Posted by Madisonbob on January 30, 2019 at 22:07:40 from (174.238.165.239):
In Reply to: Wednesday Tractor Pic posted by kcm.MN on January 29, 2019 at 22:10:21:
They were way ahead of their time. I have an SD-4 built in 1954, has 51 hp, live power, live hydraulics, and 10 speed transmission. Built tractors from 1948 to 1956 but had to be paid for when you ordered one. First attempt at tractors was adapting the SD-3 engine to a Farmall M. Did not work out well, used half as much fuel but not as much power as the gas M. In 1955 they developed a power steering unit for SD-4 which worked very well. Mack Trucks (were built in same city in Pennsylvania) as tractors, Mack liked the unit and it was then produced for them and the rest is history. The Sheppard Steering Sector is used today by many Semi truck manufacturers. Same company is still going, quit tractors because of truck business.
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Today's Featured Article - Experimental Tractors Article - by Danny Bowes (Dsl). Tractor technology appears to have nearly hit it's pinnacle of development. If you agreed with the subtitle, you are rather mistaken. Quite, actually. As a matter of fact, some of the technology experimented with over 40 years ago makes today's tractor technology seem absolutely stale by comparison. Experimentation, from the most complex assembly to the most simple and mundane component, is as an integral a part of any farm tractor's development
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