New Sherrill Cat. ups+ dwns

[RescueMan]

Rollin' Bowline

Originally posted by JonnyHart
Anybody understand that other bowline?

That's a running reverse slipped cowboy (or Dutch Marine) bowline.

Running, because it is used as a choker.

Slipped, as been pointed out, because it's finished with a tucked bight for quick release.

Cowboy, because the working end is outside of the fixed loop.

And reverse because the standing part is the short end and the working end (which is the tail of a regular bowline) is the rest of the rope.

It looks like a very clever and useful knot. I'm going to add it to my bag of tricks.

- Robert

 

[John Paul Sanborn]

Re: Rollin' Bowline

Originally posted by RescueMan


And reverse because the standing part is the short end and the working end (which is the tail of a regular bowline) is the rest of the rope.

Is that because we use the knot to run loads as aposed to a static anchor point?

 

[TreeJunkie]

I personally love the bungee tear away saw lanyard, not so much for it's tear away ablility but for it's bungee.
LJ, speaking of having the real clip on an 200t rip out,,, well iv'e had this happen before not a cheap fix, that thing is attached into the gas tank along w/ other things, the saw which this happened to was a total loss, the repair bill was gonna be $400. Yes i know the gas tank doesn't cost that much, but after everything else and the top handle it does.

 

[RescueMan]

Re: Re: Rollin' Bowline

Originally posted by John Paul Sanborn
Is that because we use the knot to run loads as aposed to a static anchor point?

Not sure what you mean there JP, but it's reversed in that what's normally the long standing part of the rope entering the bowline is now the short slipped tail, and what's normally the tail of the bowline is now the long end of the rope which is chokered around the limb.

- Robert

 

[Lumberjack]

Originally posted by TreeJunkie
I personally love the bungee tear away saw lanyard, not so much for it's tear away ablility but for it's bungee.
LJ, speaking of having the real clip on an 200t rip out,,, well iv'e had this happen before not a cheap fix, that thing is attached into the gas tank along w/ other things, the saw which this happened to was a total loss, the repair bill was gonna be $400. Yes i know the gas tank doesn't cost that much, but after everything else and the top handle it does.

I like the bungee also, but I wish it was longer, maybe a foot when extended. When I am stretched out with my left hand, sometimes I will run outa slack.


Which lanyard are you talking about Extreme?

 

[Lumberjack]

Originally posted by TreeJunkie
I personally love the bungee tear away saw lanyard, not so much for it's tear away ablility but for it's bungee.
LJ, speaking of having the real clip on an 200t rip out,,, well iv'e had this happen before not a cheap fix, that thing is attached into the gas tank along w/ other things, the saw which this happened to was a total loss, the repair bill was gonna be $400. Yes i know the gas tank doesn't cost that much, but after everything else and the top handle it does.

I like the bungee too. However I wish that it was about a foot longer.


Which lanyard where you talkin about Extreme?

 

[TheTreeSpyder]

i got my catalog today; very nice, of course.

The drawing on pg.44(center);

Assuming 100% efficiency pullies: Shows 200#, pulling at an angle, into a 5/1 to theoretically equal 1000# i think. i don't think that the 200# fed at an angle to mainline will yield 200# of input. Also, if the man weighs the 200#, i think he'd exert all of it statically pulling down anyway(?); unless pull leg was tight, anchored to Porty, then groundie leveraged perpendicular for high tension feed into 5:1 to break hinge (if faces were meeting).

But mostly; i think that the sling on the load should reach from the backside, through a trench, over the top. Then to leverage force tearoff face against face, you could move load further up than than it is (till backside was under pulley. Presently, i think the system is at a standstill (as hitch point is under upward pull of support position) unless more cut is taken; putting climber close at tearoff; it would be better if the turning radius allowed by the faces, was less than the radius that the hitchpoint allows, in order to force tearoff by leveraging. rather than trying to tear off by lifting 1000# + tearing wood free, with a theoretcial 1000# force.

You could move the top pulley back some to effect possibly, but that would put suspended load nearer to climber. Less load on support over load if climber placed intermediary pulley higher on stem than support pulley if wished while placing support pulley just reach up as high as possible and set.

i think radius of turn for leveraging, steering and forcing tearoff is overlooked a lot.

