David Brown 3800 Selectmatic or Porsche-Diesel Super N308?
Which should you choose?
On performance, every comparable figure that differs favours the David Brown 3800 Selectmatic: hydraulic flow. It is also ahead on top speed and PTO speeds.
- The David Brown 3800 Selectmatic suits PTO-driven implements (mowers, balers, pumps) better on this data: offers 1000 rpm.
- The David Brown 3800 Selectmatic suits loader and hydraulic implement work better on this data: 113% (17.0 L/min / 4.5 gpm) more hydraulic flow.
- The David Brown 3800 Selectmatic suits road haulage better on this data: 25% (5.0 km/h / 3.1 mph) more top speed.
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 | 3800 Selectmatic | Super N308 | Call |
|---|---|---|---|
| Which puts more power through the PTO shaft? | 26.2 kW (35.1 hp)Traktorenlexikon, “David Brown 3800” | 26.2 kW (35.1 hp)Traktorenlexikon, “Porsche-Diesel Super N308” | 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 3800 Selectmatic and the Super N308. |
| Which pulls harder at the drawbar? | — | — | No figureNo call on drawbar power: no figure on record for the 3800 Selectmatic and the Super N308. |
| Which pumps more oil for implements? | 32.0 L/min (8.5 gpm)Traktorenlexikon, “David Brown 3800” | 15 L/min (4.0 gpm)Traktorenlexikon, “Porsche-Diesel Super N308” | AheadThe David Brown 3800 Selectmatic has 113% more hydraulic flow (17.0 L/min / 4.5 gpm) than the Porsche-Diesel Super N308 (both pump flow, as stated by the source). |
| Which lifts more on the three-point hitch? | 725 kg (1,598 lb)Traktorenlexikon, “David Brown 3800” | — | No figureNo call on three-point lift: no figure on record for the Super N308. |
| Which is heavier, for traction? | 1,520 kg (3,351 lb)Traktorenlexikon, “David Brown 3800” | 1,615 kg (3,560 lb)Traktorenlexikon, “Porsche-Diesel Super N308” | EvenEven on weight (both unladen weight, as stated by the source): the difference is under the 10% threshold, too small to call. |
| Which may carry more ballast and load? | — | 2,700 kg (5,952 lb)Traktorenlexikon, “Porsche-Diesel Super N308” | No figureNo call on maximum permissible mass: no figure on record for the 3800 Selectmatic. |
| Which has the wider choice of gears? | 6 to 12Traktorenlexikon, “David Brown 3800” | 5Traktorenlexikon, “Porsche-Diesel Super N308” | 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? | — | — | No figureNo call on a creeper range: not stated for the 3800 Selectmatic and the Super N308. |
| Which is faster on the road? | 25 km/h (15.5 mph)Traktorenlexikon, “David Brown 3800” | 20 km/h (12.4 mph)Traktorenlexikon, “Porsche-Diesel Super N308” | AheadThe David Brown 3800 Selectmatic has 25% more top speed (5.0 km/h / 3.1 mph) than the Porsche-Diesel Super N308 (both top speed forward, as stated by the source). |
| Which offers more PTO speeds? | 540/1000 rpmTraktorenlexikon, “David Brown 3800” | 540 rpmTraktorenlexikon, “Porsche-Diesel Super N308” | AheadThe David Brown 3800 Selectmatic offers 1000 rpm at the PTO, which the Porsche-Diesel Super N308 does not (as stated by the sources). |
| Which PTO runs independently of the ground drive? | independentTraktorenlexikon, “David Brown 3800” | — | No figureNo call on PTO independence: not stated for the Super N308. |
| Which drives on both axles? | 2WDTraktorenlexikon, “David Brown 3800” | 2WDTraktorenlexikon, “Porsche-Diesel Super N308” | EvenEven on drive: all two-wheel drive. |
| Which is newer, and what about parts? | 1968–1971 | 1957–1960 | Ahead (a fact, not an advantage)The David Brown 3800 Selectmatic is newer: production began 11 years later. We hold no parts-availability data, so there is no call on parts. |
What does this mean in plain words?
- The David Brown 3800 Selectmatic has 113% more hydraulic flow (17.0 L/min / 4.5 gpm) than the Porsche-Diesel Super N308 (both pump flow, as stated by the source).
- The David Brown 3800 Selectmatic has 25% more top speed (5.0 km/h / 3.1 mph) than the Porsche-Diesel Super N308 (both top speed forward, as stated by the source).
- The David Brown 3800 Selectmatic offers 1000 rpm at the PTO, which the Porsche-Diesel Super N308 does not (as stated by the sources).
- The David Brown 3800 Selectmatic is newer: production began 11 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 weight (both unladen weight, as stated by the source): the difference is under the 10% threshold, 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 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