Hanomag Robust 901 A (S) vs Renault 921-4

13 material differences

Tractor one

1969–1970

No measured PTO figure

Tractor two

1977–1980

No measured PTO figure

Which should you choose?

Read our verdict on the Robust 901 A (S) and the 921-4 → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.

13 material differences · 3 fields identical or within 5%, which is not counted as material

Hanomag Robust 901 A (S) and Renault 921-4, field by field
Field	Robust 901 A (S)	921-4	Gap
Engine
Engine power, claimed claimed	91 hp	90.8 hp	—
Engine declared	Hanomag D162 R2	MWM D 227-6	differs
Displacement declared	4.71 L	5.66 L	+20% 921-4
Maximum torque declared	207 lb·ft · 281 N·m	249 lb·ft · 337 N·m	+20% 921-4
Transmission
Top speed declared	12.3–16.9 mph · 19.87–27.15 km/h	15.5 mph · 25 km/h	differs
Clutch declared	Double clutch for transmission and PTO	Dry LuK double clutch type 310/310 G	differs
Hydraulics & hitch
Pump flow declared	8.5 gpm · 32 L/min	8.6 gpm · 32.6 L/min	—
Pressure declared	—	2,321 psi · 160 bar	—
Three-point lift at ends declared	—	10,119 lb · 4,590 kg	—
Rear PTO speeds declared	540/1000 rpm	540/1000 rpm	—
Weight & dimensions
Unladen weight declared	8,223–8,885 lb · 3,730–4,030 kg	10,847 lb · 4,920 kg	differs
Maximum permissible mass declared	—	17,637 lb · 8,000 kg	—
Wheelbase declared	97.4–98.8 in · 2,475–2,510 mm	105.6 in · 2,683 mm	differs
Length declared	157.1 in · 3,990 mm	174.9 in · 4,442 mm	+11% 921-4
Width declared	79.3–84.6 in · 2,015–2,150 mm	77.2 in · 1,960 mm	differs
Height declared	75.2 in · 1,910 mm	108.9 in · 2,765 mm	+45% 921-4
Ground clearance declared	12.6 in · 320 mm	16.9 in · 430 mm	+34% 921-4
Turning radius, braked declared	13.5 ft · 4.10 m	15.6 ft · 4.75 m	+16% 921-4
Fuel tank declared	132.1 qt · 125 L	216.6 qt · 205.0 L	+64% 921-4

Source

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