6:24 p.m. on June 12, 2007 (EDT)
>The back up for a munter hitch is a mule knot. I use the munter as a power point tie in.
Interesting. Never heard of anyone tying off with a munter mule as a climber.
When I've used a munter hitch climbing, its for, as you've mentioned, belaying or rappelling especially when I've forgot my ATC (etc). Or, I'll use a munter hitch on a leg loop of my harness to augment the friction of an ATC if I'm rappelling single on a slippery, skinny cord. But as a tie off? Not sure why you'd do that.
>As I am sure you know, the munter is used for belaying and rapping. I use it as a power point tie in knot also with a mule knot. This way, if a beginner climber is stuck on a rappel or climb, you are able to lower the climber down without having to go down after the climber. For belaying, it is easy to tie a mule knot above the munter and escape a belay if needed.
Ditto with an ATC (mule knot off and escape, same same). What I'm curious about, though, is what advantage a munter/mule gives you as a tie in? You'd be lowering a stuck climber off your belay, not your anchor tie in?
Munter/mule is very commonly done by the wet water canyoneers as a contingency anchor. Releasable if someone were to get stuck on rappel. Although, most folks have gone to a figure eight tied off (slick method apparently developed by Stephen Hoffman and is in his canyon techniques book only available in German, methinks).
Strength of clove hitch tested here:
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www.xmission.com/~tmoyer/testing/pull_tests_11_98.html
11/23 Test #6
Pull a clove hitch to failure. The clove hitch was tied around the shackle on the load cell. The other end of the rope was tied with a figure eight on a bight. New 11 mm Blue Water Rope was used.
Result: Material failure at the clove hitch at 5110 lbs.
Discussion: The clove hitch did not slip! We were all very surprised at this. Before drawing any further conclusions, I would like to test this again - on a carabiner instead of the shackle. I suspect the rough surface of the shackle added extra friction to the knot.
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If you look at the book, "Yosemite Climber", you'll see a picture of Dale Bard jugging up and looking at the infamous rurp belay created by Jim Bridwell. Clove hitch on successive rurps.
Anyhoo, sometimes I daisy chain pieces with clove hitches at a belay, for the anchor. Fast and easy. Easy to break down and clean. Easy to take apart when weighted.
Common to see a clove hitch used as an anchoring method to a power point, or, multiple pieces of gear.
I think I recall seeing clove hitches mentioned in the Flourine speed climbing books as the preferred knot for those folks, too. They jug off one, get to the anchor, pop it out, etc. Easy, fast. Have to look at the book again...
Anyhoo...
-Brian in SLC