adjustable friction saver

Treespotter, I've been thinking about your set up and wonder why didn't you just prussik the pulley to the FS and keep the steel ring in place?

Would have saved a good ring and no hacksawing. The pulley could have been girth hitched onto a loop and prussiked onto the FS.

The way you have it you are actually running in reverse to the usual set up. Usually the pulley is adjustable and the ring is fixed. This MIGHT not be as safe either as the force onto the set up mainly trvels onto the pulley attachment and when you trace that on your rig yo may have a scenario where the prussik is against the trunk/branch and gets slid along a bit ... like when your climbing and your prussik is just below a branck or fork and you slip down a bit.

With the usual set up the force is pulling the cam or prussik away from the trunk/branch and the ring tighter in ... pretty foolproof.

Do you get what I'm on about?
 
Hà, sorry Mangoes.

The first choice of material in this setup was a normal climbing line and a dyneema sling as a prusic.
Advantage was that it was small and easy to take with me up into the tree.
The disadvantage was that the dyneema sling 'skid' on the line if it was dressed in a nice tanglefree way.
But the biggest disadvantage was that it ripped the bark from the trees in the spring.

<font color="green">The dyneema had to stay because it did not clog the open space in the ring</font>

So the rope had to go and was replaced for the soft, wide 'treeforgiving/nice to the bark' material that's used for slings.
Advantage was that the bark stayed on the tree and that the dyneema prusik had less tendency to skid along the 'rope'.
The disadvantage was that it was getting bulky.

My last creation had to get rid of the bulky splices and still have enough indentation possibility to keep the bark on the tree and that the dyneema wrapped around it firmly.

EKKA,

The reason for me to have the setup this way is because I NEVER ('never' as in relation to pulley/ring setup) had a stuck FS up in the tree.

Take another look at the picture and imagine it pulled out.
There is no tearing a pulley upwards together with the ring towards the trunk and than flopping thru the ring like the comercially designed FS's.
I pull the pulley backwards and the ring forwards towards midair so there is no obstruction by the trunk or unwanted backflip route-folowing of the pulley.

O, Ekka and about the sliding, that happened only with the climbing line use. But if it would happen, it would only go as far as the first thickening of the splice or in the case of the one I use now to the small ring.
 
Well, you are correct, I dont think it will get stuck.

The idea has proven itself in the field and withstood a little interigation ... it's a winner. Well done
 
Brandon, you have to actually call them to see if they have any....it's not something they keep in stock regularly. BE prepared to supply lengthy explanations to who ever pics up the phone, as they probably will be thinking of a CMI pulley at first. You'll eventually get connected to someone who knows what you're talking about.

If they don't have them, Sherrill quoted me a price of like $131 last time I asked them. Yes, it was well over $100.

If you don't wanna dole that out, Greg Good sometimes has them. Last time I talked to him, I bought all the ones he had available. He might have more by now.

love
nick
 
Try adding a whipping or tape to make a nice taper to the pully. This should help the pully to hang up less on it's way through the ring. I'll poast a picture next week if you like.
 
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