How do the SuperTrack sections interlock?
It may be helpful to refer to the SuperTrack picture in understanding the following answer. Side to Side – The Lane 1-2 section slides horizontally into a Lane 3-4 section (same for Lane 5-6) and is aligned over the entire length by an ‘E’ profile on the Lane 3-4 section and a reverse ‘E’ profile on the Lane 1-2 section. These just slide together, they don’t snap or have any interference or integral locking mechanism. In addition to the ‘E’s on the edges of the track, there are ‘T’s under the middle of each lane. They act to stiffen the track section and are further used in the interlock as described below. End to End – A small tab which is glued onto the extension engages the slot in the previous section formed by the ‘T’ and the outside ‘E’ or Reverse ‘E’ profile to insure perfect alignment for up/down and left/right motion. For end/end motion, a strong 1/8″ nylon cord is connected from the joiner at the end of the track to the weighted base under the start. A simple tensioner (like