Page 296 - LEGO MINDSTORMS - Robotics Invention System-2 Projects
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Robot 9 • The SpinnerBot

            Final Step 16

            Attach the Arm Drive sub-assembly as
            shown. The dangling black half-beam should
            be aligned with the two protruding pins
            further down on the body of the
            SpinnerBot. Once the Arm Drive is seated,
            this half-beam has to be snapped onto the
            pins, securing the entire column in place.
                Take the blue rubber band that is
            loosely attached to the Lower Arm
            Drive’s shaft, and slip it securely around the
            groove of the small pulley on the shaft.
            Once it is in place, stretch the band around
            the larger pulley on the arm motor. The
            band be lined up vertically, and it should
            fit snugly without crossing over itself.








                                                             Insert pins here
                 Final Step 17
















                  Looking at the
                  left side of the Arm
                  Drive, connect the
                  two liftarms to the side of the
                  motor housing using the axle pins. This
                  will prevent the housing from coming
                  loose under strain.









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