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Allis ChalmersModel A
Allis Chalmers 620
Utility
- power
- 19.5 hp
- displacement
- 49.8 ci
- Cylinders
- 2
- Forward gears
- Not recorded
Head to head · Sub-Compact
Allis Chalmers 620 vs Stihl S 20
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StihlModel B
Stihl S 20
Sub-Compact
- power
- 20 hp
- displacement
- 61.3 ci
- Cylinders
- 2
- Forward gears
- 6
Allis ChalmersAllis Chalmers 620
vs
StihlStihl S 20
How they compare
Headline specs vs. the whole Sub-Compact
Engine Power
▲ S 20 higher · +0.5 hp (+3%)62019.5 hp
S 2020 hp
Median Sub-Compact Tractor26.9 hp
620 is in the 22nd percentile; S 20 is in the 25th · 816 models
Engine Displacement
▲ S 20 higher · +11.5 ci (+23%)62049.8 ci
S 2061.3 ci
Median Sub-Compact Tractor91.4 ci
620 is in the 9th percentile; S 20 is in the 24th · 757 models
Cylinders
= Effectively tied6202
S 202
Median Sub-Compact Tractor3
620 is in the 11th percentile; S 20 is in the 11th · 802 models
Operating Weight
▲ S 20 higher · +663 lb (+44%)6201,499 lb
S 202,162 lb
Median Sub-Compact Tractor2,700 lb
620 is in the 22nd percentile; S 20 is in the 40th · 711 models
620 (A)S 20 (B)Median Sub-Compact Tractor
Full comparison
Every spec, side by side
General Information
| Spec | Allis Chalmers 620 | Stihl S 20 | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | Stihl | — |
| Model | 620 | S 20 | — |
| Category | Utility, Sub-Compact | Sub-Compact | — |
Engine
| Spec | Allis Chalmers 620 | Stihl S 20 | Difference |
|---|---|---|---|
| Manufacturer | Onan | MWM | — |
| Model | CCKB | AKD 10Z | — |
| Power Output | 19.5hp | 20hp | ▲ S 20+0.5 hp · +3% |
| Rated RPM | 3,600RPM | 3,000RPM | ▲ 620+600 RPM · +20% |
| Cylinders | 2 | 2 | Same |
| Displacement | 49.8ci | 61.3ci | ▲ S 20+11.5 ci · +23% |
| Bore | 3.3in | Not recorded | — |
| Stroke | 3in | Not recorded | — |
Transmission
| Spec | Allis Chalmers 620 | Stihl S 20 | Difference |
|---|---|---|---|
| Type | Hydrostatic | Unsynchronized gear | — |
Dimensions & Weight
| Spec | Allis Chalmers 620 | Stihl S 20 | Difference |
|---|---|---|---|
| Length | 82.7in | Not recorded | — |
| Width | 47.6in | 57.9in | ▲ S 20+10.3 in · +22% |
| Height | 42.9in | 63in | ▲ S 20+20.1 in · +47% |
| Operating Weight | 1,499lb | 2,162lb | ▲ S 20+663 lb · +44% |
Power Take-off (PTO)
| Spec | Allis Chalmers 620 | Stihl S 20 | Difference |
|---|---|---|---|
| Speed 1 | 2,000rpm | Not recorded | — |
| Speed 2 | 2,000rpm | Not recorded | — |
Chassis & Drive
| Spec | Allis Chalmers 620 | Stihl S 20 | Difference |
|---|---|---|---|
| Chassis Type | 4x2 2WD | 4x2 2WD | Same |
| Drive Type | 2WD | 2WD | Same |
Electrical
| Spec | Allis Chalmers 620 | Stihl S 20 | Difference |
|---|---|---|---|
| Starter Type | Electric | Electric Starter | — |
Operator Station
| Spec | Allis Chalmers 620 | Stihl S 20 | Difference |
|---|---|---|---|
| Type | Open | Not recorded | — |
Category context
Both models against the field
Engine Power
median 26.9 hpA · 22nd percentile (19.5 hp)B · 25th percentile (20 hp)
Engine Displacement
median 91.4 ciA · 9th percentile (49.8 ci)B · 24th percentile (61.3 ci)
Cylinders
median 3A · 11th percentile (2)B · 11th percentile (2)
Operating Weight
median 2,700 lbA · 22nd percentile (1,499 lb)B · 40th percentile (2,162 lb)
Width
median 50.7 inA · 40th percentile (47.6 in)B · 68th percentile (57.9 in)
A · 620B · S 20Median Sub-Compact Tractor