Big Arm

Moving very slowly, this large machine is essentially a large remote-controlled arm. Its only means of forward motion is by literally dragging itself along. The front end is a huge vertically triangulated backhoe that culminates in what resembles a giant jaw, rather than a backhoe.s bucket, and it rests nose-down on the ground. A gas engine powers hydraulics that impel the machine forward by triggering linkage, making the machine pull itself along by its .nose.. The first motion of the hydraulics extends the nose up off the ground; the second motion extends the nose outward; then returning to the first hydroram the operator puts the nose back down away from the machine; the second hydroram is then used to pull the nose in toward the machine itself to inch the entire machine forward.

Fuel load: 8 gallons; gasoline

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