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What is tractor pulling?
Tractor
pulls are a very popular event in rural areas. This most rural of
motor sports is more exciting than the uninitiated would suspect,
with roaring tractor engines poring smoke and wheels kicking up dirt
as they strain against their loads.
The origins of tractor pulling date back to the 1800s or even
before. All pulling work at that time was done by horses or oxen,
and farmers would often boast about a particularly strong team.
Challenges would be set up, and often money was wagered. One method
used was to take a barn door, lay it flat on the ground, and hitch
the team to it. One by one people would jump on the door as the team
dragged it. The horse, ox, or team who pulled the most people
farthest would be judged the strongest. Events of this nature
involving horses are still held today.
It was in the 1930s that pulling events with motorized tractors
first began becoming popular and tractor pulling events began
appearing sporadically in the Midwest. However, it was not until the
post-WWII era that the sport really began taking off. Unfortunately,
at this time, there was no uniform set of rules for tractor pulls.
They varied from state to state, county to county, and even
individual event to individual event, so no competitors really had
no idea what they would be facing beforehand. In 1969, tractor
pulling enthusiasts from eight states got together and codified an
uniform rule book, and created the National Tractor Pulling
Association. Early in the sport, tractors in use were stock
utilitarian farm vehicles, in accordance with the motto, "Pull on
Sunday, plow on Monday". Into the 1970s, the only two classes were
stock (factory spec tractors), and modified, modifieds being stock
tractor chassis with non-tractor engines mounted in them.
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The invention of the cross-box allowing two or more engines, was the
first great technological revolution in tractor pulling. Before
long, tractors mounting up to seven engines became commonplace. In
the 1980s, gas turbine or jet engines began appearing on competition
tractors. Other types of motors that have seen use are surplus
gasoline engines from old tanks and even powerful radial aircraft
engines from vintage warbirds! The old motto "Pull on Sunday, plow
on Monday" is no longer very applicable to the highly complex and
specialized technological "race" machines used in today's tractor
pulls.
Of course, the center of any tractor pull is the sled. Today's sleds
use gearing to slowly push forward weights of up to 32 tons from
where their starting positions directly over the sled's axles,
causing the sled to increasingly dig into the ground until the
tractor can't pull any further against the friction. |