David Brown 770 Selematic or Renault 421 M?
Which should you choose?
On performance, every comparable figure that differs favours the Renault 421 M: hydraulic flow.
- The Renault 421 M suits loader and hydraulic implement work better on this data: 27% (5.5 L/min / 1.5 gpm) more hydraulic flow.
Generated by rule set compare@4 from the figures on the side-by-side table, allowed by route “the same stated configuration”. Measured figures are compared only with measured, claimed only with claimed, at the same test condition; differences within each figure’s tolerance are not called.
What decides it, question by question?
| Question | 770 Selematic | 421 M | Call |
|---|---|---|---|
| Which puts more power through the PTO shaft? | 24.1 kW (32.3 hp)Traktorenlexikon, “David Brown 770” | 24.2 kW (32.5 hp)Traktorenlexikon, “Renault 421 M / R 7421” | EvenEven on power at the PTO shaft (both power at the PTO, claimed): the difference is under the 10% threshold for claimed figures, too small to call. |
| Which turns a litre of fuel into more work at the shaft? | — | — | No figureNo call on fuel efficiency at the shaft: no figure on record for the 770 Selematic and the 421 M. |
| Which pulls harder at the drawbar? | — | — | No figureNo call on drawbar power: no figure on record for the 770 Selematic and the 421 M. |
| Which pumps more oil for implements? | 20.4 L/min (5.4 gpm)Traktorenlexikon, “David Brown 770” | 25.9 L/min (6.8 gpm)Traktorenlexikon, “Renault 421 M / R 7421” | AheadThe Renault 421 M has 27% more hydraulic flow (5.5 L/min / 1.5 gpm) than the David Brown 770 Selematic (both pump flow, as stated by the source). |
| Which lifts more on the three-point hitch? | 725 kg (1,598 lb)Traktorenlexikon, “David Brown 770” | — | No figureNo call on three-point lift: no figure on record for the 421 M. |
| Which is heavier, for traction? | 1,464 kg (3,228 lb)Traktorenlexikon, “David Brown 770” | 1,995 kg (4,398 lb)Traktorenlexikon, “Renault 421 M / R 7421” | Ahead (a fact, not an advantage)The Renault 421 M is 36% heavier (531 kg / 1,171 lb) than the David Brown 770 Selematic (both unladen weight, as stated by the source). |
| Which may carry more ballast and load? | — | — | No figureNo call on maximum permissible mass: no figure on record for the 770 Selematic and the 421 M. |
| Which has the wider choice of gears? | 12Traktorenlexikon, “David Brown 770” | 10Traktorenlexikon, “Renault 421 M / R 7421” | EvenEven on forward gears (both forward gears, as stated by the source): the difference is under the 25% threshold, too small to call. |
| Which offers a creeper range? | — | YesTraktorenlexikon, “Renault 421 M / R 7421” | No figureNo call on a creeper range: not stated for the 770 Selematic. |
| Which is faster on the road? | 25 km/h (15.5 mph)Traktorenlexikon, “David Brown 770” | 25 km/h (15.5 mph)Traktorenlexikon, “Renault 421 M / R 7421” | EvenEven on top speed (both top speed forward, as stated by the source): the difference is under the 10% threshold, too small to call. |
| Which offers more PTO speeds? | 540 rpmTraktorenlexikon, “David Brown 770” | 540 rpmTraktorenlexikon, “Renault 421 M / R 7421” | EvenEven on PTO speeds: the same speeds (540 rpm). |
| Which PTO runs independently of the ground drive? | — | independentTraktorenlexikon, “Renault 421 M / R 7421” | No figureNo call on PTO independence: not stated for the 770 Selematic. |
| Which drives on both axles? | 2WDTraktorenlexikon, “David Brown 770” | 2WDTraktorenlexikon, “Renault 421 M / R 7421” | EvenEven on drive: all two-wheel drive. |
| Which is newer, and what about parts? | 1965–1970 | 1977–1985 | Ahead (a fact, not an advantage)The Renault 421 M is newer: production began 12 years later. We hold no parts-availability data, so there is no call on parts. |
What does this mean in plain words?
- The Renault 421 M has 27% more hydraulic flow (5.5 L/min / 1.5 gpm) than the David Brown 770 Selematic (both pump flow, as stated by the source).
- The Renault 421 M is 36% heavier (531 kg / 1,171 lb) than the David Brown 770 Selematic (both unladen weight, as stated by the source).
- The Renault 421 M is newer: production began 12 years later. We hold no parts-availability data, so there is no call on parts.
- Even on power at the PTO shaft (both power at the PTO, claimed): the difference is under the 10% threshold for claimed figures, too small to call.
- Even on forward gears (both forward gears, as stated by the source): the difference is under the 25% threshold, too small to call.
- Even on top speed (both top speed forward, as stated by the source): the difference is under the 10% threshold, too small to call.
- Even on PTO speeds: the same speeds (540 rpm).
- Even on drive: all two-wheel drive.
- No figure on record for every machine, so no call on: fuel efficiency at the shaft, drawbar power, three-point lift, maximum permissible mass, a creeper range and PTO independence.
← Every figure for both machines, side by side, with sources