Simple 3:1 Rigging aid

[Reg]

For those who dont have a sophisticated Lowering device like a GRCS or Hobbs, here’s a relatively cheap and simple means to pretension a line on your more basic model.
A couple of pauses in the vid where I momentarily forgot where the whole thing was headed, but the video has come out quite clear so its easy enough to see what’s going on.

The technique clearly works well on the device in the vid as well as any fixed Bollards out there, but I'm not sure about the other hanging (portawrap) types as I didn't have one try it out on. Thanks
http://www.youtube.com/watch?v=TMADD6KV0ZY

 

[JTinaTree]

Pretty neat idea there reg with putting a anchor on the the other side of the bollard. I will have to try that with my Porta Wrap, thats a very simple yet very effective way of getting rapid slack removal out of something other than a GRCS or HOBBS device..

 

[oldirty]

well done.

your voice reg, so soothing. you could be narrating my demise and it wouldnt end up sounding all that bad. lol


thanks for sharing.

you rocking that stein helmet too? does the visor/eye protection (not the mesh) come out of the helmet on that one?

 

[Blakesmaster]

Not something I'd use all the time but I can see how that would be handy. Thanks for sharing, Reg.

 

[TheTreeSpyder]

Wow, very nice!

i put an eye on 1 of the original "T" shaped Portys to do similar. Potential =3x; less friction. i always figured here, friction was rather curious, in that the 2x at the prussic pulley pulled down to slacken the friction at wraps to sneak purchase thru.

So, somehow seems like there should be some loss for the slick locking action of the Turns.

So, i maid a small 3x with another pulley and snap; to clip temporarily, or just fold down out of the way for lowering. Also, by hanging on pull end with full weight, you can then pull up on part on other side of upper pulley; for 3xBodyweight + 4xEffort.

If you pull a board or bar sideways, you can leverage it, because it can resists sideways force; but a rope cannot. But, if you pretighten the line; it then resists bending/sideways force; so therefore can get leveraged return. Brion Toss tells of swashbuckling tales about men at sea with nothing but wind power, rope, sail and wits to save them. When they lost or broke the capstan crank; they had to 'sweat' the line for more 'purchase' (of line from tensioned side passed brake to low tension side) to give higher line tension and/or lift. Some times with proper orchestration, you can tighten the line linearly with rig, and sweat at the same time IMLHO.

 

[Reg]

Wow, very nice!

i put an eye on 1 of the original "T" shaped Portys to do similar. Potential =3x; less friction. i always figured here, friction was rather curious, in that the 2x at the prussic pulley pulled down to slacken the friction at wraps to sneak purchase thru.

So, somehow seems like there should be some loss for the slick locking action of the Turns.

So, i maid a small 3x with another pulley and snap; to clip temporarily, or just fold down out of the way for lowering. Also, by hanging on pull end with full weight, you can then pull up on part on other side of upper pulley; for 3xBodyweight + 4xEffort.

If you pull a board or bar sideways, you can leverage it, because it can resists sideways force; but a rope cannot. But, if you pretighten the line; it then resists bending/sideways force; so therefore can get leveraged return. Brion Toss tells of swashbuckling tales about men at sea with nothing but wind power, rope, sail and wits to save them. When they lost or broke the capstan crank; they had to 'sweat' the line for more 'purchase' (of line from tensioned side passed brake to low tension side) to give higher line tension and/or lift. Some times with proper orchestration, you can tighten the line linearly with rig, and sweat at the same time IMLHO.

Thanks Kenny, always a pleasure

OldDirty, that helmet is just a basic one I use for groundwork. Thanks again

 

[fishercat]

pretty slick drvice.

i like that porty too.

wonder where to get them stateside.

 

[treemandan]

well done.

your voice reg, so soothing. you could be narrating my demise and it wouldnt end up sounding all that bad. lol


thanks for sharing.

you rocking that stein helmet too? does the visor/eye protection (not the mesh) come out of the helmet on that one?

You too? Do you remember The Happy Painter? Oh boy, that guy was great.

 

[zopi]

Wow, very nice!

I got to sail on Constitution a couple years ago for a turnaround cruise, and we used this technique every few minutes or so..it was he only way to make
headway on a tensioned line...took ten or so of us to turn the main top, three swigging at the pinrail and the rest hauling the line...alot of work, but it's effective.

