"That's the first time I've seen the 540 catch it properly!" Have you had problems with this particular 540? I wouldn't want to hear this comment about a piece of my equipment that's in service!
Fair comment. Actually, it wasn't me who said that. We have some 540's for teaching/demo purposes, but our "standard" is T3WP's. The guy who made that comment is an extremely experienced instructor and rescuer, and I believe he's had issues before with 540's being slow to catch shock loads. I don't know for sure, and can't really comment further because I don't personally use the 540 by choice.
Hi - that's a tough one to answer. This was a live demo given to cave rescue students during training, and obviously wasn't intended to be a scientific test. We didn't weigh the rock, but it took 3 people really cranking on a 3:1 to lift it off the floor. Therefore I'd say it was probably about 400-500lbs (~200kg or so). The pit is 120 feet deep, so the length of the line would probably have been about 100 feet (30m) or a little less. Hope that helps you out. Cheers!
"That's the first time I've seen the 540 catch it properly!" Have you had problems with this particular 540? I wouldn't want to hear this comment about a piece of my equipment that's in service!
mrfixitjr 4 years ago
Fair comment. Actually, it wasn't me who said that. We have some 540's for teaching/demo purposes, but our "standard" is T3WP's. The guy who made that comment is an extremely experienced instructor and rescuer, and I believe he's had issues before with 540's being slow to catch shock loads. I don't know for sure, and can't really comment further because I don't personally use the 540 by choice.
NZcaver 4 years ago
Cheers for the info, much appreciated.
kiwionarope 4 years ago
Can you add anymore details i.e. what was the weight of the load? (600 lbs?), how much was the drop and over what length of line? Cheers
kiwionarope 4 years ago
Hi - that's a tough one to answer. This was a live demo given to cave rescue students during training, and obviously wasn't intended to be a scientific test. We didn't weigh the rock, but it took 3 people really cranking on a 3:1 to lift it off the floor. Therefore I'd say it was probably about 400-500lbs (~200kg or so). The pit is 120 feet deep, so the length of the line would probably have been about 100 feet (30m) or a little less. Hope that helps you out. Cheers!
NZcaver 4 years ago