Allis ChalmersModel A
Allis Chalmers HD21
Agricultural
- power
- 225 hp
- displacement
- 844 ci
- Cylinders
- 6
- Forward gears
- 2
Head to head · Agricultural
Allis Chalmers HD21 vs Fiat 44-23
FiatModel B
Fiat 44-23
Four-Wheel Drive
- power
- 230 hp
- displacement
- 855 ci
- Cylinders
- 6
- Forward gears
- 12
Allis ChalmersAllis Chalmers HD21
vs
FiatFiat 44-23
How they compare
Headline specs vs. the whole Agricultural
Engine Power
▲ 44-23 higher · +5 hp (+2%)HD21225 hp
44-23230 hp
Median Agricultural Tractor110 hp
HD21 is in the 84th percentile; 44-23 is in the 85th · 1,028 models
Engine Displacement
▲ 44-23 higher · +11 ci (+1%)HD21844 ci
44-23855 ci
Median Agricultural Tractor336 ci
HD21 is in the 96th percentile; 44-23 is in the 97th · 1,083 models
Cylinders
= Effectively tiedHD216
44-236
Median Agricultural Tractor5.5
HD21 is in the 74th percentile; 44-23 is in the 74th · 1,130 models
Forward Gears
▲ 44-23 higher · +10 (+500%)HD212
44-2312
Median Agricultural Tractor16
HD21 is in the 1st percentile; 44-23 is in the 33rd · 972 models
HD21 (A)44-23 (B)Median Agricultural Tractor
Full comparison
Every spec, side by side
General Information
| Spec | Allis Chalmers HD21 | Fiat 44-23 | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | Fiat | — |
| Model | HD21 | 44-23 | — |
| Category | Agricultural | Four-Wheel Drive | — |
Engine
| Spec | Allis Chalmers HD21 | Fiat 44-23 | Difference |
|---|---|---|---|
| Manufacturer | Allis-Chalmers | Cummins | — |
| Model | Not recorded | NT-855 | — |
| Power Output | 225hp | 230hp | ▲ 44-23+5 hp · +2% |
| Rated RPM | 1,800RPM | 2,100RPM | ▲ 44-23+300 RPM · +17% |
| Cylinders | 6 | 6 | Same |
| Displacement | 844ci | 855ci | ▲ 44-23+11 ci · +1% |
| Bore | 5.3in | 5.5in | ▲ 44-23+0.2 in · +4% |
| Stroke | 6.5in | 6in | ▲ HD21+0.5 in · +8% |
Transmission
| Spec | Allis Chalmers HD21 | Fiat 44-23 | Difference |
|---|---|---|---|
| Type | Torque Converter | Not recorded | — |
Dimensions & Weight
| Spec | Allis Chalmers HD21 | Fiat 44-23 | Difference |
|---|---|---|---|
| Length | 198in | 253in | ▲ 44-23+55 in · +28% |
| Height | 99in | 130in | ▲ 44-23+31 in · +31% |
| Operating Weight | 45,500lb | 26,239lb | ▲ HD21+19,261 lb · +73% |
Chassis & Drive
| Spec | Allis Chalmers HD21 | Fiat 44-23 | Difference |
|---|---|---|---|
| Chassis Type | Not recorded | 4x4 articulated 4WD | — |
| Drive Type | Not recorded | Four-wheel Drive (4WD) | — |
Electrical
| Spec | Allis Chalmers HD21 | Fiat 44-23 | Difference |
|---|---|---|---|
| Starter Type | Electric | Not recorded | — |
Capacities
| Spec | Allis Chalmers HD21 | Fiat 44-23 | Difference |
|---|---|---|---|
| Coolant | 20gal | Not recorded | — |
Category context
Both models against the field
Engine Power
median 110 hpA · 84th percentile (225 hp)B · 85th percentile (230 hp)
Engine Displacement
median 336 ciA · 96th percentile (844 ci)B · 97th percentile (855 ci)
Cylinders
median 5.5A · 74th percentile (6)B · 74th percentile (6)
Forward Gears
median 16A · 1st percentile (2)B · 33rd percentile (12)
Operating Weight
median 10,914 lbA · 99th percentile (45,500 lb)B · 93rd percentile (26,239 lb)
A · HD21B · 44-23Median Agricultural Tractor