SRT #8: Three Situations for a Basal Anchor
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- Опубликовано: 28 сен 2024
- SRT can be executed with either a Canopy Anchor or a Basal Anchor, whereby the anchor is placed on the BASE of the tree. This video explains the three situations where JRB would consider using a Basal Anchor. Related Videos:
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DISCLAIMER: Viewers assume responsibility for their own safety. This video is provided for demonstrational and informational purposes only, and is not considered advice nor instruction. Climbing and related knot tying activities are dangerous and should be performed only with appropriate training, supervision and protective equipment. The author disclaims responsibility for the clarity, comprehensiveness and accuracy of the content, as well as all liability for accidents or injuries incurred. - JRB Tree Climbing LLC
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Thanks John. As always, very informative, and I learned something!! Good luck this season!!!
You're welcome. And when it comes to luck... let's just say I have been blessed with enough luck already when it comes to hunting in the conventional sense. The only luck that really matters is having days and years to enjoy my time in the woods. Cheers
There are sooooooooooo many different option for basal anchors. John, don't you think it would be prudent to teach your viewers to always place an alpine butterfly above the basal anchor so that a an injured or scared climber can be lowered easily using a second line or a hitch-based MRS and a pulley? Either that or maybe a figure 8 descender/friction hitch backup lowering system? But now we're getting a little too fancy. I suppose a rescuer could tie a six coil prusik above your basal anchor and use that to anchor and lower a climber down with a second rope if need be. But a quick alpine butterfly within arm's reach is so easy and so much better. Is there some practical reason why you don't recommend placing the AB above your anchor? Maybe I'm viewing this from the wrong perspective. Enlighten me, oh wise one lol The AB above a basal anchor in the industry standard for arborists/tree climbers. But I know you saddle hunters roll a bit differently...a bit rogue as it were lol
Hey. Thx for your always educated comments!
1. Let's start with the fact that many arborists claim that a basal anchor is a good idea because it allows the arb to be lowered in the event the arb is incapacitated. There are some big flaws in that logic: The most likely time for an arb to get hurt is in the execution and aftermath of making a cut. The arb MUST have two independent ties to the tree when executing a cut. If one tie is his climbing line, the 2nd is usually a lanyard or flip line. Ok, so when things go wrong and the arb gets knocked unconscious, he can't be lowered until someone goes up to remove his 2nd tie-in. I am not aware of one (properly tied in) arborist who has been saved this way. After all, if he is conscious enough to remove his flipline, then he's conscious enough to rappel. If any unciscious arbs were lowered this way, it implies they were not properly tied in to begin with.
2. In a basal anchor system, when rigging down branches and chunks, it's very common for heavy items to swing towards the trunk. If the line between the basal anchor and the support point in the canopy gets caught by a swinging chunk, it's going to transfer a potentially dangerous amount of energy directly to the climber. I believe that as soon as they get up into the canopy, and before rigging anything big, they should switch over to a canopy anchor.
3. This topic has been discussed in some arborist forums that I recall, and the wiser members of that discussion said that they only use a basal anchor when they can't set a canopy anchor.
4. Hunters don't operate chainsaws and are typically alone, deep inside the forest. If they suddenly went unconscious, the situation is dire because they would invert... and who is calling for a rescue? Nobody. I see no advantages in adding a lowering loop for no audience.
5. Remember, most hunters are climbing trees without being tied in at all. And they fear complexity. I don't see an advantage in giving them another knot to tie when there's no reasonably foreseeable time that they would need it. Adding that complexity might dissuade them from rope climbing at all.
6. If I did put something above an anchor to lower me, it would be a Longhorn Agile Hitch on the line instead of an AB. If the climber is very close to the crotch, and the anchor is 6 or 7 ft off the ground, when lowering, the AB would hang up in the crotch just before the body reached the ground. A Longhorn Agile would auto tend those last couple of feet.
7. Yes, there are other options for a basal anchor, but my audience already knows the JRB hitch and the Maverick hitch. They are fantastic in this application. There's no good reason for me to give them yet something else to remember.
Our job is to challenge the norms and challenge the assumptions, and provide the best ideas we can come up with. Cheers.
@@jrbtc Thanks for the comprehensive response. Yes, I'm aware that an Alpine Butterfly is only going to work if the climber has their flipline or lanyard disconnected. But you're also assuming that all injured climbers can rappel to the ground just because they might be able to undo their lanyard/flipline.
