Equipped To Survive Equipped To Survive® Presents
The Survival Forum
Where do you want to go on ETS?

Page 2 of 4 < 1 2 3 4 >
Topic Options
#287155 - 11/20/17 10:54 PM Re: Knot strength [Re: AKSAR]
Tjin Offline
Pooh-Bah

Registered: 04/08/02
Posts: 1715
Originally Posted By: AKSAR

High angle rescue teams these days seem to favor the ”tensionless hitch” to tie a rope to a tree. The tensionless hitch is clained to retain 100% of rope strength. However, it will not stay in place without a load.


Hmm... reminds me of quick alpine belays/anchors; just wrap a rock once or twice.
_________________________


Top
#287157 - 11/21/17 12:09 AM Re: Knot strength [Re: Tjin]
hikermor Offline
Geezer in Chief
Geezer

Registered: 08/26/06
Posts: 6435
Loc: southern Cal
Or if you are really ancient, you remember when bodies were for belaying....

So where did Creek Stewart get the notion that the timber hitch was the strongest possible knot for an anchor? I may have not heard correctly, of course, but I believe the WC reruns these episodes a time or two, so stay tuned.
_________________________
Geezer in Chief

Top
#287158 - 11/21/17 12:51 AM Re: Knot strength [Re: AKSAR]
haertig Offline
Pooh-Bah

Registered: 03/13/05
Posts: 2000
Loc: Colorado
Originally Posted By: AKSAR
High angle rescue teams these days seem to favor the ”tensionless hitch” to tie a rope to a tree.

Looks like simply a "round turn and two half hitches", an excellent knot that's been around forever but doesn't seem to get much respect. Except this fancy new one has more "round turns" and with a "figure-8-plus-carabiner" replacing the "two half hitches".

If you don't want to mess with a carabiner (like when you don't have one!), but still want something super-secure, you could just make 3 or 4 round turns and finish it off like a buntline hitch rather than with two half hitches. Slip this finishing knot if you want it to be easier to untie in an emergency (or for whatever purpose).

The round turns give you the strength and take the load, so you don't have much tension on the finishing knot.

Top
#287161 - 11/21/17 02:47 PM Re: Knot strength [Re: haertig]
hikermor Offline
Geezer in Chief
Geezer

Registered: 08/26/06
Posts: 6435
Loc: southern Cal
On a couple of occasions where we employed a tensionless hitch, we simply wrapped the tree several times and then anchored the end of the rope to yet another nearby tree,leaving some slack in the line in order to detect any movement in the system. The securing knot could be just about anything - I believe we used a bowline.
_________________________
Geezer in Chief

Top
#287163 - 11/21/17 05:10 PM Re: Knot strength [Re: hikermor]
clearwater Offline
Old Hand

Registered: 03/19/05
Posts: 1031
Loc: Channeled Scablands
Now that's some redundancy!

Top
#287166 - 11/21/17 06:34 PM Re: Knot strength [Re: clearwater]
hikermor Offline
Geezer in Chief
Geezer

Registered: 08/26/06
Posts: 6435
Loc: southern Cal
This was for an overhanging descent into a sink hole near Ashfork, AZ. 248 feet hanging free...Redundancy was welcome! Besides, it worked...
_________________________
Geezer in Chief

Top
#287168 - 11/22/17 06:57 PM Re: Knot strength [Re: hikermor]
Roarmeister Offline
Old Hand

Registered: 09/12/01
Posts: 880
Loc: Saskatchewan, Canada
What was the snowmobile doing in the stream???

Top
#287170 - 11/22/17 10:22 PM Re: Knot strength [Re: Roarmeister]
hikermor Offline
Geezer in Chief
Geezer

Registered: 08/26/06
Posts: 6435
Loc: southern Cal
Short answer - getting wet and rusty.

The show was recreating and critiquing an actual event where the driver attempted to cross a frozen stream - didn't work. They anchored a long piece of webbing to the tree and winched the snowmobile out by affixing the other end around the tread. Basically the machine self extricated, without the driver getting wet....

My choice of anchor would involve a rewoven figure 8, along with multiple wraps around the tree. I love redundancy.
_________________________
Geezer in Chief

Top
#287176 - 11/23/17 01:56 AM Re: Knot strength [Re: hikermor]
AKSAR Offline
Old Hand

Registered: 08/31/11
Posts: 1095
Loc: Alaska
Originally Posted By: hikermor
Short answer - getting wet and rusty.

The show was recreating and critiquing an actual event where the driver attempted to cross a frozen stream - didn't work.


If a rider keeps sufficient speed, it is possible to skim across open water on a snow machine. People sometimes do this to get over a stream or pond. This has even led to a new wave of sporting events called snowmobile skipping, snowmobile watercross, snowmobile skimming, water skipping or puddle jumping. According to Wikipedia, the current over water distance record is 212 km (131.731 miles) by the Norwegian Morten Blien.
_________________________
"Toto, I've a feeling we're not in Kansas any more."
-Dorothy, in The Wizard of Oz

Top
#287177 - 11/23/17 02:02 PM Re: Knot strength [Re: AKSAR]
hikermor Offline
Geezer in Chief
Geezer

Registered: 08/26/06
Posts: 6435
Loc: southern Cal
The driver in this event was not an expert, although an Olympic Greco-Roman wrestler. In the recreation, they demonstrated that smowmobile skids could make dandy improvised snowshoes, although I would think that real snowshoes would be great EDC on a snow machine.
_________________________
Geezer in Chief

Top
Page 2 of 4 < 1 2 3 4 >



Moderator:  Alan_Romania, Blast, cliff, Hikin_Jim 
July
Su M Tu W Th F Sa
1 2 3 4 5 6 7
8 9 10 11 12 13 14
15 16 17 18 19 20 21
22 23 24 25 26 27 28
29 30 31
Who's Online
2 registered (M_a_x, chaosmagnet), 256 Guests and 5 Spiders online.
Key: Admin, Global Mod, Mod
Newest Members
martinw, Birdman1776, tskinner, Abe, Flyingbforge
5255 Registered Users
Newest Posts
Favorite Related Forum
by haertig
Today at 04:53 AM
Cool Helicopter Rescue -- Mt. Hood
by hikermor
Yesterday at 11:31 PM
Relative Costs for Gear
by hikermor
Yesterday at 11:08 PM
Stuff to pick up at your local thrift store
by adam2
Yesterday at 07:47 PM
Eight bight button knot
by TonyE
07/20/18 08:43 PM
Most Recommended Must Have Survival Gear under $30
by quick_joey_small
07/20/18 09:09 AM
Essentials in First aid
by chaosmagnet
07/20/18 12:44 AM
Ridiculous carry - what have you seen?
by chaosmagnet
07/20/18 12:38 AM
Newest Images
Tiny knife / wrench
Handmade knives
2"x2" Glass Signal Mirror, Retroreflective Mesh
Trade School Tool Kit
My Pocket Kit
Glossary
Test

WARNING & DISCLAIMER: SELECT AND USE OUTDOORS AND SURVIVAL EQUIPMENT, SUPPLIES AND TECHNIQUES AT YOUR OWN RISK. Information posted on this forum is not reviewed for accuracy and may not be reliable, use at your own risk. Please review the full WARNING & DISCLAIMER about information on this site.