Offering unparalleled versatility, the BigTow winches are
a range of scenery moving winches designed for use in theatres and
other entertainment applications. The patented zero fleet technology
allows the winches to be mounted easily in any position without the
concerns of fleet angle.
 These
multipurpose brushless servomotor winches are designed for use in
fixed theatre installations and for touring productions, for power
flying and counterweight assist, performer flying and moving scenery
across the stage. All BigTow winches conform to BS 7905-1:2001 as
well as the European Machinery Directive.
BigTow
390 Winch
CAD Installation
Layout
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| BT2 Features |
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Loads up to 2500kg |
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Speeds > 7m/s |
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Zero Fleet |
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Quiet operation |
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The BigTow winch consists of two basic components- a fixed "chassis"
which is bolted to a support structure and a moving "carriage" that moves as the drum turns. The rotating elements of the winch are
shaft mounted to facilitate the use of a wide variety of gearboxes,
brakes and drum lengths. This arrangement also allows the optional
use of a load cell, which can provide constant load monitoring.
The BigTow can be mounted in a variety of different orientations.
The ropes can be fed off the drum "through the channels"
or "past the motor". Internal diverter sheaves are available
that can collect all the ropes off the drum and feed them out one
end of the winch, in an array to match a header sheave on a multi-line
system.
The designation BT2-nnn refers to the width of the chassis; there
are 4 sizes in the range at 200, 290 390 and 490mm wide.
The BT2-200 winch will lift loads of up to 300kgf at speeds of up
to 2m/s (the balance of load and speed is determined by motor size
and gearbox ratio). The innovative design enables the self weight
of the winch to be kept to less than 130kg for most configurations,
allowing the unit to be portable.
The graph below shows the loads and speeds that can be achieved from the winches in the range and is based on a supply voltage of 480v. The maximum speed will be slower at lower voltages.
You can download winch general arrangement drawings. Choose a winch variant below.
BT2-200 (pdf)
BT2-290 (pdf)
BT2-390 (pdf)
BT2-490 (pdf)
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