Bjørgvin

Little update: Just a friction hitch on a single line was ok as long as the roof is not steep. But not sold on it as steep roofs is part of the job aswell. I then rigged a rads type 3:1 system without a rig/grigri/id as they produce alot of friction. Used a twin pulley connected to a grillon lanyard on my harness, and then put the friction hitch on the third leg of rope. As a result the hitch only holds a third of my weight and worked perfect! As the grillon is adsjustable I can move the system away from me when ascending, getting a good pull on the third leg. Almost a frictionless 3:1. When decending I leave my hand ascender on the roof ridge. This system has to be rigged when I have reached the roof ridge, because you can not move the hand ascender up when the hitch is holding my weight on the third leg. But thats ok. Takes 3 minutes to gain 7 hours of more effective work. Really impressive how easy you can lift you body 3:1 without friction. I will try to switch the twin pulley with a Petzl pro traxion. This has a cam on the pulley that you can lock off. Meaning that it ascends like a croll with a pulley. Capturing your progress. This allows me to ascend with the system as rads. When I am at the ridge i connect my hitch on the third leg and flip open the cam on the traction, and it works as a normal pulley. But then there is tending the hitch.. Will play around with that.

The button works ok when decending without much weight on the rope. Its tending slack when moving around thats bothers me. The ropes gets real dirty and becomes a bit stiffer. Jamie. That shunt idea could be worth a try. Have both shunts and grillions lying around.

I read this in the tread "my first go on SRT" It kind of what I am struggling with the ID at the moment when walking down roofs. Bad bits- When branch walking without much weight on line, the rope wrench added a lot of friction so couldn't get more rope through without pulling hard.

I guess it was designed so that you can operate your hitch under the full weight of your body on one rope. When I am doing this kind of work I use the croll a and ID.

Thank you guys! Will play around with different hitches and a micro pulley. See how much they bite without a wrench. Must say that Bulldog device looks good:thumbup:

The ropes are semi static. The Asap is used in combination with an energy absorber that engages when there is to much energy created. I actually stayed away from the rig because it looked like it had a tighter bend radius on the ropes than the id. My situation could be compared to an easy limb walk. Just lean back in the rope as you walk out on a branch. Maybe a wrench is needed for this to. I dont know.. The only legal issue is to use a fall arrest system, wich I do.

Do you with legal issues? Or getting my weight of it? None of these two would be an issue. As I mentioned, I use a fall protection system aswell. [ame=http://www.youtube.com/watch?v=zjWbzhzJJLE]Using the ASAP on an inclined surface - YouTube[/ame] The Trango looks like the same funtion of an ID or Grigri. May be hard to feed rope when its very dirty.

Will look into the tips posted. Thanx. And yes, a prusik is not industry legit as opposed to a ID. But this kind of work is really rated as fall protection jobs. Meaning that my backup rope with the running ASAP is enough as long as I can somehow stand on the roof. The "working rope" is for my own convenience. So I can lean back in the harness and relax as I work.

Yes it would be a single rope method. Though there is a secondary rope as backup. But thats just a ASAP running problem free up and down as i go. I might try a friction hitch with a micro pulley under. As a lot of my weight is on the roof itself, maybe a rope wrench is not needed to take some friction from the hitch. As that is my understanding of this product.

Hello forum members! First let me say that I am impressed with the skilled work you guys are doing. I dont think people understand before they are actually up in a tree with a chainsaw. I have been doing some minor tree work, but this topic is not directly aimed at this. When I am off work in the offshore industry I do some work onshore. Lately its been alot of roof cleaning with a pressure washer. Roofs then gets a waterproof coating and a new layer of paint. I have been using the industry standard Petzl ID and ASAP backup. The issue is that I am spending some time wrestling with the ID. Problem is that if the pitch of the roof is not steep, I am not putting that much weight on the ID. More leaning back on the ropes than hanging. So decending means that I have to push away with my feet to get it to feed trough rope. And If I pull to much on the handle it goes into panic mode:sneaky2: Ascending is a real pain. If I take a step and the rope gets slack its hard to pull a dirty moss covered rope through it. Usually I clip in my croll and walk up the roof grabbing the rope as I go. Building a pulley system like rads does work, but suddenly I have 4 ropes in front of me.. I was thinking maybe some sort of prusik system could work both up and down the rope? It has to work on stationary rope, as I would not like a running rope over the roof ridge. Could I use a "rope wrench" system but without the wrench? Remember I am not hanging on the ropes with all my weight. I am using Singing Rock R44 ropes. Believe its 10.5 mm. This is my first time experiment with none mechanical devices.. Edit: English is not my language. So please be kind:-)