Marling/Marlin Spike on SRT for dDRT.

[rfwoodvt]

I'll admit to being lazy and not searching for this on the boards...

I'm starting to learn the SRT stuff especially in regards to using a dDRT system attached to the SRT once I get into the working height.

I have read several references to putting a marling/marlin spike under the ascender or prussic or whatever it is that you run your dDRT pulley off of. If I understand correctly that prevents the dDRT pulley from sliding down unexpectedly.

So, what exactly does the spike do and how is it installed? Pics would be very helpful if you have any.

ThanX!

 

[Fairfield]

All the spike/hitch is for is to act as a stop on the line. Also if the slipping is your concern you could just apply a mid-line knot. I guess I can see the woory of your anchor on the SRT sliding when you take your weight off of it, but if it was me I would just apply a hitch above whater is your grab and call it a day. This way it can be applied on the ground and you dont have to worry about re setting it every time you move.

 

[Tom Dunlap]

When I first heard marlin and spiking used in a tree climbing context I couldn't understand what was meant.

The syntax is wrong...although I did understand the application. I would never want a marlinspike anywhere near my climbing system.

What's meant is to marlinspike or 'spike in nautical parlance. But what is meant in this application is neither.

Adding a stopper is what arbos more commonly say.

 

[Fairfield]

Ya, it just does not sound like a good idea, it's more ment for holding sails in.

 

[rfwoodvt]

I kinda assumed that we weren't talking about the true marling spike.

I've only seen the anti-slip thingy from a distance and it looks like as often as not a carabiner is used.

I first saw it used at the Geezer's climb and it appeared to be a requirement for using a dDDT off of an SRT access line.

Anyhow I understand it's purpose just wondering what is the most common/effective method.

 

[Fairfield]

I just use a Gibbs on the SRT and run my DbRT off of that.

 

[davej]

[ QUOTE ]

So, what exactly does the spike do and how is it installed? Pics would be very helpful if you have any.


[/ QUOTE ]

I think what they mean is to put a slip knot in the rope below the tie-in point and snap a carabiner through the loop. See the Wikipedia photo.

 

[Tom Dunlap]

[ QUOTE ]
I just use a Gibbs on the SRT and run my DbRT off of that.

[/ QUOTE ]

you should put some sort of stopper under the Gibbs. An overhand on a bite is simpler and I feel more secure than a marlinspike hitch with a biner clipped through it. Sometimes there is an affinity for overcomplexing things. Why, I don't know...

 

[treebing]

with two ropes, a carabiner cliped through a slip knot and around itself is easier than an overhand knot because of the weight of the rope. with srt, i like a butterfly as a stopper. probably because I always liked tying butterflys.

 

[rfwoodvt]

So basically all it is is a slip not with a biner through the loop and clipped around the dangling SRT line?

 

[Tom Dunlap]

That's right, Rick.

 

[Fairfield]

If you are going thru all this extra tying, why not just put a hitch above? Just seems to make more scense.

 

[Colin]

dude read what has been wrote. you obviously don't know chit. work ddrt off a gibbs on srt? the stopper is to act as a safety in case the friction hitch the climbing system is hanging off of starts sliding due to dynamic movement while moving around in the tree.

 

[Fairfield]

[ QUOTE ]
All the spike/hitch is for is to act as a stop on the line. Also if the slipping is your concern you could just apply a mid-line knot. I guess I can see the woory of your anchor on the SRT sliding when you take your weight off of it, but if it was me I would just apply a hitch above whater is your grab and call it a day. This way it can be applied on the ground and you dont have to worry about re setting it every time you move.

[/ QUOTE ]

Jeff, take a breath. I have already prior to any other comments stated I understand why. From using this kind of setup in many diffrent ways, I have a good understanding of how it will work/react. The main issue for sliping comes from taking weight off the grab on the SRT and then quikly applying weight back on. Also you can say that if you fall it can slip also.... that is kind of a weak statement thou. My thought and prior use of the hitch above is to stop any sliping from happening. After getting into place with where you want to start ddrt, load the hitch and thier should be no problems (I say should because there is no promise in anything).

 

[Fairfield]

Jeff lets try to keep this topic drama free on both are ends. Its a good topic and I think some good ideas can come from it.