Page 40 - Build a Remote Controlled Robot

FIGURE 1-7. Location of post holes. THE MOTORIZED PLATFORM 7

wheels and insert its frame post into one of the 3/4-inch
holes in the platform. Then turn the wheel so that the motor
and gearbox face the center of the platform. Figure 1-8
shows the correct position of the wheels. You must make
sure that the wheels point as straight as possible during the
mounting process.
Each of the motorized wheels is held to the platform by
four 2-inch 1/4-inch-diameter bolts. With the wheel point-
ing as straight as possible, take a pencil and carefully mark the
location of one of the four mounting holes in the wheel’s
frame on the platform. Remove the motorized wheel and drill
a 1/4-inch-diameter hole where marked. Now replace the
wheel and realign the hole in the frame with the hole now in
the platform. Take one of the eight bolts and insert it through
the wheel’s frame and out the top of the platform. If the bolt
does not go through the hole in the platform easily or after it’s
inserted the motorized wheel is no longer straight, remove the
wheel and redrill the hole in the platform slightly larger. The
play in the hole will allow you to shift the wheel’s position.