Another zigzag bites the dust!!!!

[Negundo]

hahahahahahaha:corkysm21:

 

I don't know, I cant believe how many people I've talked to that had the first one, and were at the front of the line for the second.

[david shaw]

It would put a hurtin on the hitch cord biz were they to become mainstream ;-)

[treequip]

I'm calling bullshit on 28 000 zig zags sold

 

Maybe they are counting all the first series that had to be recalled in that statistic.

[carlos]

my turn now! well the zig zag was great for the short ten hours i climbed on it before the top link cracked the same as the others did. i barely used it and am a fairly careful climber and not heavy on gear, so as far as i now see it there not fit for perpouse. back to the lockjack for now i think.

carl

[Backpain]

It looks like the crack comes from the upper edge of the pivot hole on the top lever linkage.

Its highly possible that this is a point of maximum load (probably during decent or shock loading). It also looks like the linkages are constructed from laser cut sheets (This could be incorrect, they could be forged) However, if they are manufactured from laser cut sheets there are a few things to consider during the design process. Metal sheets are like timber in that they have a grain and if the linkages are cut with the grain going up the point of maximum load this needs to be taken into account. Also laser cutting can leave a rough and brittle edge where cracks can propagate from. One other consideration which can only be determined by extensive calculations and testing is fatigue. That's why I use a bit of rope with a knot in it!!!!

[Fredward]

I think Petzl need to read 'the face of failure' by Mattheck!

 

It looks like a case high notch stress and an unoptimised notch!

 

Listen to me trying to sound like an engineer

[TKO]

Anyone seen/heard anything from petzl yet? I'm still waiting to see what the verdict is in their July safety update

[carlos]

would be curious to know what they now think, although i have swapped mine for a lockjack now.

carl

[ben lightfoot]

Found this on petzl twitter

http://www.petzl.com/files/all/all/communication-zigzag/ZIGZAG-information-230714-EN.pdf?utm_source=facebook.com&utm_medium=petzl-page&utm_campaign=zigzag-update-jul&utm_content=en

[Backpain]

Found this on petzl twitter

http://www.petzl.com/files/all/all/communication-zigzag/ZIGZAG-information-230714-EN.pdf?utm_source=facebook.com&utm_medium=petzl-page&utm_campaign=zigzag-update-jul&utm_content=en

 

So you need to wait for it to crack before you can retire it.....unless it retires you first