This is a model of a large crawler crane, not based on a certain model, but designed using pictures of 3 different cranes.
Model description:
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Size: 47 x 29 x 150 cm
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Seven motors
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Four receivers
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Pneumatic pump
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Three AA battery boxes
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Number of parts: 3500
Model remote functions:
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Traction and steering with two motors
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Crane house rotation
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Cabin tilt (pneumatic)
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All crane movements
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Hoisting
Model manual functions: