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8.6 Possible Configurations (Informative Only)
8.6.1 3:1 RATIO
3:1 installation formats are a unique situation and the following information should be used to develop an
appropriate site plan.
The 3:1 ratio connects the zipSTOP unit to the braking trolley via redirection pulleys and supplementary line.
With a 3:1 ratio the braking trolley travels three meters for every meter of zipSTOP line. This will result in a lon-
ger stopping distance for the rider.
Characteristics of 3:1 ratio setup are:
ƒ Max. Approach Speed = 72 km/h.
ƒ Suitable for high arrival speed.
ƒ Softer stopping force from higher speeds
ƒ Longer stopping distances
ƒ More complex set-up.
A 3:1 ratio is commonly used on zip lines with high arrival speeds and when a longer braking distance is avail-
able. The 3:1 ratio is suitable for approach speeds up to 72 km/h (45 mph) allowing a softer stop after thrilling
high speed runs.
zipSTOP
Primary Anchor
26
Support Wheel
Redirection Line
Secondary
Cable Tidy
Pulley
zipSTOP
Brake Trolley
Support Line
Double
Pulley
Block
Locate Secondary
Anchor Upstream
of Braking Zone
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Secondary
Anchor
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