... one unit apart on a shaft To provide a total stroke of unit, the axle must be connected one half-unit from the drive shaft There is a special TECHNIC crank piece that is made for a half-unit offset, ... cam is one part that can be used to provide a half unit offset, while other parts include the 1x1 beam with a hole, or 1x2 beam with two holes, or the plate with one bump in the center 314 Robot ... several mounting holes at different spacing, and three of these holes just happen to be one half-unit apart Two cams must be used because the width of an axle is greater than one halfunit, so the...