ALLIS-CHALMERS FD-5 or IMT 555?
Which should you choose?
The data can’t decide this. Power at the PTO shaft cannot be compared: the FD-5 has only engine power (gross or net not stated), claimed — a different quantity from power at the shaft; the 555 has only engine power (gross or net not stated), claimed — a different quantity from power at the shaft.
- The IMT 555 suits loader and hydraulic implement work better on this data: 18% (180 kg / 397 lb) more three-point lift.
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 | FD-5 | 555 | Call |
|---|---|---|---|
| Which puts more power through the PTO shaft? | 36.8 kW (49.3 hp)Traktorenlexikon, “Allis-Chalmers FD 5” | 36.8 kW (49.3 hp)Traktorenlexikon, “IMT 555” | Not comparableNot comparable on power at the PTO shaft: the FD-5 has only engine power (gross or net not stated), claimed — a different quantity from power at the shaft; the 555 has only engine power (gross or net not stated), claimed — a different quantity from power at the shaft. |
| 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 FD-5 and the 555. |
| Which pulls harder at the drawbar? | — | — | No figureNo call on drawbar power: no figure on record for the FD-5 and the 555. |
| Which pumps more oil for implements? | — | 15.1 L/min (4.0 gpm)Traktorenlexikon, “IMT 555” | No figureNo call on hydraulic flow: no figure on record for the FD-5. |
| Which lifts more on the three-point hitch? | 1,000 kg (2,205 lb)Traktorenlexikon, “Allis-Chalmers FD 5” | 1,180 kg (2,601 lb)Traktorenlexikon, “IMT 555” | AheadThe IMT 555 has 18% more lift (180 kg / 397 lb) than the ALLIS-CHALMERS FD-5 (both lift at the hitch ends, as stated by the source). |
| Which is heavier, for traction? | 2,455 kg (5,412 lb)Traktorenlexikon, “Allis-Chalmers FD 5” | 1,870 kg (4,123 lb)Traktorenlexikon, “IMT 555” | Ahead (a fact, not an advantage)The ALLIS-CHALMERS FD-5 is 31% heavier (585 kg / 1,290 lb) than the IMT 555 (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 FD-5 and the 555. |
| Which has the wider choice of gears? | 8Traktorenlexikon, “Allis-Chalmers FD 5” | 6Traktorenlexikon, “IMT 555” | AheadThe ALLIS-CHALMERS FD-5 has 33% more forward gears (2 gears) than the IMT 555 (both forward gears, as stated by the source). |
| Which offers a creeper range? | — | — | No figureNo call on a creeper range: not stated for the FD-5 and the 555. |
| Which is faster on the road? | 25 km/h (15.5 mph)Traktorenlexikon, “Allis-Chalmers FD 5” | 25 km/h (15.5 mph)Traktorenlexikon, “IMT 555” | 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? | 540/1000 rpmTraktorenlexikon, “Allis-Chalmers FD 5” | 540 rpmTraktorenlexikon, “IMT 555” | AheadThe ALLIS-CHALMERS FD-5 offers 1000 rpm at the PTO, which the IMT 555 does not (as stated by the sources). |
| Which PTO runs independently of the ground drive? | — | — | No figureNo call on PTO independence: not stated for the FD-5 and the 555. |
| Which drives on both axles? | 2WDTraktorenlexikon, “Allis-Chalmers FD 5” | 2WDTraktorenlexikon, “IMT 555” | EvenEven on drive: all two-wheel drive. |
| Which is newer, and what about parts? | 1963–1965 | 1964–1971 | EvenSame era: production began within 5 years of each other. We hold no parts-availability data, so there is no call on parts. |
What does this mean in plain words?
- The IMT 555 has 18% more lift (180 kg / 397 lb) than the ALLIS-CHALMERS FD-5 (both lift at the hitch ends, as stated by the source).
- The ALLIS-CHALMERS FD-5 is 31% heavier (585 kg / 1,290 lb) than the IMT 555 (both unladen weight, as stated by the source).
- The ALLIS-CHALMERS FD-5 has 33% more forward gears (2 gears) than the IMT 555 (both forward gears, as stated by the source).
- The ALLIS-CHALMERS FD-5 offers 1000 rpm at the PTO, which the IMT 555 does not (as stated by the sources).
- 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 drive: all two-wheel drive.
- Same era: production began within 5 years of each other. We hold no parts-availability data, so there is no call on parts.
- Not comparable on power at the PTO shaft: the FD-5 has only engine power (gross or net not stated), claimed — a different quantity from power at the shaft; the 555 has only engine power (gross or net not stated), claimed — a different quantity from power at the shaft.
- No figure on record for every machine, so no call on: fuel efficiency at the shaft, drawbar power, hydraulic flow, maximum permissible mass, a creeper range and PTO independence.
← Every figure for both machines, side by side, with sources