The RADS System

[@rene3966]

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.

[@arianvakili8964]

A post a pic bro

[@TheNfields260]

does it matter to run a right hand ascender with a left foot ascender? I run a grigri to progress capture. Thanks!

[@ryan8779]

Would love to see this setup.

[@TheRPhelps24]

I've been wondering how to incorporate my foot ascender I got into the RAD system that I know how to use. For some reason, it didn't occur to me to do what your describing! So instead of pulling down with the right hand in this video, that line goes down to your foot ascender! Interesting!

[@youtubedan1443]

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.

[@340wbymag]

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

[@utar88utar]

thank you for explaining. good job.

[@jamesandersen9822]

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.

[@arianvakili8964]

Can you add a right foot ascender to that equation

[@kkutube1972]

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

[@thebeardedman-drenaline5546]

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

[@xpumax1]

throwline

[@mumtiTV]

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.

[@mumtiTV]

@@BartlettArboristSupply perhaps it's more about the frame of reference I was focusing on the hand-pull out of the pulley and excluding the leg press as the combination is a complex system (hand acting on a moving "pulley, your ID", and tthe leg acting on a stationary anchor, the rope grab of the hand-ascender which could extended all the way to the tree anchor. If your body weighs 100, both legs of rope out of the petzl ID will be 50, the rope out of the pulley would be 50, thus 2:1 with respect to your weight, however the tree anchor experiences 150 during a hand pull. When you synchronize the hand-pull (slack removal) with the foot press I don't know how to analyze that :)

[@leventekovacs7121]

Hello Can the RIG handle 11.5-11.8mm rope?

[@BartlettArboristSupply]

The Petzl Rig allows rope from 10mm-11.5mm.

[@gamingsqaud22]

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

[@judsonkimble]

@@BartlettArboristSupply I personally think it should be renamed the: Reliable Ascent/Descent System.

[@henrykg]

In old times, before Rope Runners and Akimbo, this was quite nice method. And I still use it as cheap and reliable system for amateur climbing.

[@stevebrough304]

Thanks Abdon.

[@Hidden_Destinations]

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