Technical Rope Rescue

Comment

Comment by David Malcomson on December 19, 2010 at 8:46am

I'm a huge fan of the CMC MPD. In this area, many people have bought into the TWP belay. However, our MABAS TRT will be switching to the MPDs for both mainline and belay operations.

Comment by John D. Calamia on December 18, 2010 at 9:30pm

That was suppposed to say Tandem TWP (triple wrap prussik)!

Comment by Jeremy Fox on December 18, 2010 at 8:50pm

John, I will ask Ryan if it is ok to give you his email address and you guys can move from there. I've never heard of the TWP belay. I first started with a Mariners load releasing hitch until I was taught the Radium now my preference is a set of fours but my department (whom I am a team leader) has decided to stick with the Radium. Like you said easy to tie, lots of room for multiple lowers and yes the MA

Comment by Jeremy Fox on December 18, 2010 at 8:43pm

Mike, I would be interested in seeing how you handle the I'D in a belay setting. Do you just hold it at 90 deg the whole time you are lowering on belay? and the person being lowered pulls on the belay line? I was always taught the the belay line should always have a slight amount of slack in it. Just trying to better understand the operation.

Comment by Jeffrey Post on December 18, 2010 at 7:28am

 I have not used to Petzel ID, I do like the CMC MPD,, it may be a tough sell at work. I just got them turned onto the idea of TWP's.

Comment by John D. Calamia on December 18, 2010 at 7:14am

Thanks for the info Jeremy & welcome to the group. I'd love to talk with your friend regarding the Lyfe Pulley set up. I was a pretty hard core TWP belay guy, but the more I've been able to play with the ID'L my preference is changing. I'm finding with the guys I work with, a little training seems to change their toon as well. As far as my preference for the LRH, I'm partial to the RRH. Simple to tie, & a built in MA. Stay safe.

Comment by Mike Donahue on December 18, 2010 at 7:06am

That's the idea, when held sideways in a belay application the rope will run freely keeping pace with the lowering line. When a sudden load is applied it will snap back into it's nutral position locking the load in place. This is I application that had been tested and proven to work. Outside of the testing done the dimple physics of the ID application will dictate it be put in the locked off position should a load be applied.

Comment by Jeremy Fox on December 17, 2010 at 10:40pm

Mike, Don't get me wrong I really like the Petzl I'D but I do prefer a tandem prusik belay set up. Yes you have to use a LRH but if you the I'd for some reason turns 90 deg it is no good. The rope just slips. If the belayer is doing his/her job with good technique there should be no need for a LHR and the prusiks should work great.

Question for you all out there? What do you use for a load releasing hitch?

Comment by Mike Donahue on December 17, 2010 at 8:10pm

Ahhh...I love the chatter regarding the Petzl I'D. Ditch the tandem prusik belay and if you haven't.... try the I'D. You can eliminate the need for a LRH and you can lower with the belay! Saves time and equipment. Just my 0.02.

Mike

Comment by Jeremy Fox on December 17, 2010 at 4:05pm

oh yeah and Jon, I have found that the best way to use the Petzl Id is by making sure you don't use your whole hand to activate the lever. Just use 2 fingers to pull on the lever. If you use your whole hand you pull with too much force.

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