This page provides a detailed comparison of the specifications for the Allis Chalmers Unknown and the Twin City Unknown.
| Allis Chalmers Unknown | Twin City Unknown | |
|---|---|---|
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| Engine | ||
| Engine Manufacturer | Le Roi | Twin City |
| Engine Model | 2-C | - |
| Engine Cooling Type | Liquid-cooled | Liquid-cooled |
| Engine Fuel Type | Gasoline | Kerosene |
| Engine Induction Type | Naturally aspirated | Naturally aspirated |
| Engine Cylinders | 4 | 4 |
| Engine Displacement Value | 138 ci (2.3 L) | 340 ci (5.6 L) |
| Engine Rated Rpm | 1200 | 1000 |
| Transmission | ||
| Transmission Type | Gear | Gear |
| Transmission Forward Gears | 1 | 2 |
| Transmission Reverse Gears | 1 | 1 |
| Dimensions | ||
| Length Value | 156 | 134 |
| Width Value | 54 | 63 |
| Operating Weight Value | 2500 lb (1134 kg) | 5000 lb (2268 kg) |
| Miscellaneous | ||
| Chassis | 4x2 2WD | - |
| Drive Type | 2WD | - |
| Front Tire Type | - | - |
| Rear Tire Type | - | - |
| Hitch Category | - | Category 3 |
| Starter Type | - | Hand-crank |
