[shawny963]

It is really quite simple, it works the same way as a series of pulleys except for the fact that we use hdpe bushings with slots for the spectra to run through instead of a pulley. So as we pull down on the line in the innermost tube it pulls the end of the middle tube up until it comes to a hardstop. Then the spectra runs to the top of the middle tube, through a bushing which sends it back down to the bottom of the outermost tube, which allows the outermost tube to be lifted also. This can all be achieved with one piece of spectra, and they can be pulled down also with the same line.