howdy,
for obscure reasons I have never found a crystal-clear resource covering a negative rig double-whip setup with rings and/or blocks to control and lower large chunks down one face of an isolated stem. No doubt vids exist but alongside whatever you might link I would benefit from a pdf or photo file covering the knots and options between solo (canopy) operation or doing with ground crew using one or two bull ropes.
For context, the job ahead is a single 20 meter stem tight to an obstacle with a very small landing zone on a slant. I will be using rings.
Any help would be ... helpful.
cheers
for obscure reasons I have never found a crystal-clear resource covering a negative rig double-whip setup with rings and/or blocks to control and lower large chunks down one face of an isolated stem. No doubt vids exist but alongside whatever you might link I would benefit from a pdf or photo file covering the knots and options between solo (canopy) operation or doing with ground crew using one or two bull ropes.
For context, the job ahead is a single 20 meter stem tight to an obstacle with a very small landing zone on a slant. I will be using rings.
Any help would be ... helpful.
cheers
). So they want me to rig as much wood as possible uphill. Apparently the previous climber limbed them up and dumped a big top into the rigging to the other spar and snapped a 3/4" sooo the groundies refused to set up underneath the trees (that and it was veeery steep and muddy, i basically had to crawl up the hill). The first spar (as seen in the vid) was the easier of the two, just drift logs to the other spar uphill using two ropes and two lowering devices.The one Lowering Device had to go on a tree up the hill. Yes, this sideloaded the spar, a bad move. What we should have done was a redirect at the base to another tree then down into the LD but a true 100ft stick means a maxed out 200ft rope which is all they had & all i had as well so not enough rope for that. BUT these are big solid spars and the LD is uphill from the lean and (despite the fish eye view) the angle was shallow till we got lower. On the first tree this was also only the drift line. Now the 2nd spar was harder. We straight neg rigged it. 1:48, 2:09, 2:48 you can kind of see the set up. The neg rig line, the LD uphill on another tree and a 2nd line as a pull line + it goes thru a pulley uphill to a truck to yard it up the hill after the groundie was done letting it run. So that's the kind of whacky shit you get to walk into blindly, inadequately prepared for, working for unreasonable people who have no clue if it's even possible to do what they promised the client, lacking the right gear and skilled labor. So, anyone wanna come to the Bay, i got tons more work 
