RopeShield
Carpal tunnel level member
- Location
- Ontario, Canada
OLDS-Overhead Lowering...
- Thread starter Tom Dunlap
- Start date
SingleJack
Participating member
- Location
- W MD
There are many ways (& reasons) to lower a limb solo. The video below uses a Belay Spool, a Rope Jack and a 'French' Prusik.
Solo Limb Lowering
1st came the Belay Spool for consistent friction;
2nd the Prusik for controlled lowering;
3rd the Rope Jack for pretensioning;
4th, hopefully, will be a release. For now, an un-trained groundy is still required.
"All things come to those who wait." - Violet Fane (Tout vient qui sait attendre)
Solo Limb Lowering
1st came the Belay Spool for consistent friction;
2nd the Prusik for controlled lowering;
3rd the Rope Jack for pretensioning;
4th, hopefully, will be a release. For now, an un-trained groundy is still required.
"All things come to those who wait." - Violet Fane (Tout vient qui sait attendre)
boreality
New member
- Location
- boreal forest
That worked but it looked like a portawrap/redirect pulley would of done the work of the spool/prusik more efficiently.
- Location
- Retired in Minneapolis
[ QUOTE ]
That worked but it looked like a portawrap/redirect pulley would of done the work of the spool/prusik more efficiently.
[/ QUOTE ]
Looks can be deceiving
Basically, you're right. Either would work. But...the OLDS is far superior to a bollard in the tree. There's no chance of throwing off a turn of rope when the limb moves away is, to me, the biggest difference.
When I needed to lower things by myself there are two ways that I snubbed off the load. First, if I was near the OLDS I'd tie a slipped half hitch and jam it against the body of the OLDS. After the limb was cut I'd slip the tie-off and lower. If I wasn't near the OLDS I snub off the rope around another limb or the trunk.
The times would do that is when the ground crew was busy getting limbs cleaned up on the ground. I didn't need to take one away to lower. This would make OLDS a trained groundie...who wasn't paid!
If you didn't have an OLDS a bollard could be used. I wonder how much they weigh compared to the OLDS. I know that the OLDS is much easier to drag around the tree though.
Nice vid!
That worked but it looked like a portawrap/redirect pulley would of done the work of the spool/prusik more efficiently.
[/ QUOTE ]
Looks can be deceiving
Basically, you're right. Either would work. But...the OLDS is far superior to a bollard in the tree. There's no chance of throwing off a turn of rope when the limb moves away is, to me, the biggest difference.
When I needed to lower things by myself there are two ways that I snubbed off the load. First, if I was near the OLDS I'd tie a slipped half hitch and jam it against the body of the OLDS. After the limb was cut I'd slip the tie-off and lower. If I wasn't near the OLDS I snub off the rope around another limb or the trunk.
The times would do that is when the ground crew was busy getting limbs cleaned up on the ground. I didn't need to take one away to lower. This would make OLDS a trained groundie...who wasn't paid!
If you didn't have an OLDS a bollard could be used. I wonder how much they weigh compared to the OLDS. I know that the OLDS is much easier to drag around the tree though.
Nice vid!
- Location
- Phoenix Arizona
How did I miss this? What a great tool. Thanks Treebuzz
- Location
- Renton, WA USA
Seemed so interesting I bought one very recently. Haven't used if for real work yet, but I like the idea.
- Location
- above the KY rhizosphere
So with the BS your rigging point is also your friction device, correct? or are you using a pulley ahead of the BS?
- Location
- Retired in Minneapolis
No pulley...the OLDS/Belay Spool is the lowering device all in one package.
- Location
- Retired in Minneapolis
Ricky,
Are you suggesting using a F8 for over-head rigging/lowering?
If so, I'll tell you that the don't work anywhere near as well as the OLDS/BS.
~~~They're not rated for the loads that might be expected in rigging.
~~~They hockle the rope.
~~~Trying to yard rope backwards through an F8 is almost impossible. Doing it with the OLDS/BS is almost as easy as going back over a pulley.
F8's for rigging is comparing apples to antelopes when considering what the OLDS/BS will do.
Are you suggesting using a F8 for over-head rigging/lowering?
If so, I'll tell you that the don't work anywhere near as well as the OLDS/BS.
~~~They're not rated for the loads that might be expected in rigging.
~~~They hockle the rope.
~~~Trying to yard rope backwards through an F8 is almost impossible. Doing it with the OLDS/BS is almost as easy as going back over a pulley.
F8's for rigging is comparing apples to antelopes when considering what the OLDS/BS will do.
- Location
- Retired in Minneapolis
I read through the pdf of the instruction manual for the Piranha.
Its labeled use is a '(EN) Descender for canyoning'.
Hardly a good choice for rigging tree loads.
Its labeled use is a '(EN) Descender for canyoning'.
Hardly a good choice for rigging tree loads.
http://www.sherrilltree.com/Professional-Gear/Descenders_2
Well Hey what do I know? Just look at the category it's under. Tom you should call them.
Well Hey what do I know? Just look at the category it's under. Tom you should call them.
- Location
- Retired in Minneapolis
Who would I call and why?
The P isn't a lowering device...I'm confused????
The P isn't a lowering device...I'm confused????
[ QUOTE ]
http://www.sherrilltree.com/Professional-Gear/Descenders_2
Well Hey what do I know? Just look at the category it's under. Tom you should call them.
[/ QUOTE ]
Category? Descenders are for the climber descending. Lowering devices listed on the 'rigging' category are for lowering wood.
"You should call them" ???
Ricky you may try not to be such a smarta$$ so often. It really makes for an unpleasant environment.
http://www.sherrilltree.com/Professional-Gear/Descenders_2
Well Hey what do I know? Just look at the category it's under. Tom you should call them.
[/ QUOTE ]
Category? Descenders are for the climber descending. Lowering devices listed on the 'rigging' category are for lowering wood.
"You should call them" ???
Ricky you may try not to be such a smarta$$ so often. It really makes for an unpleasant environment.
treebing
Been here much more than a while
- Location
- Detroit, Mi.
That is a point
RopeShield
Carpal tunnel level member
- Location
- Ontario, Canada
From the website
Although not designed as such, the Belay-Spool can also function as an effective lowering device and thereby greatly simplify the rigging requirements of an operation. Personnel in industry who from time to time may be called on to accomplish rescues of their fellow workers can benefit from this added simplicity. This is also true for the fire service, especially when rope rescue scenarios are infrequent. In addition the speed of which they can be rigged can only be a benefit to the patient.
Carroll C. Bassett
Good enough in rescue = ggood enough for me
Although not designed as such, the Belay-Spool can also function as an effective lowering device and thereby greatly simplify the rigging requirements of an operation. Personnel in industry who from time to time may be called on to accomplish rescues of their fellow workers can benefit from this added simplicity. This is also true for the fire service, especially when rope rescue scenarios are infrequent. In addition the speed of which they can be rigged can only be a benefit to the patient.
Carroll C. Bassett
Good enough in rescue = ggood enough for me
