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Video
Tracking System
The track
is 100 metres of steel ‘I’ beam connected via profiled
plates to Stage Co. roof system. It runs from upstage then curves
behind the PA wings and appears downstage and runs across stage in
front of the rear screen. The ‘I’ beam has a steel rack
attached to its underside. There are 8 tugs that travel on the beam,
(4 stage right and 4 stage left). They are propelled by a pinion drive
on to the rack via a Lenze gear box and Control Techniques motor.
Each tug is designed to suspend 2 tonnes of load from it, in this
case 22 video panels. A wind brace consisting of two ladder beams
runs vertically down the back of the video panels and connects to
a lower guide rail. Power and signal to the tugs is provided through
cables festooned onto the track and dragged around on trollies by
the tugs themselves.
‘Koons’
Back Drop
The back drop
consists of 15 vertically deployed PVC panels, each are 5 metres wide
x 25 metre drops, digitally printed with Jeff Koons artwork. The system
is designed so that each panel can be raised using a winch built into
the panels touring box, guided between custom built tracks using a
standard yachting sail deployment system, and then retrieved by a
pinch roller pulling the panel back into its box keeping it taught
against the winch. The box to take the panel, winch and pinch drive
is 5 metres x 2.2 metres x 0.75 metres. This allows 3 boxes to be
stored along side each other across a truck.
Lighting
Pod’s
There are
8 light pods that travel vertically from stage level to the roof header.
Each pod carries 2 x ‘X’ spots and 1 x VL241C, and travel
on a custom carriage guided by a vertical track between the back drop
panels. The track is designed to quick fix to Stage Co. vertical truss
support. Each pod is driven by a toothed belt looping over a top pulley
and down to the gear box and motor dolly at stage level, and terminating
back at the pod. Cable management is gravity fed into a hopper on
stage.
Control
The control
for the video track, back drop and lighting pods is centralised to
a PC via rack mounted Control Techniques motor drive units. The system
allows millimetre precision positioning and variable motor control
for speed and ramping. Touch screen programming allows for fast install
of cues by the show operator for the 31 axis of movement.
Video tug
speed - 1 metre per second
Back drop deploy speed - ½ metre per second
Light pods speed - 2 metre per second
Tomcat USA Inc. supplied the roof header fascia for the stadium shows
and the grid, light pods tracks and pods for the arena shows. A mobile
workshop was provided for all suppliers use in Toronto and Boston.
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