Mccormick Deering F-12 Serie
1 model in this series
McCormick-Deering F-12 G of the F-12 series (International Harvester): a water-cooled four-cylinder row-crop tractor producing 11 kW (15 hp), running on petrol or kerosene, built 1937 to 1940, with a 15 km/h top speed.
McCormick-Deering was the tractor brand of the International Harvester Company (IHC) in the United States, formed in 1902 from the merger of the McCormick Harvesting Machine Company and the Deering Harvester Company. The F-12 was among the brand's smaller row-crop tractors in the 1930s; the F-12 G model is recorded for the period 1937 to 1940.
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The F-12 G is powered by a water-cooled four-cylinder engine with 1,853 cm3 displacement, which could run on either petrol or tractor vaporising oil (kerosene), as was common on many pre-war tractors in this price class. At a rated speed of 1,400 rpm it produces 11 kW (15 hp). At 1,675 kg, with a wheelbase of 1,950 mm and a design top speed of 15 km/h, it is a light, slow-running tractor.
As a small row-crop tractor of the 1930s, the F-12 G was built to work between narrow plant rows, with a narrow front axle and high ground clearance, as North American root-crop and maize production required at the time. Running on kerosene meant warming the engine up on petrol until it reached operating temperature, a common method of the era for using the cheaper fuel.
When buying a 1930s F-12 G, the state of the cooling system and cylinder head come first, since gaskets and coolant lines are especially prone to failure after nearly ninety years. On a carburettor set up for kerosene operation, check whether it is still original or has been converted to petrol-only running, and spare parts for pre-war IHC machinery are now mainly found through specialist collectors and vintage-tractor dealers.
Sources: SpecCodex-Register: Kennwerte des Modells McCormick-Deering F-12 G
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