Mammut Moses Carabiner Failure
while removing my hiking hammock from the trees yesterday I noticed that the spine of the carabiner had bent outward, making it impossible to close the gate.
This pic of both carabiners for comparison:
Join Date: Oct 2010
Location: The Beautiful Black Hills of S.D.
Hammock: WARBONNET 1.1 DOUBLE, DIY BRIDGE
Tarp: WARBONNET BMJ/DOOR
Insulation: DIY DOWN TQ & UQ
Suspension: STRAPS & BUCKLES
wonder if there was something faulty with the carabiner, those are rated higher than what alot of people on here use....maybe you had the hammock strung really tight and it put some extra force on the carabiner? but still it's rated at about 5100lbs so even that shouldn't of done that
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3rd Annual Black Hills Hang planning thread, August 21st, 22nd, 23rd, 2014
Join Date: Aug 2012
Hammock: Dangerbird, (custom) thanks Papa
Tarp: 10x10 DIY
Insulation: DIY insultex.
Suspension: Woopie, UCR
It looks like the gate was open when it bent. I've never seen that before, nothing even close.
Join Date: Aug 2009
Location: Covington, Ga
Hammock: Blackbird 1.0 DBL
Tarp: WB Edge in Spinn
Insulation: Sleeping Bag
Suspension: Clove Hitch
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Join Date: Aug 2011
Location: Brisbane, Australia....and Northern Thailand.
Hammock: Madtree Tarseer
Tarp: Typhoon, DIY Cuben
Insulation: Tarseer all-in-one
Suspension: Slings & Rings
Major Axis 22kn =4950lbs
Minor Axis 9kn
Gate Open Strength 8kn =1800lbs
If the gate was open or you were putting side load on the biner,
your losing almost 2/3rds of its strength.
There's a lot of tension running through your suspension ropes, especially if your a big lad & they're pulled really tight.
Or it could be just a bad biner.
It wasn't a cheap asian copies was it ? ....just joking.
Just checked my hammock set up in the garage, with mini biners ....the wide tree huggers on both ends had slipped under the gate,
holding them slightly open.
Bouncing up & down with the gate open, did nothing,
no flex in the biner. Safe as houses......
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Last edited by ofuros; 10-01-2012 at 00:45..
Join Date: Jun 2011
Location: Sunshiny coast of Oz
Hammock: HH exped asym zip
Suspension: big tangled mess
My opinion, bad biner. Aluminum should have a fairly large elastic range, and so it should return to shape. Mammut may want that one for testing. otherwise, de-rate it with a file or saw, and use it as a keyring.
Join Date: Aug 2012
Location: Snyder, TX
Hammock: DIY 30d MARPAT
Tarp: DIY .74 oz cuben
Insulation: Marmot Mod
Suspension: ISLS with UCRs
There is never any more stress on a hammock suspension than what a man can put on it under live load conditions, regardless of how tight it is strung.
Aluminum does not have very good elastic qualities but will crystal out rather easily compared to other metals. In another thread are pictures of a Ditch clip that broke.
Airplanes are constantly inspected for stress fractures. It's the nature of the aluminum beast.
That was a bad casting and Mammut should replace it, or prove you took a crow bar to it!
Join Date: Jan 2011
Location: Columbus, IN
Hammock: WBRR, Lots of DIY
Tarp: MacCat; Cloudburst
Insulation: HG-UQ, TQ; WB-Lynx
Suspension: Whoopie Sling
With that said, I think the most likely scenario is that the strap held the gate open (as previously theorized).