Description
Spring Brake System: Zipline Spring Brake, to be used as primary and secondary brake (emergency arrest device, EAD) for both high and low speeds with high loads. Tested for speeds up to 80km/h, resulting in a safe and comfortable braking situation.
Each Zipline spring brake section consist of 1 spring and 1 nylon spacer = approx 30cm.
Spring packs have been found to be an effective EAD. A spring pack is made up of multiple springs which connected by plastic spacer blocks. The number of springs necessary for each zip line EAD depends on rider arrival speed, weight range of riders, what type of primary brake is used as well as other variables. Only use spring packs designed specifically for zip line braking.
As an example the following calculation for the size of the springpack:
| Incoming speed (km/h) | 30 | |
| Spring brake used as: | Primary Brake | Secondary Brake EAD |
| Springs needed | 20 | 15 |
| Spacers needed | 21 | 16 |
| Springset length (mtr) | 7 | 5 |
All zipwires have a primary braking system to stop the rider at the end of the line. But beyond this measure, zip lines should also have an emergency or back-up braking solution. An emergency arrest device (EAD) is just what it sounds like – it is the thing that would stop rider in an emergency situation where the primary braking system doesn’t do its job. Read all about EAD devices in our whitepaper.
Spring packs have been found to be an effective EAD. A spring pack is made up of multiple springs which are approximately 30cm in length connected by plastic spacer blocks. The number of springs necessary for each zip line EAD, depends on rider arrival speed, weight range of riders, what type of primary brake is used as well as other variables. Our spring packs are specifically designed for zip line braking.
Designers/installers should verify with zip line spring pack manufacturers to ensure the product is properly designed and installed to provide acceptable emergency braking in accordance with EN, ACCT and ASTM. When designed and installed properly, a spring pack can help to create a fail-safe braking system. It will consistently and effectively stop a participant in a safe condition.
Spring Brake – EAD- Emergency arrest device
- Provides smooth and effective emergency braking when the correct number of springs are used;
- Easy to install, inspect, and maintain;
- Corrosion resistant due to the stainless steel springs and plastic spacer blocks;
- Easy to add or subtract springs to ensure proper EAD function;
- Easy installation (retrofittable) on existing zipline installations.
The number of springs and spacers depends on the landing speed, ask us and we help you with numbers.
How to install the springs on the zipwire?
Expert Information regarding Zipline technology
Interested to read more about Zipline technology and Expert opinions?
- Zip Line Design: Components for a Complete System
- 9 Zipline Mistakes You Don’t Know You’re Making
- Pros and Cons of Different Zip Line Brakes
- Expert Tips for Zip Line Brake Installations
- White Paper on Zipline Emergency Arrest Devices (EAD)
- Does your zip line need an emergency arrest device?
- MAG Brake Trolley, the Magnetic Self-braking Zipline pulley
- The Science of Eddy Current Magnetic Braking
- Why Zip Line Trolley Bearings Matter
- Whitepaper: Zipline Braking Dynamics
- Zip Line Installation: Give them the Best Ride
