Image not recorded
Allis ChalmersModel A
Allis Chalmers D21 Series I
Row Crop
- power
- 103 hp
- displacement
- 426 ci
- Cylinders
- 6
- Forward gears
- 8
Head to head · Row Crop
Allis Chalmers D21 Series I vs Deutz-Fahr DX 90
Deutz-FahrModel B
Deutz-Fahr DX 90
Row Crop
- power
- 102 hp
- displacement
- 287 ci
- Cylinders
- 5
- Forward gears
- 15
Allis ChalmersAllis Chalmers D21 Series I
vs
Deutz-FahrDeutz-Fahr DX 90
How they compare
Headline specs vs. the whole Row Crop
Engine Power
▲ D21 Series I higher · +1 hp (<1%)D21 Series I103 hp
DX 90102 hp
Median Row Crop Tractor138 hp
D21 Series I is in the 27th percentile; DX 90 is in the 26th · 1,206 models
Engine Displacement
▲ D21 Series I higher · +139 ci (+48%)D21 Series I426 ci
DX 90287 ci
Median Row Crop Tractor391 ci
D21 Series I is in the 72nd percentile; DX 90 is in the 29th · 1,409 models
Cylinders
▲ D21 Series I higher · +1 (+20%)D21 Series I6
DX 905
Median Row Crop Tractor6
D21 Series I is in the 50th percentile; DX 90 is in the 31st · 1,417 models
Forward Gears
▲ DX 90 higher · +7 (+88%)D21 Series I8
DX 9015
Median Row Crop Tractor16
D21 Series I is in the 16th percentile; DX 90 is in the 33rd · 1,200 models
D21 Series I (A)DX 90 (B)Median Row Crop Tractor
Full comparison
Every spec, side by side
General Information
| Spec | Allis Chalmers D21 Series I | Deutz-Fahr DX 90 | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | Deutz-Fahr | — |
| Model | D21 Series I | DX 90 | — |
| Category | Row Crop | Row Crop | Same |
Engine
| Spec | Allis Chalmers D21 Series I | Deutz-Fahr DX 90 | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | Deutz-Fahr | — |
| Model | 3400 | F5L 912 | — |
| Power Output | 103hp | 102hp | ▲ D21 Series I+1 hp · <1% |
| Rated RPM | 2,200RPM | 2,300RPM | ▲ DX 90+100 RPM · +5% |
| Cylinders | 6 | 5 | ▲ D21 Series I+1 · +20% |
| Displacement | 426ci | 287ci | ▲ D21 Series I+139 ci · +48% |
| Bore | 4.3in | 3.9in | ▲ D21 Series I+0.4 in · +10% |
| Stroke | 5in | 4.7in | ▲ D21 Series I+0.3 in · +6% |
Transmission
| Spec | Allis Chalmers D21 Series I | Deutz-Fahr DX 90 | Difference |
|---|---|---|---|
| Type | Sliding gear with dry disc clutch | Fully synchronized | — |
Dimensions & Weight
| Spec | Allis Chalmers D21 Series I | Deutz-Fahr DX 90 | Difference |
|---|---|---|---|
| Length | 161in | 170in | ▲ DX 90+9 in · +6% |
| Width | 91.6in | Not recorded | — |
| Height | 107in | 102in | ▲ D21 Series I+5 in · +5% |
| Operating Weight | 9,500lb | 9,856lb | ▲ DX 90+356 lb · +4% |
Hydraulics
| Spec | Allis Chalmers D21 Series I | Deutz-Fahr DX 90 | Difference |
|---|---|---|---|
| Steering Type | Power | Power | Same |
Power Take-off (PTO)
| Spec | Allis Chalmers D21 Series I | Deutz-Fahr DX 90 | Difference |
|---|---|---|---|
| Type | Independent | Not recorded | — |
| Speed 1 | 1,000rpm | Not recorded | — |
Hitch & Towing
| Spec | Allis Chalmers D21 Series I | Deutz-Fahr DX 90 | Difference |
|---|---|---|---|
| Hitch Type | Three-Point Hitch | Not recorded | — |
| Hitch Category | III/II | II | — |
| Hitch Position | Rear | Rear | Same |
Chassis & Drive
| Spec | Allis Chalmers D21 Series I | Deutz-Fahr DX 90 | Difference |
|---|---|---|---|
| Chassis Type | 4x2 2WD | 4x2 2WD | Same |
| Drive Type | 2WD | 2WD | Same |
| Steering Type | Power | Power | Same |
| Brake Type | Band actuated disc | Not recorded | — |
Electrical
| Spec | Allis Chalmers D21 Series I | Deutz-Fahr DX 90 | Difference |
|---|---|---|---|
| Starter Type | Electric | Not recorded | — |
Capacities
| Spec | Allis Chalmers D21 Series I | Deutz-Fahr DX 90 | Difference |
|---|---|---|---|
| Coolant | 5.3gal | Not recorded | — |
Operator Station
| Spec | Allis Chalmers D21 Series I | Deutz-Fahr DX 90 | Difference |
|---|---|---|---|
| Type | Open | Not recorded | — |
Category context
Both models against the field
Engine Power
median 138 hpA · 27th percentile (103 hp)B · 26th percentile (102 hp)
Engine Displacement
median 391 ciA · 72nd percentile (426 ci)B · 29th percentile (287 ci)
Cylinders
median 6A · 50th percentile (6)B · 31st percentile (5)
Forward Gears
median 16A · 16th percentile (8)B · 33rd percentile (15)
Operating Weight
median 12,307 lbA · 28th percentile (9,500 lb)B · 31st percentile (9,856 lb)
A · D21 Series IB · DX 90Median Row Crop Tractor