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 Allis Chalmers HD7
Allis ChalmersModel B
Allis Chalmers HD7
Crawler
- power
- Not recorded
- displacement
- 213 ci
- Cylinders
- 3
- Forward gears
- 4
Allis ChalmersAllis Chalmers HD11
vs
Allis ChalmersAllis Chalmers HD7
How they compare
Headline specs vs. the whole Crawler
Engine Displacement
▲ HD11 higher · +303 ci (+142%)HD11516 ci
HD7213 ci
Median Crawler Tractor468 ci
HD11 is in the 58th percentile; HD7 is in the 29th · 191 models
Cylinders
▲ HD11 higher · +3 (+100%)HD116
HD73
Median Crawler Tractor6
HD11 is in the 50th percentile; HD7 is in the 10th · 192 models
Forward Gears
▲ HD11 higher · +2 (+50%)HD116
HD74
Median Crawler Tractor10
HD11 is in the 34th percentile; HD7 is in the 16th · 179 models
Operating Weight
▲ HD11 higher · +7,000 lb (+50%)HD1121,000 lb
HD714,000 lb
Median Crawler Tractor23,320 lb
HD11 is in the 48th percentile; HD7 is in the 43rd · 173 models
HD11 (A)HD7 (B)Median Crawler Tractor
Full comparison
Every spec, side by side
General Information
| Spec | Allis Chalmers HD11 | Allis Chalmers HD7 | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | Allis Chalmers | Same |
| Model | HD11 | HD7 | — |
| Category | Crawler, Agricultural | Crawler, Agricultural | Same |
Engine
| Spec | Allis Chalmers HD11 | Allis Chalmers HD7 | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | General Motors | — |
| Model | HD-516 | Mar-71 | — |
| Power Output | 110hp | Not recorded | — |
| Rated RPM | 1,800RPM | 1,500RPM | ▲ HD11+300 RPM · +20% |
| Cylinders | 6 | 3 | ▲ HD11+3 · +100% |
| Displacement | 516ci | 213ci | ▲ HD11+303 ci · +142% |
| Bore | 4.5in | 4.3in | ▲ HD11+0.2 in · +5% |
| Stroke | 5.6in | 5in | ▲ HD11+0.5 in · +10% |
Transmission
| Spec | Allis Chalmers HD11 | Allis Chalmers HD7 | Difference |
|---|---|---|---|
| Type | Sliding Gear | Sliding Gear | Same |
Dimensions & Weight
| Spec | Allis Chalmers HD11 | Allis Chalmers HD7 | Difference |
|---|---|---|---|
| Length | 154in | 128in | ▲ HD11+26 in · +20% |
| Width | 40in | 81in | ▲ HD7+41 in · +102% |
| Height | 84in | 69in | ▲ HD11+15 in · +22% |
| Operating Weight | 21,000lb | 14,000lb | ▲ HD11+7,000 lb · +50% |
Chassis & Drive
| Spec | Allis Chalmers HD11 | Allis Chalmers HD7 | Difference |
|---|---|---|---|
| Chassis Type | Crawler | Crawler | Same |
| Drive Type | Not recorded | Track | — |
| Brake Type | Contracting band | Not recorded | — |
Electrical
| Spec | Allis Chalmers HD11 | Allis Chalmers HD7 | Difference |
|---|---|---|---|
| Starter Type | Electric | Electric | Same |
Capacities
| Spec | Allis Chalmers HD11 | Allis Chalmers HD7 | Difference |
|---|---|---|---|
| Coolant | 11gal | 5.8gal | ▲ HD11+5.2 gal · +90% |
Operator Station
| Spec | Allis Chalmers HD11 | Allis Chalmers HD7 | Difference |
|---|---|---|---|
| Type | Open operator station | Not recorded | — |
Category context
Both models against the field
Engine Displacement
median 468 ciA · 58th percentile (516 ci)B · 29th percentile (213 ci)
Cylinders
median 6A · 50th percentile (6)B · 10th percentile (3)
Forward Gears
median 10A · 34th percentile (6)B · 16th percentile (4)
Operating Weight
median 23,320 lbA · 48th percentile (21,000 lb)B · 43rd percentile (14,000 lb)
Length
median 146 inA · 54th percentile (154 in)B · 33rd percentile (128 in)
A · HD11B · HD7Median Crawler Tractor