 

[Adkpk]

well done.

your voice reg, so soothing. you could be narrating my demise and it wouldnt end up sounding all that bad. lol


thanks for sharing.

I have Reg's you tube page bookmarked. Watching that guy just helps me feel better about myself at times.

Big fan of your vids and work. You are one smooth cat, Reg. Keep up the good work and stay safe.

 

[John Paul Sanborn]

I have Reg's you tube page bookmarked. Watching that guy just helps me feel better about myself at times.

That big chunk of beech that was flying all over the place sure puckered me up!

 

[Adkpk]

That big chunk of beech that was flying all over the place sure puckered me up!

Ya Reg, what was up with that? Wasn't that piece needing to be lowered faster? Maybe cut a little smaller in retrospect?

Myself, I thought my cell phone was ringing in the other room when that music started. Good choice of music at that point. Had that dead pan sound of Tibetan monks chanting. I get that sense while at heights in trees.

 

[oldirty]

You too? Do you remember The Happy Painter? Oh boy, that guy was great.

bob ross right? lol. i remember him. pbs channel.


and indeed that large piece of swinging beech was supposed to run. i am sure reg gave that guy the stink eye because the next piece ran some to get away from the climber.


i got saved by 2 spars of poplar in AK on a very similar setup. f'n ground guy didnt let it run, even after i told him to. wouldve been mushed.

i really like that lowering set up now that ive thought about it some. takes the slop right out the lowering point.

 

[jomoco]

Reg can of course correct me if I'm wrong, but that first beech log with a little brush on it never came anywhere close to him after he cut it. It was an optical illusion that it did because of the camera angle. Reg was behind that log's gyrations by more than 6 feet, hence no visible reaction to any danger on his part.

Reg knows what he's doing up there you guys.

jomoco

 

[oldirty]

Reg knows what he's doing up there you guys.

jomoco

indeed he does jo.

 

[treeslayer]

takes the slop right out the lowering point.

:agree2:
I gotta get one of them converted friction devices, and set myself up with the other implements, I see a LOT of potential use for that in my arsenal.

Brilliant idea Reg. (and a really good demo vid.) where do I get one?

 

[Reg]

Reg can of course correct me if I'm wrong, but that first beech log with a little brush on it never came anywhere close to him after he cut it. It was an optical illusion that it did because of the camera angle. Reg was behind that log's gyrations by more than 6 feet, hence no visible reaction to any danger on his part.

Reg knows what he's doing up there you guys.

jomoco

Jo is correct....not so much the part that I know what I am doing, but in reading what happened with that swinging log. When you see it on the headcam it looks like nothing....I was surprised myself when I played it back from the ground-view so decided to use that clip to add a little drama. Steve (groundsman) told me he didn't let it run for he feared with such momentum it would wrap its self around the trunk further down....so instead initiated the collision to change its course. Might sound like BS but when you watch how smooth he handles the next one I'd be inclined to believe him.

Treeslayer, the RC range is only just in the process of being publicised over here: http://www.fletcherstewart.co.uk/products.php?cat=162 and will soon be advertised by many of the UK retailers. Hopefully we'll get a deal with one more of your US suppliers when the tools are exhibited at your TCIA expo in a couple of weeks. If you're still interested then better to hold off a while brother and it'll cost you less. Thanks again

 

[treeslayer]

http://www.fletcherstewart.co.uk/products.php?cat=162 and will soon be advertised by many of the UK retailers. Hopefully we'll get a deal with one more of your US suppliers when the tools are exhibited at your TCIA expo in a couple of weeks. If you're still interested then better to hold off a while brother and it'll cost you less. Thanks again

I'd pay that for the 2000kg model. I like the assortment of gear, you need a local (US) distributor. Tobe, you listening?

 

[John Paul Sanborn]

Steve (groundsman) told me he didn't let it run for he feared with such momentum it would wrap its self around the trunk further down....so instead initiated the collision to change its course. Might sound like BS but when you watch how smooth he handles the next one I'd be inclined to believe him.

With the swing and mass I might have put a tag, or but line on something that big. Just makes things go faster when they can go swingin'