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           10     Masterpeice 1 • Stair-Climber



                  Building an Alternate Wheel Set


































                  If steering is deemed necessary, one could re-engineer the tri-star wheels by adding tri-
                  plate support on both sides of the wheels instead of just a single drive side.The chassis
                  would have to be modified to accommodate the wider wheel sets, and it would now
                  make sense to use an RCX for a handheld power source.The control inputs could be
                  either from an array of touch sensors or possibly a pair of rotation sensors configured as
                  left and right joystick style inputs.A version of the Stair-Climber built with the Alternate
                  Wheel Set sub-assembly would look like Figure 1.6.
                  Figure 1.6 A Version of Stair-Climber Built with the
                  Alternate Wheel-Set Sub-assembly
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