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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 SAME Silver W 100
SAMEModel B
SAME Silver W 100
Utility
- power
- 103 hp
- displacement
- 244 ci
- Cylinders
- 4
- Forward gears
- Not recorded
Allis ChalmersAllis Chalmers D21 Series I
vs
SAMESAME Silver W 100
How they compare
Headline specs vs. the whole Row Crop
Engine Power
= Effectively tiedD21 Series I103 hp
Silver W 100103 hp
Median Row Crop Tractor138 hp
D21 Series I is in the 27th percentile; Silver W 100 is in the 27th · 1,206 models
Engine Displacement
▲ D21 Series I higher · +182 ci (+75%)D21 Series I426 ci
Silver W 100244 ci
Median Row Crop Tractor391 ci
D21 Series I is in the 72nd percentile; Silver W 100 is in the 15th · 1,409 models
Cylinders
▲ D21 Series I higher · +2 (+50%)D21 Series I6
Silver W 1004
Median Row Crop Tractor6
D21 Series I is in the 50th percentile; Silver W 100 is in the 17th · 1,417 models
Operating Weight
▲ D21 Series I higher · +901 lb (+10%)D21 Series I9,500 lb
Silver W 1008,599 lb
Median Row Crop Tractor12,307 lb
D21 Series I is in the 28th percentile; Silver W 100 is in the 23rd · 1,350 models
D21 Series I (A)Silver W 100 (B)Median Row Crop Tractor
Full comparison
Every spec, side by side
General Information
| Spec | Allis Chalmers D21 Series I | SAME Silver W 100 | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | SAME | — |
| Model | D21 Series I | Silver W 100 | — |
| Category | Row Crop | Utility | — |
Engine
| Spec | Allis Chalmers D21 Series I | SAME Silver W 100 | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | SAME | — |
| Model | 3400 | 1000.4-WT1 | — |
| Power Output | 103hp | 103hp | Same |
| Rated RPM | 2,200RPM | 2,500RPM | ▲ Silver W 100+300 RPM · +14% |
| Cylinders | 6 | 4 | ▲ D21 Series I+2 · +50% |
| Displacement | 426ci | 244ci | ▲ D21 Series I+182 ci · +75% |
| Bore | 4.3in | 4.1in | ▲ D21 Series I+0.2 in · +5% |
| Stroke | 5in | 4.5in | ▲ D21 Series I+0.5 in · +11% |
Transmission
| Spec | Allis Chalmers D21 Series I | SAME Silver W 100 | Difference |
|---|---|---|---|
| Type | Sliding gear with dry disc clutch | Not recorded | — |
Dimensions & Weight
| Spec | Allis Chalmers D21 Series I | SAME Silver W 100 | Difference |
|---|---|---|---|
| Length | 161in | 165in | ▲ Silver W 100+4 in · +2% |
| Width | 91.6in | Not recorded | — |
| Height | 107in | 107in | Same |
| Operating Weight | 9,500lb | 8,599lb | ▲ D21 Series I+901 lb · +10% |
Hydraulics
| Spec | Allis Chalmers D21 Series I | SAME Silver W 100 | Difference |
|---|---|---|---|
| Steering Type | Power | Not recorded | — |
Power Take-off (PTO)
| Spec | Allis Chalmers D21 Series I | SAME Silver W 100 | Difference |
|---|---|---|---|
| Type | Independent | Not recorded | — |
| Speed 1 | 1,000rpm | Not recorded | — |
Hitch & Towing
| Spec | Allis Chalmers D21 Series I | SAME Silver W 100 | Difference |
|---|---|---|---|
| Hitch Type | Three-Point Hitch | Not recorded | — |
| Hitch Category | III/II | III | — |
| Hitch Position | Rear | Not recorded | — |
Chassis & Drive
| Spec | Allis Chalmers D21 Series I | SAME Silver W 100 | Difference |
|---|---|---|---|
| Chassis Type | 4x2 2WD | Not recorded | — |
| Drive Type | 2WD | Not recorded | — |
| Steering Type | Power | Not recorded | — |
| Brake Type | Band actuated disc | Not recorded | — |
Electrical
| Spec | Allis Chalmers D21 Series I | SAME Silver W 100 | Difference |
|---|---|---|---|
| Starter Type | Electric | Not recorded | — |
Capacities
| Spec | Allis Chalmers D21 Series I | SAME Silver W 100 | Difference |
|---|---|---|---|
| Coolant | 5.3gal | Not recorded | — |
Operator Station
| Spec | Allis Chalmers D21 Series I | SAME Silver W 100 | Difference |
|---|---|---|---|
| Type | Open | Not recorded | — |
Category context
Both models against the field
Engine Power
median 138 hpA · 27th percentile (103 hp)B · 27th percentile (103 hp)
Engine Displacement
median 391 ciA · 72nd percentile (426 ci)B · 15th percentile (244 ci)
Cylinders
median 6A · 50th percentile (6)B · 17th percentile (4)
Operating Weight
median 12,307 lbA · 28th percentile (9,500 lb)B · 23rd percentile (8,599 lb)
Length
median 180 inA · 25th percentile (161 in)B · 30th percentile (165 in)
A · D21 Series IB · Silver W 100Median Row Crop Tractor