Demand for big tractors to break up prairie land fell off in the mid-teens as the land boom in Western Canada collapsed. Manufacturers rushed to come up with 2-3 plow lightweight tractors to replace horses on some smaller farms. The new Mogul 8-16 was a true lightweight tractor, weighing about 5,000 lb and with a 2-plow rating. The engine was a 616ci single-cylinder. The arched front frame and closely spaced front wheels made possible sharp turns for maneuverability in small fields.
The trend toward smaller, cheaper, models really got going with the introduction of the Bull tractor in late-1913. The Bull was an unusual 3-wheeled design with one driven rear wheel. It weighed only 3,800 lb and its unheard of low price of $335 sent it to the top of the sales charts in the US. First full-year production was 3,800. The only remotely competitive models were the Samson single-cylinder Sieve-Grip 6-12, which sold mainly in the Pacific Coast states, and the Waterloo Boy Model L. Waterloo Boy was just getting started with a smaller model and production of the L was only 29 tractors in the first part of 1914 before it was replaced by a more-powerful model. By 1915 farmers were beginning to realize that the Bull had many failings. It was unreliable and it didn’t have enough power (5-12 hp rating) for its 2-plow rating. Bull sales began to drop off. At that time International Harvester introduced the Mogul 8-16. It was simple, reliable, and maneuverable and its large single-cylinder engine and two drive wheels gave it the power and traction to easily handle a 2-bottom plow in most soils. Although it cost almost twice as much as the Bull, sales took off. Mogul production was 5,111 the first full year and went up from there.