Heider C 12-20: all source data
All 36 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 | Heider (a part of Rock Island) |
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| (no label) | Standard-tread tractor |
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| (no label) | Built in Rock Island, Illinois, USA |
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Engine| (no label) | Waukesha 7.0L 4-cyl kerosene |
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| Fuel tank | 21 gal | 79.5 L |
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Transmission| (no label) | 7-speed friction drive |
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Power| Drawbar (claimed) | 9 hp | 6.7 kW |
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| Belt (claimed) | 16 hp | 11.9 kW |
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| Plows | 4 |
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| Drawbar (tested) | 13.43 hp | 10.0 kW |
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| Belt (tested) | 24.24 hp | 18.1 kW |
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Mechanical| (no label) | Two-wheel drive |
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| Steering | manual |
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| (no label) | Four-post canopy. |
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Hitch| Type | Heider Plow Lift |
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Dimensions| Wheelbase | 96 inches | 243 cm |
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| Weight | 6,000 lbs | 2721 kg |
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| Front tire | 30x5 |
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| Rear tire | 57x10 |
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Engine
Engine detail| (no label) | Waukesha |
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| (no label) | kerosene |
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| (no label) | 4-cylinder |
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| (no label) | liquid-cooled |
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| Displacement | 429 ci | 7.0 L |
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| Bore/Stroke | 4.50x6.75 inches | 114 x 171 mm |
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| Rated RPM | 900 |
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| Coolant capacity (Coolant) | 36 qts | 34.1 L |
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Transmission
Transmission| Type | friction drive |
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| Gears | 7 forward and reverse |
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Dimensions
Tires| Ag front | 30x5 steel |
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| Ag rear | 57x10 steel |
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Dimensions| Wheelbase | 96 inches | 243 cm |
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| Length | 144 inches | 365 cm |
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| Width | 74 inches | 187 cm |
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| Height | 96 inches | 243 cm |
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| Weight | 6,000 lbs | 2721 kg |
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