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The FK36(r) and Pak 36(r) both had a split-trail carriage with a transverse leaf spring axle suspension, and steel wheels, with foam rubber filled tires. The guns were equipped with a semi-automatic vertical breech block ; the recoil mechanism consisted of a hydraulic recoil buffer and a hydropneumatic recuperator.
Differential braking for rear wheels would allow tight, controlled turns. An experimental model was developed in 1920. By 1923, prototypes of the rear-wheel-drive tractor with narrow front wheels were working crops. Production began in 1924, with tractors selling for $825. Tractors were marketed with a range of attachments for various duties.
The Farmall F-12 is a small two-plow row crop tractor produced by International Harvester under the Farmall brand from 1932 to 1938, with approximately 123,000 produced. An improved model, the two-plow F-14, was produced beginning in 1938 and ending in 1939, when the Farmall letter series tractors were introduced.
Foam-filled tires are made of regular rubber but replace the air inside with hardened liquid urethane. ... companies are willing to pay thousands more for them than air-filled tires. Skip to main ...
The F-20 was a modernization of the earlier Farmall Regular. It had a more powerful engine, improved narrow front wheels and a four-cylinder overhead valve engine with 29 horsepower (22 kW), feeding a four-gear sliding-gear transmission. The F-20 name implied that the machine could pull two plows. [1]
The more "extreme" a mud tire (such as a "Super Swamper") is, the harsher and louder it is on a hard surface. A "tractor tire" on a farm tractor is a somewhat milder version of a paddle tire, only the voids are smaller to allow for limited use on hard surfaces, and the "lugs" are angled to give lateral traction. A paddle tire is so optimized ...