David Brown 950 (Implematic) vs J.I. Case 531

10 material differences · fewer than 12

Tractor one

1958–1962

No measured PTO figure

Tractor two

1960–1969

No measured PTO figure

Which should you choose?

Read our verdict on the 950 (Implematic) and the 531 → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.

10 material differences · 1 fields identical or within 5%, which is not counted as material

David Brown 950 (Implematic) and J.I. Case 531, field by field
Field	950 (Implematic)	531	Gap
Engine
Engine power, claimed claimed	42.5 hp	39.8 hp	+7% 950 (Implematic)
Engine declared	DAVID BROWN AK 4/40 T or AG 4/40 T	—	—
Displacement declared	2.71 L	—	—
Transmission
Top speed declared	12.4 mph · 20 km/h	12.4–21.7 mph · 20–35 km/h	differs
Clutch declared	Pedal-operated dry BORG & BECK single-plate clutch	—	—
Hydraulics & hitch
Pump flow declared	7.4 gpm · 28.0 L/min	9.3 gpm · 35.2 L/min	+26% 531
Three-point lift at ends declared	1,801 lb · 817 kg	—	—
Rear PTO speeds declared	540/1000 rpm	540 rpm	differs
Weight & dimensions
Unladen weight declared	4,189 lb · 1,900 kg	4,116 lb · 1,867 kg	—
Wheelbase declared	76.7 in · 1,948 mm	86.3 in · 2,191 mm	+12% 531
Length declared	118.0 in · 2,997 mm	130.0 in · 3,302 mm	+10% 531
Width declared	64.0 in · 1,626 mm	79.6 in · 2,022 mm	+24% 531
Height declared	54.8 in · 1,391 mm	61.0 in · 1,549 mm	+11% 531
Ground clearance declared	15.9 in · 404 mm	21.0 in · 533 mm	+32% 531
Turning radius, braked declared	10.1 ft · 3.08 m	7.9 ft · 2.41 m	+28% 950 (Implematic)
Fuel tank declared	55.2 qt · 52.2 L	69.2 qt · 65.5 L	+25% 531

Source

Source