Speedline pic!

[TREETX]

I don't get to see many speedline pics.

Here is one from yesterday. This is a company I am going to start subbing for. I just went there yesterday to meet the crew members and see some action.

I don't want to beat up on anyone in these pics. Moves were well thought out for the most part. PPE was everywhere. Communication was good.

Can you name the one really wrong thing in this pic?

hint - the log in the pic was going about 90mph when the pic was snapped (that is why part of it appears to be missing)

 

[MasterBlaster]

No tag line, maybe?

 

[TREETX]

They had the equipment but didn't integrate it....

Drop the chunk, then put it on the speedline.

Plus the only thing holding in the 1st pic is a little sling. The other thing tied on is a rope used to pull chunk off.

This sytem with the other sytem.......

system 2 pic

 

[MasterBlaster]

Hard to see...

 

[TREETX]

The targets that had to be avoided.....

No hurry to move in here....

 

[SilverBlue]

Originally posted by TreeCo
In my opinion that piece is a little large using that size rope with a carabineer. Using a haul back line to slow it down and using a pulley instead of a biner would make me more comfortable with a chuck that size. Biners can get so hot the ground crew can get burnt removing them.

It looks like the speed line runs into another tree at some elevation. I've often done that to slow things down especially with small drop zones.

It looks like the job went safely and those guys kicked butt.

Take Care,

Dan

 

[TREETX]

Originally posted by TreeCo
It looks like the speed line runs into another tree at some elevation. I've often done that to slow things down especially with small drop zones.

It looks like the job went safely and those guys kicked butt.

Good eyes. It was about 15ft off the ground. Chunk still hit going mach1.

Other than this one chunk (doesn't the camera alway get that one ) everything was very textbook.

These guys kicked butt.

I can pick on the 1 or 2 things I thought were wrong on one chunk, but I can also make an endless list of all the things they did right!!

 

[jmchristopher]

As mentioned, just the little strap, single choked. A notch on the log's back side would help it stay seated, maybe.
Attach that biner to a pulley/clevis. Even better, a rigging plate, too, which makes it easier to attach the pull back line.
I've seen a biner get hot enough to melt line after a long, fast run under too heavy a load.

 

[John Paul Sanborn]

Since I have The Winch, I would have used a drift line on that.

Drop the piece onto the block then winch it into the other tree while slowly letting it out with the rope on the catch block.

Secure the catch near the bottom and the drift around 1/3 down from the top.

As the pice comes down, pull as much slack as you can so it does not slam into the spar.

Comprendes?

 

[SilverBlue]

JP, do you have any pics of the winch in action?

 

[MasterBlaster]

Whatever happened to your secret weapon, Rob?

 

[SilverBlue]

It's still in the testing stage Butch, need to modify the hydraulics/ remote control somewhat and fine tune the wet clutch to alow dialing in the amount of run before lock up.

 

[John Paul Sanborn]

I'm not too big on the picture thing.

Maybe Kenny or Mike could draw a picture.

Think of a high rig point for the drift line a in an adjacent tree with the winch mounted under it.

Cliber secures the drift line to the top of the chunk, down climbs and sets the block as normal.

Ties the chunk off normally.

The drift line can be used to pull the chunk off, then the slack is pulld out fast as the piece comes off and is caught with both lines.

as the drift line is pulled in the rig line is let out so the piece is moved to the DZ away from any obsticals. I've seen chunks dropped into trcks this way when conditions are perfect for it.

 

[Lumberjack]

That method was covered in the TCI mag a while back... they did a redwood that was huge, and a oak? that had blown over on the house and had to be lifted off without a crane.

It is a pendalum with a tag line. The pendalum tied to the top, and the tag line goes through the pulley, like you are blocking it down. The GRCS is on the pedalum line, which lifts the chunk, while the drift line controls the swing. This allows for extreme control over the piece, even allowing you to lower pieces onto the truck.

I have used it a few times to lower the top of a tree directly onto the trailer, it works great.


I think that he (and I) wanted pics of your GRCS in use in general. GRCS's are cool, i need one .

 

[rbtree]

Originally posted by John Paul Sanborn
Since I have The Winch, I would have used a drift line on that.

Drop the piece onto the block then winch it into the other tree while slowly letting it out with the rope on the catch block.

Secure the catch near the bottom and the drift around 1/3 down from the top.

As the pice comes down, pull as much slack as you can so it does not slam into the spar.

Comprendes?

I just saw this thread, hence the late reply.
Why use a drift line here, John? A speedline with control would be way faster.
Second, perhaps they needed the piece to land quite a ways away. With a drift line, you'd have to have it set pretty high in the adjacent tree to accomplish that.
Correct me if I'm missing something.

 

[TheTreeSpyder]

i think drift line could be used to muscle hinge over slower, control speed as load moves away, and some support if line is tightened quick enough (which slow hinging helps).

A GRCS with built in JPS would be great for this. Falling $hort of that, some creativity might help out to use the same principals, only not as powerfully.

i think withthe right stretchy line, you caould preload that 'rubber band' with tension, to help make up for some speed in 'reeling in' the 'drift' line. The farther away the drift support is from the hinge, the faster you have to reel in the line to have any effect IMLHO.

 

[TheTreeSpyder]

This jewel i found in the stacks here; and know not where it came from; it is not my own, but a great speedlining strategy of successive pulls, that with all do respect bears repeating.

Notice beyond the great strategy and drawing, the one way adjustment on stump.

 

[NickfromWI]

Originally posted by TheTreeSpyder
A GRCS with built in JPS would be great for this...

Are these available from Greg Good?



love
nick

 

[rbtree]

Notice beyond the great strategy and drawing, the one way adjustment on stump. [/B]

A prussic minder doesn't allow quick slacking of the speedline, a must when able to zip with no control line.

 

[TheTreeSpyder]

Here is another, a trial at 2.5D eye candy animation.

On a lighter limb over a roof, you can use a less-than 2:1 to pull the limb around on the hinge, then let the load be guided down the speedline/zipline/gravity bender at tearoff.