FRACTIO - BACK UP SPLIT SEWN LOOPS
FRACTIO - SEWN LOOP BACK UP SPLITS
- Structure: double sewn loop shortly distanced (2 cm distance);
- High-Tenacity: made in Germany (GUTERMANN) polyester yarn;
- Inner diameter: 3 cm;
- Minimum Breaking Strength: keeping between 80% and 100% MBS of webbing's original MBS;
- Compatibility: available for all 15-26 mm webbings.
- Connectors compatibility: 8MM OVAL QUICK LINKS or larger.
*REQUIRES THE ACCOMPANYING PURCHASE OF ANY LONGLINE WEBBING.
If you are not happy with your purchase you can always return the product
FRACTIO - SEWN LOOP for the distribution of the back-up
The FRACTIO system allows you to connect the back-up (secondary) to the main salckline in different spots along the whole slackline length.
This is has been designed to reduce the total fall height of a potential back up fall and reduces therefore the shock load on the human body and your set-up.
This precaution (safety-system) is mandatory for slacklines longer than 100 m, especially in case of using webbing as a back-up (and not a static rope).
Compatibility and position
The FRACTIO SEWN LOOP is consistent with 8MM OVAL QUICK LINKS.
We suggest to choose the amount of FRACTIO LOOPS based on your total slackline length:
FRACTIO LOOP every 25 meters on a line < 100 m;
FRACTIO LOOP every 50 meters on a line > 100 m.
Safety, warnings and responsibilities
This item can not be considered as PPE (personal protective equipment) gear.
Slackline and especially Highline practice hasn't gotten any specific law regulations yet, concerning gear or set-ups, thus we can't guarantee our product's integrity for highlining.
Our gear has been tested in external laboratories and internally by our company.
The results have no legal value, but aim to ensure the items maximum safety.
The user has the responsibility to choose the right gear for the right situation, judged through competences of an expert slackliner.
Hi! Does the 50 meter longline kit come with webbing that has 2 sewn loops? Thanks! SIGMA is an element of statistical calculations, which allows to display a products’ guaranteed strength value throughout its manufacturing process. Therefore, it is related to product safety.
During the testing process, the greater the differences between the 10 recorded values, the higher turns out the sigma value.
For example, for 10 carabiners tested, their ten recorded values are usually different and not the exact same:
24,9 | 25,9 | 26,2 | 25,6 | 25,8 | 24,7 | 25,5 | 24,7 | 26,0 | 25,7 kN
So which value to take into account to display the MBS (Minimum Breaking Strength) value?
We first calculate the average:
(24,9 + 25,9 + 26,2 + 25,6 + 25,8 + 24,7 + 25,5 + 24,7 + 26,0 + 25,7) / 10 = 25,5 kN
We then calculate the variance:
24,9 - 25,5 = - 0,6 (-0,6)2 = 0,36
25,9 - 25,5 = - 0,4 ( 0,4)2 = 0,16
...and so on for the 10 measured values.
We add those 10 results:
0,36 + 0,16 + 0,49 + 0,01 + 0,09 + 0,64 + 0,064 + 0,25 + 0,04 = 2,68
And we create the average:
2,68 / 10 = 0,268
The variance is even to : 0,268
SIGMA (standard deviation) = square root of 0,268 = 0,5176
The maximum value displayed on the carabiner would be:
average of 10 carabiners = 25,5 kN
SIGMA = - 0,5176
Displayed Value = 24,0724 kN
What you should know in particular about the 3 SIGMA safety margin?
We use the 3 SIGMA method to calculate the MBS.
We multiply the SIGMA for 3 (this is why it is called “3 SIGMA”) to boost the prudency in the MBS calculation.
Taking the 10 previous carabiners as an example:
The average of those 10 carabieners is 25,5kN
3 SIGMA (3 x 0,5176) = - 1,5528
Displayed value = 23,0472 kN
Our choice aims to maximize the safety of our users while using our products.