There could be a situation where a climber cuts off some fingers on one hand, but can use the other hand to undue their lanyard. At that point, their main focus will be on applying compression to their severed fingers to stop the bleeding and they might need help descending from the tree.
Additionally, not all serious accidents are the result of a chainsaw. What if a climber goes on a limb walk, their rope is at a high angle, and they lose their footing before they can lanyard in at the tip. Maybe this climber swings back into the stem and becomes concussed. Now we have a situation where the alpine butterfly would be extremely useful in lowering this unconscious climber who has no lanyard on.
Additionally, a climber -- maybe a saddle hunter -- might fall off their stand while adjusting their lanyard with too much slack in their primary system, resulting in a serious fall. Since you guys don't wear helmets, this person might flip upside down and lose consciousness from hitting their head on something. A fellow nearby hunter can quickly lower them to the ground with the AB and a second rope.
Your argument is basically that you don't need the AB because a) it is unlikely that it will ever be used and b) a basal anchor should be immediately switched to a canopy anchor and c) hunters don't use chainsaws and are often not tied in.
First of all, I always try to use a canopy anchor wherever possible and, when I do use a basal anchor, I always have an AB on it even though I don't use a saw; I'm a rec climber. But typically will use a lowering device as my backup, so the AB isn't needed except for maybe a stopper knot.
Canopy anchors are definitely superior to basal anchors, but sometimes I climb on both. I get the easy shot and easy access wtih my basal anchor and then use a second rope to create a canopy anchor once I reach my desired TIP. I will keep the basal anchor as a backup or a as a way to triangulate my work positioning.
Here's the funny part, though. I typically climb alone and so, if I ever needed to get lowered down, I would need to call for help and so that's why I usually just do the AB or a lowering device as just a precaution.
Also, if a climber does enough redirects with a basal anchor, then lowering them might be next to impossible.
Anyways, I agree with you. I see your side of all of this and understand why you aren't suggesting that anyone use an AB above their basal anchor. I use a canopy anchor pretty much every chance that I get, but the arborist community is always teaching the importance of an AB and so I sort of bought into it. But there are definitely a lot of reasons why it might be unnecessary or pove to be useless.
Definitely no telling you how to teach your community, John. I agree that the AB, especially for saddle hunting, where there's no ground crew, is pretty pointless. And I agree that switching to a canopy anchor once up in the tree is the best approach. I believe canopy anchors are always better due to force multiplication by basal anchors and because they are simply easily to create redirects with.
Anyways, I hear you and I'm in agreement. The best way to stay safe in a tree is to always be tied in twice whenever possible and to keep slack in any system to an absolute minimum. And to be proficient in whichever climbing system you are using. A more practical skill to learn is how to rappel down using a munter or a Figure 8 descender should your primary climbing device fail. And I see you teaching people how to rappel with munters all the time. I prefer Figure 8s, though, because they don't twist your rope up as much.
I'm just babbling now, John. I AGREE WTIH YOU! Good talk!
John,
What about a saddle hunter’s hitch for a basal anchor?
I did some more testing and when we consider that a basal anchor might be subjected to a lot of cyclic loading as the hunter sits and stands, the SHH is more likely to become destabilized than the JRB Hitch. And so I can't recommend it. Thats different than a manually set canopy anchor situation, where it's always visible to us.
Thank you!
Good stuff to know!
Have a great day!
@@SteveMcQueen-bx4hu thx!
Clark Amy Gonzalez Helen Walker Helen
@WilliamEastland-g4r if you are trying to tag your friends, I believe you really just need to send them the link. I don't know that tagging works on RUclips like it in other apps. The link:
ruclips.net/video/itlbs3M6WKk/видео.htmlsi=kQ7D9jqMGXdFmbv6
@@jrbtc Never seen anyone try and link their friends this way. Two separate people did it lol Kind of weird. I tried explaining to the other person how it's done.
Just curious John, you mentioned the maverick hitch , but would you/have you used a JRB cinch as a basal anchor
@seabeebillm JRB Cinch is s fine choice too, but always go around the tree twice. Typically, a climbing "system" would either have NO JRB cinch (like here on the Universal system) or have one on both sides of the system (a hitch climbing system). If the latter, we wouldn't generally use it for srt. And so you would likely just build a JRB cinch at the tree. And of course you wouldn't need the little tether between the Carabiner and the Moose hitch for a basal anchor.