Radio Shack Mobile Robot - Manual (Page 22)

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Steering of the robot is accomplished using a standard RC servo motor attached to the rear wheels.
Read the assembly summary while viewing the drawings.
Summary:
Bend both 4” wires into steering linkages with pliers using the drawing as a pattern.
Attach the horn to the steering motor with a screw. Turn the horn in both directions to
determine the center position. In the center position, the horn should be oriented like the
drawing shows.
Mount the steering motor to the robot body per the drawing.
Mount the rear axles to the robot body using collars. You may have to put 6-32 x 1/4 screws
in each collar first.
Mount the wheels to the axles using collars.
Attach the linkages to the steering motor and to both steering arms.
Attach the steering arms to the axles.
Straighten the system, put the steering horn in the center of travel, loosen the steering arms
and straighten the wheels then retighten the arms.
Steering Motor and Rear Wheels
Full Scale Steering Linkage Pattern
3”
1/4”
1/4”
1/4”
1/4”
Steering Motor and Horn
More drawings on the next page
Shown in center position