This page provides a detailed comparison of the specifications for the Hart-Parr 20 and the Waterloo Boy L.
| Hart-Parr 20 | Waterloo Boy L | |
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| Engine | ||
| Engine Manufacturer | Hart-Parr | Waterloo Gasoline Engine Company |
| Engine Cooling Type | - | Liquid-cooled |
| Engine Fuel Type | Kerosene | Kerosene |
| Engine Induction Type | Naturally Aspirated | Naturally Aspirated |
| Engine Cylinders | 2 | 2 |
| Engine Displacement Value | 309 ci (5.1 L) | 333 ci (5.5 L) |
| Engine Rated Rpm | 800 | 750 |
| Transmission | ||
| Transmission Type | Gear | Unsynchronized gear |
| Transmission Forward Gears | 2 | 1 |
| Transmission Reverse Gears | 1 | 1 |
| Dimensions | ||
| Operating Weight Value | 3990 lb (1810 kg) | 3000 lb (1361 kg) |
| Miscellaneous | ||
| Chassis | 4x2 2WD | 4x2 2WD |
| Drive Type | 2WD | 2WD |
| Front Tire Type | - | - |
| Rear Tire Type | - | - |