Or something like that........
:alien:

 

[RescueMan]

I mentioned to Sean Larkin and Tobe Sherrill that the picture of the Munter hitch on page 36 is not a good example because it places the control line against the spine of the carabiner when the load line should be there where the strength is.

The method shown to tied a munter is not the best one since it makes it kind of accidental where the load line ends up.

A better method is to lay the load line first into the 'biner, then make an overhand loop with the control side, giving it an extra half turn as it's clipped into the 'biner. This will place the load line against the spine where it belongs.

Does it matter with a single-person load (using the munter for rappel, eg)? No, but it's a good habit to learn to tie it right so when it gets used for a heavier load it'll load the 'biner where it's strongest.

- Robert

 

[TheTreeSpyder]

Rescue Rob ya come through again...

i guess that in the 20+ or so times i've read about muenter instruction, that is the 2nd or 3rd time i've seen that fine point; and prolly din't always rtemeber it, but i think this reminder and explanation has cured that! Thanx!

i think doing simple things like that right, and impressing that on yourself to do so purposefully, even if in the range of use Rob says it isn't necessary just good practice is very important. So that when things really matter, or in things slightly foreign, you automatically and habitually, quickly set the most maximum range for your self etc. The wider that the carabiner is, the more differance this can make i think.

i pointed out my previous observations before, and don't seek to tear apart the catalog. And there are serious lessons here too i think.

i see similar points of observing pull lines at higest leverage and arc-ing positions; something that i think is important to easily maximizing the scenario by this selective choice of machine command and strength etc.; perhaps saving the day, even when things start to go wrong...

A different point i was wondering on pg.68; the Porty is shown mounted to the fixed end of the eye of the Whoopie sling in upper L.Hand corner. i thought that mounting to the adjustable end was recomended as best, so as not to wear the same point on the sling? Is there a different 'arguement', making the choice of hitching to fixed eye better? Does the longer eye effect this?

Enquiring minds need to know!
:alien:

 

[jamie]

sherrill

daft question would getting a copy of the sherrill cat sent over here be of any use to me....will it tell me anything revolutionary or should i just stick to the uk companies catalogues......stanton hope just sent me their new one.....

jamie

 

[MasterBlaster]

Sherrill doesn't ship overseas?

 

[ROLLACOSTA]

Re: sherrill

Originally posted by jamie
daft question would getting a copy of the sherrill cat sent over here be of any use to me....will it tell me anything revolutionary or should i just stick to the uk companies catalogues......stanton hope just sent me their new one.....

jamie

JAMIE STANTON HOPE ARE A JOKE IVE USED THEM FOR YEARS ..THIS NEW CATALOGUE FROM THEM [STANTON HOPE ] IS WELL OVERDUE THE LAST ONES BEEN ABOUT FOR OVER 5 YEARS..I CAN THINK OF LOADS OF BETTER COMPANIES THAN THEM ..IE www.afwarehouse.co.uk, buxttons ,tree volution,richmonds..sorry tree volution should have been ..trees unlimated...ps ..sorry about caps

 

[jamie]

got them alll

got catalogues etc from most companies....just wondered what was soo great about a companies catalogue. also read that they have wee pictures and what not....

just curious


in fact for harness prices (provided you want a petzl or komet) abby pro seem to be the cheapest


jamie

 

[John Paul Sanborn]

The wee pictures, such as the bo'lin pic someone posted not too long ago, is one of the biggest reasons people over here like the Sherrill catalog.

Not only do they list and show the product, but the will give illistrations on how to use them.

 

[jamie]

ok

thought that might be have been a reason, just curious as to why they were so popular....was tempted to splash out the $10 but if its only special for that reason......hmmmm

jamie

 

[John Paul Sanborn]

It's good enough that several tech schools use it as a supplimentary textbook.

C'mon Sean, send him a catalog!

 

[MasterBlaster]

Sherrill and ArboristSite

Two GREAT combinations!

 

[murphy4trees]

Gotta say.... Sherrill is the most entertaining catalogue I've ever read... That would be any kind of catalogue
I had my buddy that calls himself a stone age climber come over and we talked about this and that as he poured over it...
then out to the backyard and check out the gear bag... he brought the catalogue.. then took the # before he left so he can have it for light reading...

 

[rb_in_va]

I just got the Sherrill catalogue today. Is that RJS with the BS on pg 11?

 

[seanlarkin]

The photo is not Rocky.