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 New Holland TM150
New HollandModel B
New Holland TM150
Row Crop
- power
- 124 hp
- displacement
- 456 ci
- Cylinders
- 6
- Forward gears
- 18
Allis ChalmersAllis Chalmers D21 Series II
vs
New HollandNew Holland TM150
How they compare
Headline specs vs. the whole Row Crop
Engine Power
▲ TM150 higher · +3 hp (+2%)D21 Series II121 hp
TM150124 hp
Median Row Crop Tractor138 hp
D21 Series II is in the 40th percentile; TM150 is in the 41st · 1,206 models
Engine Displacement
▲ TM150 higher · +30 ci (+7%)D21 Series II426 ci
TM150456 ci
Median Row Crop Tractor391 ci
D21 Series II is in the 72nd percentile; TM150 is in the 80th · 1,409 models
Cylinders
= Effectively tiedD21 Series II6
TM1506
Median Row Crop Tractor6
D21 Series II is in the 50th percentile; TM150 is in the 50th · 1,417 models
Forward Gears
▲ TM150 higher · +10 (+125%)D21 Series II8
TM15018
Median Row Crop Tractor16
D21 Series II is in the 16th percentile; TM150 is in the 61st · 1,200 models
D21 Series II (A)TM150 (B)Median Row Crop Tractor
Full comparison
Every spec, side by side
General Information
| Spec | Allis Chalmers D21 Series II | New Holland TM150 | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | New Holland | — |
| Model | D21 Series II | TM150 | — |
| Category | Row Crop | Row Crop | Same |
Engine
| Spec | Allis Chalmers D21 Series II | New Holland TM150 | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | New Holland | — |
| Model | 3500 | Not recorded | — |
| Power Output | 121hp | 124hp | ▲ TM150+3 hp · +2% |
| Rated RPM | 2,200RPM | 2,200RPM | Same |
| Cylinders | 6 | 6 | Same |
| Displacement | 426ci | 456ci | ▲ TM150+30 ci · +7% |
| Bore | 4.3in | 4.4in | ▲ TM150+0.1 in · +2% |
| Stroke | 5in | 5in | Same |
Transmission
| Spec | Allis Chalmers D21 Series II | New Holland TM150 | Difference |
|---|---|---|---|
| Type | Sliding gear with dry disc clutch | Selective gear fixed ratio with partial (6) range operator-controlled powershift | — |
Dimensions & Weight
| Spec | Allis Chalmers D21 Series II | New Holland TM150 | Difference |
|---|---|---|---|
| Length | 160in | Not recorded | — |
| Width | 91.3in | 79.2in | ▲ D21 Series II+12.1 in · +15% |
| Height | 106in | Not recorded | — |
| Wheelbase | Not recorded | 93in | — |
| Operating Weight | 9,502lb | 14,130lb | ▲ TM150+4,628 lb · +49% |
Hydraulics
| Spec | Allis Chalmers D21 Series II | New Holland TM150 | Difference |
|---|---|---|---|
| System Type | Not recorded | Closed-center load sensing (CCLS) | — |
| Steering Type | Power | Power | Same |
Power Take-off (PTO)
| Spec | Allis Chalmers D21 Series II | New Holland TM150 | Difference |
|---|---|---|---|
| Type | Independent | Not recorded | — |
| Speed 1 | 1,000rpm | Not recorded | — |
Tires
| Spec | Allis Chalmers D21 Series II | New Holland TM150 | Difference |
|---|---|---|---|
| Front Tire Size | Not recorded | 16.9R28 | — |
| Rear Tire Size | Not recorded | 20.8R38 | — |
Hitch & Towing
| Spec | Allis Chalmers D21 Series II | New Holland TM150 | Difference |
|---|---|---|---|
| Hitch Type | Three-Point Hitch | II | — |
| Hitch Category | III/II | Category 3 | — |
| Hitch Position | Rear | Not recorded | — |
| Hitch Capacity | Not recorded | 8,320lb | — |
Chassis & Drive
| Spec | Allis Chalmers D21 Series II | New Holland TM150 | Difference |
|---|---|---|---|
| Chassis Type | 4x2 2WD | 4x2 2WD | Same |
| Drive Type | 2WD | Not recorded | — |
| Steering Type | Power | Power | Same |
| Brake Type | Band actuated disc | Not recorded | — |
Electrical
| Spec | Allis Chalmers D21 Series II | New Holland TM150 | Difference |
|---|---|---|---|
| Starter Type | Electric | Electric | Same |
Capacities
| Spec | Allis Chalmers D21 Series II | New Holland TM150 | Difference |
|---|---|---|---|
| Coolant | 7.8gal | 6.9gal | ▲ D21 Series II+0.9 gal · +13% |
Operator Station
| Spec | Allis Chalmers D21 Series II | New Holland TM150 | Difference |
|---|---|---|---|
| Type | Open | Not recorded | — |
Category context
Both models against the field
Engine Power
median 138 hpA · 40th percentile (121 hp)B · 41st percentile (124 hp)
Engine Displacement
median 391 ciA · 72nd percentile (426 ci)B · 80th percentile (456 ci)
Cylinders
median 6A · 50th percentile (6)B · 50th percentile (6)
Forward Gears
median 16A · 16th percentile (8)B · 61st percentile (18)
Operating Weight
median 12,307 lbA · 28th percentile (9,502 lb)B · 62nd percentile (14,130 lb)
A · D21 Series IIB · TM150Median Row Crop Tractor