Wednesday, February 25th, 2009

Climbing: My Favorite Rappel Knot — Figure 9 (video)

Figure 9 is my favorite rappel knot because I believe it offers following advantages:

  • low profile (maybe arguable depending on what you compare it with)
  • quick to tie,
  • stands flat when pulled over a rock,
  • easy to untie when loaded,
  • works well with ropes of different diameters.

Some of these traits are shared by other knots, but no other seems to have ‘em all.  However, I won’t try to convince you to go with it, because I can’t even convince my own husband.  Haha!  Hey, whatever works for you!

People on a climbers’ mailing list I’m on asked about Figure 9 knot, so I made this video (1 minute 55 seconds). If, for whatever reason, you hate Figure 9 knot, please don’t kill the messenger.

About the making of this video:

There was a long discussion on rappel knots on the mailing list. I didn’t follow the whole thread, but noticed that many people expressed difficulties in visualizing a Figure 9 knot. Out of fondness of this knot, I decided to make a video. So while driving home from work, I laid out a plan in my head and visualized every “move”. When I got home, it took me 5 minutes to prepare, 2 minutes to on-sight the shooting, and 3 minutes to cleanup. Inserting the texts using Windows Movie Maker was a 15 minute effort, but it took me most of the evening waiting for the video file to upload. But now I’m getting the system down. It’s so easy to make a video and put it up. That is pretty cool.

References:

http://www.bstorage.com/speleo/Pubs/rlenergy/Default.htm
Animated Knots (119 knots, but missing Figure 9)

8 Responses

  1. Kenton 25 Feb 2009 at 10:23 pm

    Nice. Thanks for making this. I was following the discussion on Rock Rendezvous, but wasn’t familiar with this knot. I’d heard that the tie-in knot that I use is called a Figure-9, or a “Yosemite finish” to a Figure-8.

    [Reply]

    mudworm

    You are welcome. But are you sure the tie-in know is a figure 9??? I’ve never heard such thing! In my understanding, Figure 9 is not about the “finish”, it’s about 8+1=9. :biggrin:

    [Reply]

    Kent

    No, not sure about the name of the tie-in knot… Just what someone told me somewhere along the way… Based on the RR discussion, I’d say it’s likely that my source was wrong and that this is the actual Figure-9 :biggrin: .

    [Reply]

    mudworm

    I have to reply to this one just to make sure the new threaded-comment plugin works well. It seems to be because it allows me to get to the 3rd level. Cool, we can just keep going… :mrgreen:

    Okay, back to the knot. Now that I think about it, it is not impossible to tie a figure 9 as a tie in knot and then do the follow through just like what you do with figure 8. I do not personally know anyone who does it. One argument against it that I can think of is: with figure 8, it’s very easy to visually check the integrity and correctness (10-point check?), but with figure 9, Hmmm… most people probably will pull their hair out trying to figure out if you did it right or not.

    [Reply]

    Kent

    Did you just add that plugin?

    The tie in I use is essentially a figure-8, but instead of tying a double-fisherman’s with the end of the rope, I take the end around the standing part and then tuck the end back into the figure-8…

    Someone told me that’s called a figure-9, but it’s looking like that information was incorrect.

    [Reply]

    mudworm

    I just upgraded the plugin. :-) Oh, I see what you are saying. Yes, many people do that and prefer it over double fisherman’s finish. I sometimes do it too depending on the mood (and how much tail I happen to have to work with). Thanks for clarifying for me that it was not “knot on a bite” but rather “bight” and a bight was not what I thought it was. I didn’t want to say that on the mailing list, but I got misled on the terminology and spelling by someone sitting near me last night. ;-) Anyhow, it was a good discussion. Thanks!

    [Reply]

  2. Allenon 26 Feb 2009 at 9:37 am

    ah…the student, has become….the teacher!

    nice job!

    [Reply]

    mudworm

    More of a teaching assistant. Others do the teaching, and I do the demonstrations. :-)

    [Reply]

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