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 Versatile 835
Image not recorded
VersatileModel B
Versatile 835
Standard Tread
- power
- 230 hp
- displacement
- 855 ci
- Cylinders
- 6
- Forward gears
- 12
Allis ChalmersAllis Chalmers HD21
vs
VersatileVersatile 835
How they compare
Headline specs vs. the whole Agricultural
Engine Power
▲ 835 higher · +5 hp (+2%)HD21225 hp
835230 hp
Median Agricultural Tractor110 hp
HD21 is in the 84th percentile; 835 is in the 85th · 1,028 models
Engine Displacement
▲ 835 higher · +11 ci (+1%)HD21844 ci
835855 ci
Median Agricultural Tractor336 ci
HD21 is in the 96th percentile; 835 is in the 97th · 1,083 models
Cylinders
= Effectively tiedHD216
8356
Median Agricultural Tractor5.5
HD21 is in the 74th percentile; 835 is in the 74th · 1,130 models
Forward Gears
▲ 835 higher · +10 (+500%)HD212
83512
Median Agricultural Tractor16
HD21 is in the 1st percentile; 835 is in the 33rd · 972 models
HD21 (A)835 (B)Median Agricultural Tractor
Full comparison
Every spec, side by side
General Information
| Spec | Allis Chalmers HD21 | Versatile 835 | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | Versatile | — |
| Model | HD21 | 835 | — |
| Category | Agricultural | Standard Tread | — |
Engine
| Spec | Allis Chalmers HD21 | Versatile 835 | Difference |
|---|---|---|---|
| Manufacturer | Allis-Chalmers | Cummins | — |
| Model | Not recorded | NT-855-A230 | — |
| Power Output | 225hp | 230hp | ▲ 835+5 hp · +2% |
| Rated RPM | 1,800RPM | 2,100RPM | ▲ 835+300 RPM · +17% |
| Cylinders | 6 | 6 | Same |
| Displacement | 844ci | 855ci | ▲ 835+11 ci · +1% |
| Bore | 5.3in | 5.5in | ▲ 835+0.2 in · +4% |
| Stroke | 6.5in | 6in | ▲ HD21+0.5 in · +8% |
Transmission
| Spec | Allis Chalmers HD21 | Versatile 835 | Difference |
|---|---|---|---|
| Type | Torque Converter | Gear | — |
Dimensions & Weight
| Spec | Allis Chalmers HD21 | Versatile 835 | Difference |
|---|---|---|---|
| Length | 198in | 253in | ▲ 835+55 in · +28% |
| Width | Not recorded | 143in | — |
| Height | 99in | 127in | ▲ 835+28 in · +28% |
| Operating Weight | 45,500lb | 20,000lb | ▲ HD21+25,500 lb · +127% |
Hydraulics
| Spec | Allis Chalmers HD21 | Versatile 835 | Difference |
|---|---|---|---|
| System Type | Not recorded | Open Center | — |
| Steering Type | Not recorded | Power | — |
Hitch & Towing
| Spec | Allis Chalmers HD21 | Versatile 835 | Difference |
|---|---|---|---|
| Hitch Type | Not recorded | Category 3/4N | — |
| Hitch Category | Not recorded | Category 3 | — |
Chassis & Drive
| Spec | Allis Chalmers HD21 | Versatile 835 | Difference |
|---|---|---|---|
| Steering Type | Not recorded | Power | — |
Electrical
| Spec | Allis Chalmers HD21 | Versatile 835 | Difference |
|---|---|---|---|
| Starter Type | Electric | Electric | Same |
Capacities
| Spec | Allis Chalmers HD21 | Versatile 835 | Difference |
|---|---|---|---|
| Coolant | 20gal | 11.5gal | ▲ HD21+8.5 gal · +74% |
Operator Station
| Spec | Allis Chalmers HD21 | Versatile 835 | Difference |
|---|---|---|---|
| Type | Not recorded | Cab | — |
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 · 84th percentile (20,000 lb)
A · HD21B · 835Median Agricultural Tractor