Allis ChalmersModel A
Allis Chalmers HD11
Crawler
- power
- 110 hp
- displacement
- 516 ci
- Cylinders
- 6
- Forward gears
- 6
Head to head · Crawler
Allis Chalmers HD11 vs Oliver 1955
OliverModel B
Oliver 1955
Row Crop
- power
- 108 hp
- displacement
- 310 ci
- Cylinders
- 6
- Forward gears
- 6
Allis ChalmersAllis Chalmers HD11
vs
OliverOliver 1955
How they compare
Headline specs vs. the whole Crawler
Engine Power
▲ HD11 higher · +2 hp (+2%)HD11110 hp
1955108 hp
Median Crawler Tractor200 hp
HD11 is in the 46th percentile; 1955 is in the 46th · 142 models
Engine Displacement
▲ HD11 higher · +206 ci (+66%)HD11516 ci
1955310 ci
Median Crawler Tractor468 ci
HD11 is in the 58th percentile; 1955 is in the 41st · 191 models
Cylinders
= Effectively tiedHD116
19556
Median Crawler Tractor6
HD11 is in the 50th percentile; 1955 is in the 50th · 192 models
Forward Gears
= Effectively tiedHD116
19556
Median Crawler Tractor10
HD11 is in the 34th percentile; 1955 is in the 34th · 179 models
HD11 (A)1955 (B)Median Crawler Tractor
Full comparison
Every spec, side by side
General Information
| Spec | Allis Chalmers HD11 | Oliver 1955 | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | Oliver | — |
| Model | HD11 | 1955 | — |
| Category | Crawler, Agricultural | Row Crop | — |
Engine
| Spec | Allis Chalmers HD11 | Oliver 1955 | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | Oliver-Waukesha | — |
| Model | HD-516 | Oliver-Waukesha | — |
| Power Output | 110hp | 108hp | ▲ HD11+2 hp · +2% |
| Rated RPM | 1,800RPM | 2,400RPM | ▲ 1955+600 RPM · +33% |
| Cylinders | 6 | 6 | Same |
| Displacement | 516ci | 310ci | ▲ HD11+206 ci · +66% |
| Bore | 4.5in | 3.9in | ▲ HD11+0.6 in · +15% |
| Stroke | 5.6in | 4.4in | ▲ HD11+1.1 in · +25% |
Transmission
| Spec | Allis Chalmers HD11 | Oliver 1955 | Difference |
|---|---|---|---|
| Type | Sliding Gear | Gear | — |
Dimensions & Weight
| Spec | Allis Chalmers HD11 | Oliver 1955 | Difference |
|---|---|---|---|
| Length | 154in | 159in | ▲ 1955+5 in · +3% |
| Width | 40in | 80.3in | ▲ 1955+40.3 in · +101% |
| Height | 84in | 85.4in | ▲ 1955+1.4 in · +2% |
| Operating Weight | 21,000lb | 11,250lb | ▲ HD11+9,750 lb · +87% |
Hydraulics
| Spec | Allis Chalmers HD11 | Oliver 1955 | Difference |
|---|---|---|---|
| System Type | Not recorded | Closed center | — |
| Steering Type | Not recorded | Power | — |
Power Take-off (PTO)
| Spec | Allis Chalmers HD11 | Oliver 1955 | Difference |
|---|---|---|---|
| Type | Not recorded | Independent | — |
| Speed 1 | Not recorded | 1,000rpm | — |
Hitch & Towing
| Spec | Allis Chalmers HD11 | Oliver 1955 | Difference |
|---|---|---|---|
| Hitch Category | Not recorded | III/II | — |
| Hitch Capacity | Not recorded | 6,000lb | — |
Chassis & Drive
| Spec | Allis Chalmers HD11 | Oliver 1955 | Difference |
|---|---|---|---|
| Chassis Type | Crawler | 4x2 2WD | — |
| Drive Type | Not recorded | 2WD | — |
| Steering Type | Not recorded | Power | — |
| Brake Type | Contracting band | Differential hydraulic dry disc | — |
Electrical
| Spec | Allis Chalmers HD11 | Oliver 1955 | Difference |
|---|---|---|---|
| Starter Type | Electric | Electric | Same |
Capacities
| Spec | Allis Chalmers HD11 | Oliver 1955 | Difference |
|---|---|---|---|
| Coolant | 11gal | 5gal | ▲ HD11+6 gal · +120% |
Operator Station
| Spec | Allis Chalmers HD11 | Oliver 1955 | Difference |
|---|---|---|---|
| Type | Open operator station | Open operator station | Same |
Category context
Both models against the field
Engine Power
median 200 hpA · 46th percentile (110 hp)B · 46th percentile (108 hp)
Engine Displacement
median 468 ciA · 58th percentile (516 ci)B · 41st percentile (310 ci)
Cylinders
median 6A · 50th percentile (6)B · 50th percentile (6)
Forward Gears
median 10A · 34th percentile (6)B · 34th percentile (6)
Operating Weight
median 23,320 lbA · 48th percentile (21,000 lb)B · 36th percentile (11,250 lb)
A · HD11B · 1955Median Crawler Tractor