David Brown 770 Selematic vs Renault R-57

9 material differences · fewer than 12

Tractor one

1965–1970

No measured PTO figure

Tractor two

1967–1972

No measured PTO figure

Which should you choose?

Read our verdict on the 770 Selematic and the R-57 → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.

9 material differences · 7 fields identical or within 5%, which is not counted as material

David Brown 770 Selematic and Renault R-57, field by field
Field	770 Selematic	R-57	Gap
Engine
Engine power, claimed claimed	33.0 hp	42.4 hp	+28% R-57
Engine declared	DAVID BROWN AD 3/49 A (B)	ALFA-SAVIEM 714/30.01	differs
Displacement declared	2.39 L	2.49 L	—
Maximum torque declared	101 lb·ft · 137 N·m	109 lb·ft · 148 N·m	+8% R-57
Transmission
Top speed declared	15.5 mph · 25 km/h	15.5 mph · 25 km/h	—
Clutch declared	Pedal-operated dry Borg & Beck single-plate clutch	Two-stage pedal-operated dry FERODO double clutch	differs
Hydraulics & hitch
Pump flow declared	5.4 gpm · 20.4 L/min	5.6 gpm · 21.2 L/min	—
Three-point lift at ends declared	1,598 lb · 725 kg	4,409 lb · 2,000 kg	+176% R-57
Rear PTO speeds declared	540 rpm	540 rpm	—
Weight & dimensions
Unladen weight declared	3,228 lb · 1,464 kg	4,101 lb · 1,860 kg	+27% R-57
Wheelbase declared	75.0 in · 1,905 mm	76.0 in · 1,930 mm	—
Length declared	112.5 in · 2,858 mm	128.0 in · 3,250 mm	+14% R-57
Width declared	64.6 in · 1,641 mm	59.1 in · 1,500 mm	+9% 770 Selematic
Height declared	48.0 in · 1,219 mm	61.4 in · 1,560 mm	+28% R-57
Ground clearance declared	16.5 in · 419 mm	16.5 in · 420 mm	—
Turning radius, braked declared	10.1 ft · 3.07 m	9.8 ft · 2.98 m	—
Fuel tank declared	38.5 qt · 36.4 L	58.1 qt · 55.0 L	+51% R-57

Source

Source