Around the Room Layout Entrance - 4
make sure the trackwork fit with the fixed roadbed on either
side, I laid a continuous piece of plywood sub-roadbed
across the entire aisle gate area, and secured it to the fixed
benchwork on both sides. I placed supports under it and
secured it in place with glue and screws. I only cut the mov-
ing parts of the sub-roadbed free after ensuring that all sup-
ports were in place.
To eliminate the possibility of interference of wood on wood, or
rail on rail, I used a cam action when cutting the sub-roadbed.
Instead of having an arc centered on the hinge pins, I placed a
tripod 3” out in the aisle and marked a circle at the open end
with the circle center offset by that 3”. I used a jigsaw to cut the
plywood sub-roadbed in a straight line at the hinged end, and on
the cam action curved line on the open end. Once these cuts are
made, the gate can be opened, closed, and checked that nothing
binds or interferes with smooth operation.
5. Underside of gate.
5
6
6. Detail of shimmed rails and roadbed.
7. The gap beneath is
big enough for a “crawl
under.”
7
MRH-Feb 2013
