Blocking....

[tommer9]

Yeah, as tommer said, his working life. Haha

 

:lol:It may even outlast me!!

[Frank]

:lol:It may even outlast me!!

 

As long as it outlasts the tree your working on then it's ok hahahaha

[RC0]

Nice work as always Reg.

Couple of questions.

1: why in the video does it seem you alternate between timber hitch and bowline after your half hitch?

2: if the double pulley setup isn't set exactly level, would the weight be caught on a single side first (matter of split seconds), and would this make any noticable difference to swl's?

3: can't really swl from the video but could you have setup some sort of friction device for the tag line on the tree opposite to make life easier for the poor lad attached to them big lumps?

 

Frank

 

On the the double-rigged sections they are all finished with a running bowline, for convenience of course not strength.

 

There's usually about an inch between the 2 so yes one does slightly favor the other. But realistically by the time the log pulls out the stretch on impact they probably share at about 55/45....personally I think that's pretty good.

 

For one thing he's not a poor lad for merely being asked to pull on a rope 10 times; Second, all he had to do was pull the logs clear of the device within a 180 degree radius which he did just fine.

[Frank]

Cheers Reg. I pretty much figured that even within an inch it maybe aprox 55% / 45% i just wondered if much research or maths had gone into working out what forces would exerted on to the higher percentage taking pulley, I.e how much energy the pulle catching first would take out of the force before the 2nd one took affect and whether it was such a large amount to begin with that it would almost render the second one obsolete. Ever since you posted the thread about designing your own friction block I have been thinking loads about rigging principles. Love what you do and am genuinely impressed with every contribution you make, not only to arbtalk but to the whole industry.

 

Oh and the comment about the secondary friction point for the tagline was a joke really, bit I do believe sometimes it is a really good idea to configure something into the system to elimate any chance of the guy on the tagline slipping on gravel or something whilst trying to control a big lump, in a world of more and more RA and H&S.

[RC0]

Cheers Reg. I pretty much figured that even within an inch it maybe aprox 55% / 45% i just wondered if much research or maths had gone into working out what forces would exerted on to the higher percentage taking pulley, I.e how much energy the pulle catching first would take out of the force before the 2nd one took affect and whether it was such a large amount to begin with that it would almost render the second one obsolete. Ever since you posted the thread about designing your own friction block I have been thinking loads about rigging principles. Love what you do and am genuinely impressed with every contribution you make, not only to arbtalk but to the whole industry.

 

Thanks for your interest Frank, I glad the whole thing got your attention. If we were using steel cables then the first would obviously bare the initial the impact within a split second, that until the log tilted enough for the second to engage....but if you were still within the SWL for that single cable then you'd still be doing nothing wrong, technically. Those polydyne ropes are stretching by at least 2ft throughout the whole system, even when pre-tensioned....so a 1in tolerance within 2 or so ft is acceptable to me; If I thought otherwise then I could easily adjust the tail on one of the slings so the blocks would be aligned perfectly. Perhaps more significantly is to pre-tension both lines as evenly as possible

 

Frank I don't tell people what to do, but I'm certainly not going to wait around for the industry to tell me what to do either. It amazes me how people and groups of people get paid to talk maths but without actually solving the problem....Blocking/negative rigging is a prime example, same ole maths, best part of 2 decades now.

 

There are two kinds, those that do and those that talk about it....I'm going to carry on doing so long as I'm in the job. Use the techniques, don't use them, whatever seems most logical. Please don't ask me to quote maths buddy.

 

Oh and the comment about the secondary friction point for the tagline was a joke really, bit I do believe sometimes it is a really good idea to configure something into the system to elimate any chance of the guy on the tagline slipping on gravel or something whilst trying to control a big lump, in a world of more and more RA and H&S.

 

Frank, I hope you are still kidding. If you fall on your backside while doing manual labour, get up and be more careful next time.

[Mesterh]

Frank, I hope you are still kidding. If you fall on your backside while doing manual labour, get up and be more careful next time.

 

:congrats:

 

Gotta say thats exactly how it should be.

 

Too much effort goes into not letting the guy fall over and not into the job.

 

 

Excellent thread again RCO as usual.

[Frank]

Haha excellent answers as always. I was kidding about the tag line being anchored. Was having a chat about how much redtape and h&s there is in the world today and am now looking at everything through the eyes of risk management and laughing at how much you can go into it to stop all trips and slips etc.

 

Really liked the double pulley technique though mate. Many times have we blocked down sections of similar sizes onto single lines and pulleys and only ever speculated over what the gear could handle. I'm a big fan of redirect rigging and getting more rope in the system, so it is nice to find a way of getting even higher swl's.

 

Mucho gracious.

[Ted Maul]

Hi Reg. You mention the stem was a leaner, do you set up an anchor for setting the lines etc on the underside of the lean? On a couple of the pics it looks like you have a rescue pulley or similar set up?

[Stevie Mac]

Fantastic job again Reg! Your and your team are a inspiration and credit to our industry!

[Catweazle]

Did someone already try to fell the tree ? Pic 14 looks like it has a cut at the base.