421
Wheelbase declared75.0 in · 1,905 mm78.0 in · 1,982 mm
Length declared112.5 in · 2,858 mm130.4 in · 3,312 mm+16% 421
Width declared64.6 in · 1,641 mm66.1 in · 1,680 mm
Height declared48.0 in · 1,219 mm93.3 in · 2,370 mm+94% 421
Ground clearance declared16.5 in · 419 mm15.7 in · 400 mm
Turning radius, braked declared10.1 ft · 3.07 m10.9 ft · 3.31 m+8% 421
Fuel tank declared38.5 qt · 36.4 L50.7 qt · 48.0 L+32% 421

David Brown 770 Selematic sources

Source
  • Source: Traktorenlexikon, “David Brown 770”

Renault 421 sources

Source
  • Source: Traktorenlexikon, “Renault 421 R7431”
  • Source: Traktorenlexikon, “Renault 461 R7441”