Rider Arrival Speed; Rider Weight; Redirection Line Ratio - HEADRUSH ZSIR150-20A Installation, Operation & Maintenance Manual

8.3 Rider Arrival Speed

Rider arrival speed is unique to each zip line installation and is a factor of line slope, zip line length, rider
weight, rider descent position, wind and friction. It is necessary to know the acceptable minimum and maxi-
mum rider velocities prior to configuring the zipSTOP.

8.4 Rider Weight

Suitable rider weight ranges will need to be determined by individual zip line operators. The zipSTOP Brake
unit will accommodate riders between 15 and 150 kg (33 and 330 lbs). It is necessary to know the acceptable
rider weight range before configuring the zipSTOP.

8.5 Redirection Line Ratio

The Redirection Ratio is the most influential factor in the braking characteristics of the zipSTOP. The Redirec-
tion Ratio is the ratio between the Brake Trolley travel and the zipSTOP Braking Line extension.
The Redirection Ratio is achieved by passing the Redirection Line around a series of pulleys. This alters the
ratio of Brake Trolley travel to Braking Line extension, allowing the installer to tailor the braking distances and
deceleration rates, accommodating a wide range of arrival speeds and rider weights.
ZSIR150-20A - THIS PRODUCT CAN ONLY BE USED WITH 1:1 REDIRECTION SETUPS
The zipSTOP IR (ZSIR150-20A) is NOT compatible with external redirection setups in any way. Installing
a redirection setup with the zipSTOP IR can create a very dangerous set of braking conditions that could
result in abnormally abrupt late braking.
Various Redirection Ratios are possible:
ƒ 1:1 Ratio
‚ MUST be used for model ZSIR150-20A
‚ Can be used for model ZS125-08
ƒ 2:1 Ratio
‚ Can be used for model ZS125-08 only
‚ CANNOT be used for model ZSIR150-20A
ƒ 3:1 and higher ratios – contact your zipSTOP Distributor, model ZS125-08 only
The recommended configuration orients all elements (zipSTOP Brake Unit, Redirection Pulleys, Brake Trolley)
in the vertical plane.
When higher Redirection Ratios (3:1 and higher) are employed (for model ZS125-08 only), retraction force is
reduced and a manual reset of the Brake Trolley will be necessary.
ALWAYS USE THE SPECIFIED REDIRECTION LINE
Failure to utilize a Redirection Line of specified strength and quality can compromise zipSTOP brake opera-
tion, resulting in equipment damage, serious injury or death.
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