I know there has been a post about this before on the rigging FS but was wondering what is the maximum working load that guys who have tried this got out as far as the rings and has it been set up so it can be removed from the ground. I was thinking about this that if you had a ring to ring FS type rigging device that was removable from the ground it would be much easier than using pulleys. If you're taking off bigger pieces at the lower portion of the tree and have to climb all the way up to the top for your final tie in and set a rigging pulley or block, and then have to go back up to get the block why not use some kind of ring to ring FS. I was thinking you could use a double braid with two of the rigging rings and then have a smaller ring off that for the retrieval system. That way you're not having to chase down your pulley or block after you get done removing the lower larger pieces. Any thoughts or dispute would be great.
Rigging Friction Saver 2
- Thread starter PUClimber
- Start date
- Location
- Retired in Minneapolis
Re: Rigging Friction Saver
I've got a steel ring/ring FC that I use for rigging. All of the loads are well within specs for the FC.
Take the concept and build one with stronger pieces. You can get strong rings or shackles from industrial rigging shops. They have ready made webbing slings too. Seizing the eyes of the webbing slings to keep everything fair is easy enough too.
Here's a setup that Nick sliced up for me.
I've got a steel ring/ring FC that I use for rigging. All of the loads are well within specs for the FC.
Take the concept and build one with stronger pieces. You can get strong rings or shackles from industrial rigging shops. They have ready made webbing slings too. Seizing the eyes of the webbing slings to keep everything fair is easy enough too.
Here's a setup that Nick sliced up for me.
Attachments
- Location
- Retired in Minneapolis
Re: Rigging False Crotch
Yes..the red/Fly rope that is on the lower left, tied to the yellow double braid acts just like a throwline. In real life I might use a rope smaller than half inch, even a strong throwline would work.
Think of a climbing FC made from scaled-up materials.
If I didn't use a line to retrieve the setup I would be less worried about the life of the gear than I would be of the short life of who ever might be on the end of the red rope!
Yes..the red/Fly rope that is on the lower left, tied to the yellow double braid acts just like a throwline. In real life I might use a rope smaller than half inch, even a strong throwline would work.
Think of a climbing FC made from scaled-up materials.
If I didn't use a line to retrieve the setup I would be less worried about the life of the gear than I would be of the short life of who ever might be on the end of the red rope!
treebing
Been here much more than a while
- Location
- Detroit, Mi.
Re: Rigging False Crotch
leather tubes are nice.
leather tubes are nice.
- Location
- Retired in Minneapolis
Re: Rigging False Crotch
[ QUOTE ]
leather tubes are nice.
[/ QUOTE ]
For rigging? Have you used them? How long do they last?
[ QUOTE ]
leather tubes are nice.
[/ QUOTE ]
For rigging? Have you used them? How long do they last?
treebing
Been here much more than a while
- Location
- Detroit, Mi.
Re: Rigging False Crotch
haven't burned through one yet. I dont do a terrible amount of rigging with it. If I'm doing rigging intensive projects, Ill use a block. For smaller things, and that one branch in a tree type deal, I use it all the time. its great because it reduces friction considerably, protects the tree, and the rope, and is simple and easily withdrawn. I use the same one for climbing and rigging and dont have to worry about it. Really handy lil tool. I suppose it will wear out one day.
Jersey girl had some plastic tube cambium savers that I thought looked pretty cool and possibly cheaper. I think it neatly combines the advantages of natural crotch rigging with the advantages of less rope and tree wear..
haven't burned through one yet. I dont do a terrible amount of rigging with it. If I'm doing rigging intensive projects, Ill use a block. For smaller things, and that one branch in a tree type deal, I use it all the time. its great because it reduces friction considerably, protects the tree, and the rope, and is simple and easily withdrawn. I use the same one for climbing and rigging and dont have to worry about it. Really handy lil tool. I suppose it will wear out one day.
Jersey girl had some plastic tube cambium savers that I thought looked pretty cool and possibly cheaper. I think it neatly combines the advantages of natural crotch rigging with the advantages of less rope and tree wear..
countryboypa31
New member
- Location
- PA
Re: Rigging False Crotch
I have thought about this before, we do use the steel FS for light rigging. But what about using amsteel line, with some very high rated steal rings. Just like a climbing FS but much heavier rated. Its very nice to be able to remove your lowing devise without having to chase it. And natural crotching a load hurts the cambium much worse than even climbing.
I have thought about this before, we do use the steel FS for light rigging. But what about using amsteel line, with some very high rated steal rings. Just like a climbing FS but much heavier rated. Its very nice to be able to remove your lowing devise without having to chase it. And natural crotching a load hurts the cambium much worse than even climbing.
- Location
- Haddonfield, nj
Re: Rigging False Crotch
Derrick, the problem is, and I could be wrong, is that they don't make high enough rated rings to justify the use of an amsteel type rope. I use ring n rings for dead wooding because I know the weight isn't going to exceed 500 pounds. I have thought about using steel carabiners instead of just rings but at that point I'd rather run up and set a block instead of risking getting the friction saver stuck in the crotch of a tree because of the now oversized ring/carabiner.
Derrick, the problem is, and I could be wrong, is that they don't make high enough rated rings to justify the use of an amsteel type rope. I use ring n rings for dead wooding because I know the weight isn't going to exceed 500 pounds. I have thought about using steel carabiners instead of just rings but at that point I'd rather run up and set a block instead of risking getting the friction saver stuck in the crotch of a tree because of the now oversized ring/carabiner.
treebing
Been here much more than a while
- Location
- Detroit, Mi.
Re: Rigging False Crotch
I dont think its that the rings would break, its the rope bend that kind of sucks with ring and ring for big rigging purposes.
