The HT-340 (for Hydrostatic Turbine), a product of Internationals experimental group, was never intended to go into production and didnt. International began working on development of a hydrostatic drive tractor in the 1950s. When a 340 prototype tested well, the engineers cranked up the volume, installing a small gas turbine engine from the companys Solar Aircraft Co. subsidiary (which was named not, apparently, for an energy source but for the sunny skies in San Diego, where the company was founded in 1927).
The HT-340 made its debut on the show circuit in July 1961. But on the return trip from Lincoln, Neb., where it was displayed at the University of Nebraskas 10th annual Tractor Day, the tractor was extensively damaged in a traffic accident. Emergency repairs were made and the 340 was displayed at several events that summer.
Later that year, more extensive repairs and modifications were completed. The retrofitted prototype was unveiled in 1962 as the HT-341, complete with three-point hitch, stabilized steering, larger tires, rear lights, enhanced controls, a new fuel-filtering system and a new color scheme.
The 340 was blue and white; the 341 was red and white. The 341 was used in displays and demonstrations. In 1967, it was donated to the Smithsonian Institution in Washington, D.C.
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Today's Featured Article - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let’s make one more addition to our series on hydraulics. I’ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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