Allis ChalmersModel A
Allis Chalmers D21 Series II
Row Crop
- power
- 121 hp
- displacement
- 426 ci
- Cylinders
- 6
- Forward gears
- 8
Head to head · Row Crop
Allis Chalmers D21 Series II vs White 6810
Allis ChalmersAllis Chalmers D21 Series II
vs
WhiteWhite 6810
How they compare
Headline specs vs. the whole Row Crop
Engine Power
▲ D21 Series II higher · +1 hp (<1%)D21 Series II121 hp
6810120 hp
Median Row Crop Tractor138 hp
D21 Series II is in the 40th percentile; 6810 is in the 38th · 1,206 models
Engine Displacement
▲ D21 Series II higher · +67 ci (+19%)D21 Series II426 ci
6810359 ci
Median Row Crop Tractor391 ci
D21 Series II is in the 72nd percentile; 6810 is in the 41st · 1,409 models
Cylinders
= Effectively tiedD21 Series II6
68106
Median Row Crop Tractor6
D21 Series II is in the 50th percentile; 6810 is in the 50th · 1,417 models
Forward Gears
▲ 6810 higher · +24 (+300%)D21 Series II8
681032
Median Row Crop Tractor16
D21 Series II is in the 16th percentile; 6810 is in the 91st · 1,200 models
D21 Series II (A)6810 (B)Median Row Crop Tractor
Full comparison
Every spec, side by side
General Information
| Spec | Allis Chalmers D21 Series II | White 6810 | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | White | — |
| Model | D21 Series II | 6810 | — |
| Category | Row Crop | Utility | — |
Engine
| Spec | Allis Chalmers D21 Series II | White 6810 | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | Cummins | — |
| Model | 3500 | B5.9T | — |
| Power Output | 121hp | 120hp | ▲ D21 Series II+1 hp · <1% |
| Rated RPM | 2,200RPM | 1,900RPM | ▲ D21 Series II+300 RPM · +16% |
| Cylinders | 6 | 6 | Same |
| Displacement | 426ci | 359ci | ▲ D21 Series II+67 ci · +19% |
| Bore | 4.3in | 4in | ▲ D21 Series II+0.3 in · +7% |
| Stroke | 5in | 4.7in | ▲ D21 Series II+0.3 in · +6% |
Transmission
| Spec | Allis Chalmers D21 Series II | White 6810 | Difference |
|---|---|---|---|
| Type | Sliding gear with dry disc clutch | Four-speed power shift | — |
Dimensions & Weight
| Spec | Allis Chalmers D21 Series II | White 6810 | Difference |
|---|---|---|---|
| Length | 160in | 173in | ▲ 6810+13 in · +8% |
| Width | 91.3in | 87.8in | ▲ D21 Series II+3.5 in · +4% |
| Height | 106in | 109in | ▲ 6810+3 in · +3% |
| Wheelbase | Not recorded | 113in | — |
| Operating Weight | 9,502lb | 12,721lb | ▲ 6810+3,219 lb · +34% |
Hydraulics
| Spec | Allis Chalmers D21 Series II | White 6810 | Difference |
|---|---|---|---|
| System Type | Not recorded | Closed center | — |
| Pump Flow Capacity | Not recorded | 28.6gpm | — |
| Pressure | Not recorded | 2,750psi | — |
| Steering Type | Power | Power | Same |
Power Take-off (PTO)
| Spec | Allis Chalmers D21 Series II | White 6810 | Difference |
|---|---|---|---|
| Type | Independent | Independent with wet disc clutch | — |
| Speed 1 | 1,000rpm | 540rpm | ▲ D21 Series II+460 rpm · +85% |
| Speed 3 | Not recorded | 1,000rpm | — |
| Power Rating | Not recorded | 118hp | — |
Hitch & Towing
| Spec | Allis Chalmers D21 Series II | White 6810 | Difference |
|---|---|---|---|
| Hitch Type | Three-Point Hitch | Three-Point Hitch | Same |
| Hitch Category | III/II | II | — |
| Hitch Position | Rear | Rear | Same |
| Hitch Capacity | Not recorded | 9,194lb | — |
Chassis & Drive
| Spec | Allis Chalmers D21 Series II | White 6810 | Difference |
|---|---|---|---|
| Chassis Type | 4x2 2WD | Not recorded | — |
| Drive Type | 2WD | Front wheel assist | — |
| Steering Type | Power | Power | Same |
| Brake Type | Band actuated disc | Hydraulic wet disc | — |
Electrical
| Spec | Allis Chalmers D21 Series II | White 6810 | Difference |
|---|---|---|---|
| Starter Type | Electric | Electric | Same |
Capacities
| Spec | Allis Chalmers D21 Series II | White 6810 | Difference |
|---|---|---|---|
| Coolant | 7.8gal | Not recorded | — |
Operator Station
| Spec | Allis Chalmers D21 Series II | White 6810 | Difference |
|---|---|---|---|
| Type | Open | ROPS or Cab with optional air-conditioning | — |
Category context
Both models against the field
Engine Power
median 138 hpA · 40th percentile (121 hp)B · 38th percentile (120 hp)
Engine Displacement
median 391 ciA · 72nd percentile (426 ci)B · 41st percentile (359 ci)
Cylinders
median 6A · 50th percentile (6)B · 50th percentile (6)
Forward Gears
median 16A · 16th percentile (8)B · 91st percentile (32)
Operating Weight
median 12,307 lbA · 28th percentile (9,502 lb)B · 53rd percentile (12,721 lb)
A · D21 Series IIB · 6810Median Row Crop Tractor