Positioner-2 (aka Lanyards)

Marden

Marden

Location
Long Island, New York
In a similar vein to the Positioner thread...

I made 2 Lanyards for myself with the following and they work fine for me:

$26.00 Petzl Fixe Micro pulley
$ 6.00 Large Swivel Snap
$ 2.00 7mm cord for capture prusik (4 feet)
$11.00 8mm cord for the lanyard (15 feet)

This works fine for me and was only $45 (money was not the deciding factor).
I plan to increase one of them to about 25 feet to provide more reach.
The 8mm cord I use has a MBS of 3761 LB which is plenty to hold a person, but am thinking of moving up to a larger cord. Maybe 9.5mm.

Why do people feel there is a need to use 11mm for a lanyard ?
 
To be a bit more clear, the ANSI standard also states that a cordage designated by the manufacture as suitable for tree care is acceptable.

Also bear in mind how a positioning lanyard is used!

Tony
 
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Why do people feel there is a need to use 11mm for a lanyard ?

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The weight difference between a smaller diameter line and an 11mm is insignificant in a typical lanyard length. but the hand comfort and gripability (is that a word?) difference is significant.
-AJ
 
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Are you a working arborist Marden? Are you climbing 5-7 days in the week?

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Sirnick,
NO, I am not a 'working' arborist. Professionally, my background is Computer Engineering. Recreationally, I love the outdoors, have been rock-climbing for several years, and climbing trees on my own for a year now. Wish there were some people nearby I could climb with. Over the years, I have collected 10 books on climbing and have read most of them cover-to-cover.

I am probably the only person in my town with multiple chain saws, spurs, and an Alaskan chainsaw mill. Maybe the only one living within 50 miles of NYC. Maybe I should become an arborist, but I probably have a lot to learn yet...

However, when I go up a tree, my life is just as precious to me as yours is, and I take this very seriously. I also have a lot of respect for all of the working arborists and value their information shared on TB.

-Michael
 
Definitely not trying to say my way is better than yours, but climbing day in and day out and holding, grabbing, adjusting, flipping and what ever else I do it my lanyard 8mm would absolutely destroy my hands and arms even 11mm isn't big enough in my opinion. also using the positioner has been a huge step for me, yes it is expensive and the clutches do wear out but it always works, releases under load, i use it single leg if need be and the swivel just tops the cake.
I compare it to a carpenter using an iron pole as a hammer cause it just works, the hammer may cost a bit more but its much nicer to use and does the job better.
 
I put up this post because I want to replace my lanyard with a longer rope and want something easier to grip. This prompted me to see what others are using.

The strength of 8mm on my current lanyard was not a concern since it is short. However, at 20+ feet, the new one should have a higher WLL.

Since there is not a lot of difference in weight/bulk between 10mm and 11mm, I will use 11mm.

-Michael
 
only noticeable effect of a longer lanyard of that diameter would be elongation in some positions?

unless you are using it as a secondary, smaller climbing system which there you will need it to be of the standard 5.4k lbs tensile but of course you should be using a cordage of suitable strength currently as well.
 
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I don't see how because its longer it needs a higher WLL.

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My rationale behind this is twofold for a short lanyard (under 15'):
1- This has been a secondary being used in conjunction 'with' my main rope.
2- Looping the lanyard around a branch and back to my harness, the distance could only be a maximum of 7' away, and always with tension on the line, so there is no real loading concern [to me] from a drop.
3- Trading up to a 25' lanyard and a prusik loop at the end to use for a TIP this now becomes more of a traditional climbing system.

I agree with what you are saying about meeting ANSI standard loading requirements and want to operate under safe limits - this is why I started this thread.

-Michael
 
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