The RADS System 

I like this method very much. It is super-simple even for an old guy like me.

I'm another old guy who got into arborist work out of financial necessity. Here's two improvements on the above setup to consider. I bought the Petzl Rig, which I love, but found the above footloop method of foot attachment to the hand ascender to be too sloppy to get in and out of; and the Petzl hand ascender/swing-cheek pulley combo to be a source of unnecessary friction between sections of the rope and the pulley. I switched to a Climbing Technology Quick Roll hand ascender, with its integrated pulley, and that keeps the rope sections fully separated (plus there's less gear to drop or harness on rappel). Finally, I use a CT foot ascender, making snapping in and out of the rope a breeze - because I never have to wonder where either my foot or the rope are down below. With this setup there's no need to tend the slack through the Rig - as you work the foot ascender, you and the Rig are advanced up the line. After each advance, use your hand ascender to push further up the rope line and aid in the next foot pump advance. Tie off the hand ascender to your bridge with a sling and you have a second safety should the Rig ever fail.

thank you for explaining. good job.

Great video. If I could make any recommendation it would be to snug up that bridge. The rig is up at your forehead. Get it as low as you can and you greatly improve the efficiency of your stride. Also a Petzl Roll Clip Z is a biner/pulley hybrid that does what you’re doing up top but with one less piece of gear.

Because I climb once a year, I always come back to the RAD system.

Nice video. We use the I.D in towers but I also use it in trees now. I am so use to it for my SRT. I have the zigzag but it feels like I am going down too fast.

Thanks Abdon.

Thinking using a RIG and a second rope to suspend myself mid-air out in front of branches, or between two trees. How to tend the RIG though has been my question - guess the same way as a Grillion? Or maybe use a Grillion instead?

Can you add a right foot ascender to that equation

What method did you use to get the rope up in the tree?

Hello Can the RIG handle 11.5-11.8mm rope?

This is a 2:1, not 3:1. Good video.

I fail to see where “rapid” comes into this. Seems like a normal srs rope walker set up would be faster

The description says 3:1 mechanical advantage how are you deducing this and not 2:1 ? I see only one acting like a moving pulley (the petzl ID or grigri device) moving up towards anchor during the hand pull. Thank you.