cobra bracing advice

[Dean O]

trouble is if the loop after the splice undoes itself under normal movement will it hold under failure.

 

in failure the brace will be snatched therefor quickly tensioning itself and hopefully cable extension tightens the splice.

 

I tried to install with a little slack to allow for sail and weight forces during full leaf.

 

perhaps I didn't install with enough slack? so it will tighten if loaded in failure but not be effected by natural movement in windy conditions?

 

or did I give too much slack - i.e.. should it be pre-tensioned? - therefor already gripping. I was under the impression originally that this was not the correct way to install but now I'm wondering.

 

the cable distance is very short, only allowing 8-10 inches of splice before installing the second loop. perhaps this simply isn't enough splice?

[MattyF]

8-10" is not enough I would double that and maybe add more.. Can you not go higher on the anchor stem and lower on the secondary to get more length in the system?

[welwell]

I have installed quite a lot of Cobra/Boa and had one constantly undo itself. I think the problem stemmed from too sharp an angle of the rope entering the splice. I moved the splice further away from the branch (ie made the entire branch loop bigger) and it never came undone again.

 

I've found that to be the case also.

[Dean O]

If I have another problem with it I'll try and get a bit more length to splice with, there isn't much distance between the 'anchor points'.

this may be the problem, unless I hang it quite slack.

 

As others have said, pre-tensioning will likely create dependency which is never going to end well

 

thanks for your input guys.