John Deere Modell-M or MASSEY-HARRIS M-H 81?
Which should you choose?
The data can’t decide this. Power at the PTO shaft cannot be compared: the Modell-M has only engine power (gross or net not stated), claimed — a different quantity from power at the shaft; the M-H 81 has only engine power (gross or net not stated), claimed — a different quantity from power at the shaft.
- The MASSEY-HARRIS M-H 81 suits road haulage better on this data: 56% (9.0 km/h / 5.6 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 | Modell-M | M-H 81 | Call |
|---|---|---|---|
| Which puts more power through the PTO shaft? | 15.2 kW (20.4 hp)Traktorenlexikon, “John Deere Modell M” | 15.5 kW (20.8 hp)Traktorenlexikon, “Massey-Harris Massey-Harris 81” | Not comparableNot comparable on power at the PTO shaft: the Modell-M has only engine power (gross or net not stated), claimed — a different quantity from power at the shaft; the M-H 81 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 Modell-M and the M-H 81. |
| Which pulls harder at the drawbar? | — | — | No figureNo call on drawbar power: no figure on record for the Modell-M and the M-H 81. |
| Which pumps more oil for implements? | 16.1 L/min (4.3 gpm)Traktorenlexikon, “John Deere Modell M” | — | No figureNo call on hydraulic flow: no figure on record for the M-H 81. |
| Which lifts more on the three-point hitch? | — | — | No figureNo call on three-point lift: no figure on record for the Modell-M and the M-H 81. |
| Which is heavier, for traction? | 1,782 kg (3,929 lb) to 1,947 kg (4,292 lb)Traktorenlexikon, “John Deere Modell M” | 1,213 kg (2,674 lb)Traktorenlexikon, “Massey-Harris Massey-Harris 81” | Ahead (a fact, not an advantage)The John Deere Modell-M is 47% heavier (569 kg / 1,254 lb) than the MASSEY-HARRIS M-H 81 (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 Modell-M and the M-H 81. |
| Which has the wider choice of gears? | 4Traktorenlexikon, “John Deere Modell M” | 4Traktorenlexikon, “Massey-Harris Massey-Harris 81” | 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 Modell-M and the M-H 81. |
| Which is faster on the road? | 16 km/h (9.9 mph)Traktorenlexikon, “John Deere Modell M” | 25 km/h (15.5 mph)Traktorenlexikon, “Massey-Harris Massey-Harris 81” | AheadThe MASSEY-HARRIS M-H 81 has 56% more top speed (9.0 km/h / 5.6 mph) than the John Deere Modell-M (both top speed forward, as stated by the source). |
| Which offers more PTO speeds? | 546 rpmTraktorenlexikon, “John Deere Modell M” | 540 rpmTraktorenlexikon, “Massey-Harris Massey-Harris 81” | No figureNo call on PTO speeds: no standard PTO speed stated for the Modell-M. |
| Which PTO runs independently of the ground drive? | dependent (stops with the clutch)Traktorenlexikon, “John Deere Modell M” | — | No figureNo call on PTO independence: not stated for the M-H 81. |
| Which drives on both axles? | 2WDTraktorenlexikon, “John Deere Modell M” | 2WDTraktorenlexikon, “Massey-Harris Massey-Harris 81” | EvenEven on drive: all two-wheel drive. |
| Which is newer, and what about parts? | 1947–1952 | 1941–1946 | Ahead (a fact, not an advantage)The John Deere Modell-M is newer: production began 6 years later. We hold no parts-availability data, so there is no call on parts. |
What does this mean in plain words?
- The John Deere Modell-M is 47% heavier (569 kg / 1,254 lb) than the MASSEY-HARRIS M-H 81 (both unladen weight, as stated by the source).
- The MASSEY-HARRIS M-H 81 has 56% more top speed (9.0 km/h / 5.6 mph) than the John Deere Modell-M (both top speed forward, as stated by the source).
- The John Deere Modell-M is newer: production began 6 years later. We hold no parts-availability data, so there is no call on parts.
- 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.
- Not comparable on power at the PTO shaft: the Modell-M has only engine power (gross or net not stated), claimed — a different quantity from power at the shaft; the M-H 81 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, three-point lift, maximum permissible mass, a creeper range, PTO speeds and PTO independence.
← Every figure for both machines, side by side, with sources