SRT; redirects; force vectors; knots

[Joe Harris]

Hi all,

 

A quick request for your input, if you have the time. I was recently involved in running an advanced climbing workshop, for which I and some others made the handouts below. The handouts have been really popular, and we're now talking about trying to make them into 'living documents', kind of like a low-budget wikipedia for climbers. So we'd really appreciate (constructive) criticism and new ideas from all over the globe.

Single Rope Technique

Working the Angles

Introduction to Redirects

Knots for Arboriculture

 

Any criticism or feedback, please email me at [email protected]

[broadsword]

very impressive mate. just scanned through the srt book and learned a thing or three. nice one.

[Paul Smith]

very interesting ,well done!

[Alinicoll]

Theres a book in there methinks.

[munkymadman]

is that joe who moved to melbourne, with his aussie girlfriend, friends with mike. its jake, if you remember me that it is. looking forward ton an interesting read but my computer doesn't seem keen on it

[BenR]

looking forward to an interesting read but my computer doesn't seem keen on it

 

Same for most of them...

[geoff]

Great site,going to browse that one !

[Tree Access]

Very nice, looks like a lot of work:001_tongue:

 

Just had a little look, I dont think Technora is good for Bridges, wasnt there something about on Treebuzz? Something to do with Technora beeing "self-abraisive"... Where are the experts?

 

And, your Double Bowline is none, I dont know how its called in english, sorry...

[Buzzsurgeon]

Very interesting working the angles, turns new rigging techniques on it's head, using a low fiction pulley with a parallel rope to snatch stems doubles the static load on the pulley and anchor point, by using the old methods without pulleys reduces the load through friction and therefore reduces risk of load point failure! Will we have to go back 20 years and get out the poly prop!!???

[Joe Harris]

Hi all,

 

Thanks for all of your positive comments! Great to be getting a positive reaction, but do feel free to point out where we've gone wrong as well!

 

Just had a little look, I dont think Technora is good for Bridges, wasnt there something about on Treebuzz? Something to do with Technora beeing "self-abraisive"... Where are the experts?

 

And, your Double Bowline is none, I dont know how its called in english, sorry...

 

Max from Austria, you are dead right about the Technora! I will get onto that right now, and it will be revised in the next upload... which will be tomorrow at this rate... Well spotted! I'm afraid I didn't get what you meant about the double bowline... if something has been missed then do let me know.

 

using the old methods without pulleys reduces the load through friction and therefore reduces risk of load point failure!

 

Buzzsurgeon, this really interests me as well. In general I think the effects of rope angle across the point in question are the most important thing about the maths, but when snatching the head out of a 'straight' vertical tree, you are right that you are much better off wrapping as much friction as possible at the lowering point, so long as you don't lose the smoothness of the lowering process... Perhaps some sort of pulley with adjustable friction? Or as you say go back to poly ropes for snatching.

is that joe who moved to melbourne?

 

Yup, you got me. Hi Jake, how's it going? What doesn't your computer like? Is it a problem at the VTIO end?