Webbing false crotches

Tom Dunlap

Here from the beginning
Administrator
After seeing false crotches a number of years ago I made my first one. Taking some three strand rope I spliced a round metal thimble in one end. For the large end I used a plastic thimble and spliced a small figure eight. Soon after that I saw someone's FC with a biner and pulley setup. This is a much more flexible system.

New Tribe started to make variations on the FC. I bought a couple of the plain eye & eye FC slings. In the picture you'll see that they came with large eyes. My preference is for very tight eyes to keep the biner and screw link oriented in the right direction. The NT sling has the original size eye on the biner side. On the screw link side you can see the yellow arrows for my stitching. There are three lines of stitching to make a tight eye and a box to sew the large eye flat.

The yellow lines and arrows are my stitching.

The next itteration is a pretty much homemade FC. The basis is a 1" tubular webbing sling. The splice is worked over to one end and tacked in place with a couple of passes of stitches. Leave an eye about 1.5" long. Then make a small, tight eye with more passes. Box or parallel stitch the rest of the eye. Next, I run a line of stitches from the splice to the other end, stopping about 1.5" again. Run another row of stitching on the other side of the webbing. Make a tight eye in the second end like on the spliced end. Finish up by connecting the cross stitch for the eye to the parallel stitching.

The homemade FC has been in use for a while and shows little signs of wear. The stitching that I do has no added strength. For more information on sewing gear take a look at the book, "On Rope" I think the ISA sells it for about $35, pound for pound, one of the best book deals around.
 

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This is the homemade FC.

Yellow lines and arrows are my stitching.
 

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When making my own false crotches, I've come to the conclusion that the thicker and heavier the material (rope or webbing) the better. Light weight materials just encourage the rings/pullies to flip around small branches and permanently Indiana Jones themselves into place!

Taking a sewn sling like the blue one Tom shows and running it a bunch of times back and forth across the Singer will stiffen it up quite a bit.

love
nick
 
Pretty slick Tom. Is the bushing pulley with small sheave diameter/efficiency leverage over turning on bushing, that much more efficient than just bushing on pin of clevis?

i maid someone an el-cheapo False Crotch/Friction Saver(?) oncet from 5/8 3strand and 2 metal, 'teardrop'(?) rope thimbles. The oversize thimble was for a 5/8" line, and allowed an overhand knot in 1/2" to slip thru it and jam in the 1/2" side. Stiffened and weighted as Nick refers too, by running the eye splices longer, and wrapping with yellow electrical tape on 1 side and red on the other. Ain't seen the guy i maid it quiet awhile. Also, the 2 thimbles had larger than the 1" support area for climbing line; than afforded by the 2 1/2" rings in store bought model (and mine more friction too quite fairly i'd imagine).

Eyesplices more tappered and carrying load down the length of the line more properly to secure bitter end, instead of at leveraged angle of conducting force perpendicular to line device in knot to bind bitter end from escape. Each (splice and knot) using the same strategy to use 'standing part' force (to stand) on the 'bitter end' to secure. Most splices feeding directly down the length of the line to secure bitter end, not choking crosswise to line axis at a leveraged angle like knot to secure bitter end; ummm as Nick would say! /forum/images/graemlins/ahhhhh.gif
 
Hé Tom,

This is the FC configuration we are using.
It's made of samson tenex cous it's flexible and it sets nice to the bark (if you use rope that is to stiff it wil eat into the bark in this config).
On one end of the tenex is an ART pulley, the ring is attached by a Dyneemaa sling using a prussic. At the other end is a little harp that you put onto the climbing line on the side were your prussic hitch is on your climbing line.

With this FC your friction is almost zero.
 

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Re: Mr Spotter,

How's this (see attachment).
/forum/images/graemlins/cool.gif /forum/images/graemlins/smile.gif /forum/images/graemlins/tongue.gif /forum/images/graemlins/wink.gif /forum/images/graemlins/santa.gif /forum/images/graemlins/burnout.gif /forum/images/graemlins/icon314.gif /forum/images/graemlins/icon12.gif /forum/images/graemlins/icon310.gif /forum/images/graemlins/jamminz.gif /forum/images/graemlins/rolleyes4.gif /forum/images/graemlins/shakinghead.gif /forum/images/graemlins/sniffle.gif /forum/images/graemlins/wavzing.gif
 

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Re: Mr Spotter,

Hé Frank,

I am about to update the KPB-ISA Dutch chapter website. Do you want a Graemlin on the spot in the pictures were your face should be /forum/images/graemlins/rotflmao.gif.

love you too:-)
 
Re: Mr Spotter,

[ QUOTE ]
giv'us a brake with the Graemlins /forum/images/graemlins/tongue.gif

[/ QUOTE ]

How about give us poor folks stuck on dialup a break from overly-large "avatars" which get displayed at only 80x80 anyway?

Attached here is a thumbnail version of your current one, next message will have an alternate.

Glen
 

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Re: Mr Spotter,

I assume the most excellent original was in fact yours...

Glen
 

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Re: Mr Spotter,

Thanks! :)

I'm no dial up but it doesn't seem to bog down from the avatars. Attachments that aren't scaled down to 72 pixel density and around 900x900 size unrole painfully slow. the larger attachments aren't any clearer than the smaller ones either.

It is truly amazing to be able to post pics and communicate with the Internet. What a great tool!
 
Re: Mr Spotter,

I'm looking at another gear hauler. I can't find a US vendor that handles the Beach Rolly. At first I thought that you meant that I should have a boat/canoe. I've got a canoe and touring kayak but I still haven't found a way to use them for work. Too bad that would make them tax deductible :)

Why did you go to work on the water? There has to be a story here...
 
Re: Mr Spotter,

a friend of mine has a very small island on a lake here. sort of a recreational get away, its about 4 meters wide and about 50 long. If the trees get to big here and fall over they would take a good chunk of the land with them. The ground is very soft and of coarse wet, so it does'nt take much.

it's a fine line between the trees keeping the island together and destroying it.

so i had to remove a few poplars and reduce a few more. sorry no pics. not really the kind of work you want to document, but hey.

in return i get a long weekend at his batch with my girlfriend :) swimming, sailing, campfire!

good deal i rekon....
 

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