MOBILE SPELUNKING SYSTEMS are
held together with as many as 3000 fasteners (500 Series). All fasteners
are chrome plated for long wear and rust resistance. A fastener set
consists of a round Robertson bolt, a nut and two or more washers. Two
kinds of nuts are used, depending on their location. Virtually all the sets
use Tee nuts. Acorn nuts are provided to the purchaser to secure the System
in some of its more elaborate configurations, those that require more than
the stability offered by gravity.
As with all fasteners bolts
gradually can work themselves loose. This can happen if the System has not
been maintained properly. Robertson bolts are used to lessen the chances of
vandalism. We ship replacement fasteners anywhere.
All MS Systems are designed in such a way
that there is at least one way in which the System can be configured so that
it presents as long a tunnel as possible for the size of the System i.e. it
uses every section. These tunnels are 16, 54, 128 and 250 feet long in the
200 Series, 300 Series, 400 Series and 500 Series, respectfully. In the
300, 400 and 500 series there are more access/egress to/from the levels than
absolutely necessary. At the same time this provides for more configuration
Doors are not an essential part of
an MS System but they do provide an added dimension. Mazes can be set up to
have only two access/egress points by shutting off others with doors.
Doors are constructed from the same
material as the rest of the System, polyethylene. They are held together
and in place by bands of Velcro. They are designed in such a way that they
can be removed quickly in case of need. Doors are available in the same
colours as the System.