Wallis 20-30: all source data
All 37 values recorded for this model, as the source lists them and in its units. The spec sheet shows the same data checked, typed and converted.
Overview
Production| Manufacturer | Wallis (a part of J.I. Case Plow Works) |
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| (no label) | Standard-tread tractor |
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| (no label) | Built in Racine, Wisconsin, USA |
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Engine| (no label) | Wallis 5.7L 4-cyl gasoline |
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| Fuel tank | 20 gal | 75.7 L |
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| Aux. fuel | 1.75 gal | 6.6 L |
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Transmission| (no label) | 2-speed gear |
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Power| Drawbar (claimed) | 20 hp | 14.9 kW |
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| Belt (claimed) | 30 hp | 22.4 kW |
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| Plows | 3 |
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| Drawbar (tested) | 27.01 hp | 20.1 kW |
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| Belt (tested) | 35.29 hp | 26.3 kW |
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Mechanical| (no label) | Two-wheel drive |
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| Steering | manual |
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| (no label) | Open operator station. |
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Dimensions| Wheelbase | 84 inches | 213 cm |
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| Weight | 4,136 lbs | 1876 kg |
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| Rear tire | 48x12 |
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Belt pulley| Diameter | 19 inches | 48 cm |
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| Width | 7 inches | 17 cm |
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| RPM | 475 |
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Engine
Engine detail| (no label) | Wallis |
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| (no label) | gasoline |
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| (no label) | 4-cylinder |
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| (no label) | liquid-cooled |
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| Displacement | 346 ci | 5.7 L |
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| Bore/Stroke | 4.375x5.75 inches | 111 x 146 mm |
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| Rated RPM | 1050 |
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| Starter type | hand-crank |
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Transmission
Transmission| Type | gear |
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| Gears | 2 forward and 1 reverse |
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| Clutch | dry disc |
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Dimensions
Tires| Ag rear | 48x12 (steel) |
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Dimensions| Wheelbase | 84 inches | 213 cm |
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| Length | 131.5 inches | 334 cm |
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| Height | 55 inches | 139 cm |
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| Weight | 4,136 lbs | 1876 kg |
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