Tom, do you install that from the ground too? how limiting is crotch size with that big ole ring.
I dont think its that the rings would break, its the rope bend that kind of sucks with ring and ring for big rigging purposes.
Tom, do you install that from the ground too? how limiting is crotch size with that big ole ring.
- Location
- Retired in Minneapolis
Re: Rigging False Crotch
I've never tried to set it from the ground. That would be a challenge!
Just like setting a climbing FC the RFC needs some thought and planning if it's going to be retrieved from the ground.
Whenever I use RFCs I remove them in the tree as soon as I'm finished. That way the climber is still near by if the retrieval goes bad.
I've never tried to set it from the ground. That would be a challenge!
Just like setting a climbing FC the RFC needs some thought and planning if it's going to be retrieved from the ground.
Whenever I use RFCs I remove them in the tree as soon as I'm finished. That way the climber is still near by if the retrieval goes bad.
- Location
- Longmont, CO
Re: Rigging False Crotch
Static removable block is what I prefer. That looks like a pain to pull out.
Static removable block is what I prefer. That looks like a pain to pull out.
countryboypa31
New member
- Location
- PA
Re: Rigging False Crotch
I've never tried a static removable block i'm not sure i know how to set it up even. Maybe its something i should learn.
FT why not use shackles, they are highly rated and used to be used in rigging. One big one and a smaller one would work, haven't looked at the strength ratings to back this up but in theory. Plus why can't they make rings strong enough? If a biner or a shackle can have such a high strength rating why can't rings? The slings they used Sat at the work day with the crane, had triangular steel on the ends, even this would work and they must be rated as strong as the sling itself? Right?!? only makes sense
I've never tried a static removable block i'm not sure i know how to set it up even. Maybe its something i should learn.
FT why not use shackles, they are highly rated and used to be used in rigging. One big one and a smaller one would work, haven't looked at the strength ratings to back this up but in theory. Plus why can't they make rings strong enough? If a biner or a shackle can have such a high strength rating why can't rings? The slings they used Sat at the work day with the crane, had triangular steel on the ends, even this would work and they must be rated as strong as the sling itself? Right?!? only makes sense
- Location
- Longmont, CO
Re: Rigging False Crotch
Well, this is what I call it. See illustration.
And, this is not to be mistaken for a Static Removable False Crotch. This can be found on page 100 in The Art & Science of Practical Rigging
--I'm too lazy to scan it at the moment.
Well, this is what I call it. See illustration.
And, this is not to be mistaken for a Static Removable False Crotch. This can be found on page 100 in The Art & Science of Practical Rigging
Attachments
- Location
- Longmont, CO
Re: Rigging False Crotch
Some one correct me if I'm wrong with that...
Some one correct me if I'm wrong with that...
countryboypa31
New member
- Location
- PA
Re: Rigging False Crotch
Yeah i've seen that before and have chose not to use it for that reason. Which is worse putting double the load on the crotch or over straining some rings? Pick your poison i guess. To each there own.
Yeah i've seen that before and have chose not to use it for that reason. Which is worse putting double the load on the crotch or over straining some rings? Pick your poison i guess. To each there own.
- Location
- Haddonfield, nj
Re: Rigging False Crotch
Shackles have the option of coming unscrewed with friction constantly running over them, plus, and I've just become aware of this, the bend radius is too tight for heavier rigging (did I get that right?).
Not a bad idea though derrick, never thought about using shackles. As long as you somehow could lock them into place so they wouldn't come undone....
Shackles have the option of coming unscrewed with friction constantly running over them, plus, and I've just become aware of this, the bend radius is too tight for heavier rigging (did I get that right?).
Not a bad idea though derrick, never thought about using shackles. As long as you somehow could lock them into place so they wouldn't come undone....
- Location
- under grace
Re: Rigging False Crotch
Jamin that is the same set up I use . Tophopper you are also correct must watch the loading. THis is just another example of knowing how and when to use what tools?! nothing we do is perfect for everything
Jamin that is the same set up I use . Tophopper you are also correct must watch the loading. THis is just another example of knowing how and when to use what tools?! nothing we do is perfect for everything
- Location
- Retired in Minneapolis
Re: Rigging False Crotch
Jamin's illustration is also called a floating false crotch when it's used for climbing...do you know where the SRFC name came from? Too confusing...
John...as the loads are scaled up the configuration of the pieces is scaled up too. Using my ring/ring FC for limbwood and no-drop logs works fine...for me. I've worked through the numbers and I'm comfortable.
If the loads are larger a pulley/block could be substituted for one of the rings just like in a climbing FC...scaling up the gear as needed of course.
Using the Adjustable Rigging FC gives me lots of flexibilty and I can move the block up or down to put it in just the right place. Most of the time that doesn't make a difference but there have been times when the adjustability makes a lot of difference.
Jamin's illustration is also called a floating false crotch when it's used for climbing...do you know where the SRFC name came from? Too confusing...
John...as the loads are scaled up the configuration of the pieces is scaled up too. Using my ring/ring FC for limbwood and no-drop logs works fine...for me. I've worked through the numbers and I'm comfortable.
If the loads are larger a pulley/block could be substituted for one of the rings just like in a climbing FC...scaling up the gear as needed of course.
Using the Adjustable Rigging FC gives me lots of flexibilty and I can move the block up or down to put it in just the right place. Most of the time that doesn't make a difference but there have been times when the adjustability makes a lot of difference.
New threads New posts
-
test
-
-
What's on your mind? TCI Magazine wants to know
- Started by Tree Care Industry Assoc.
- Replies: 12
-
Apr 09 (Free CEUs) & May 07 - 'Urban Forestry Today' Webcasts @ Noon (Eastern)- Started by UFT
- Replies: 0
-
-
-
