Re: [leroydb] Who needs a fancy smancy tesca rope swing version 33 1/3
ok...
the rope they are useing looks to me to be about 5 ropes bundled to gether,
greebn man was righ about the UIAA fall testing requirments for ropes, its is a climbing testing company that does that.
whoever said 'the longer the fall, the more the rope stretches' was correct,
a 1.7 factor fall means that you fall 17' on 10 feet of rope.
factor is just a ratio.
now, for climbing purposes, a 1.7 facor fall os about as bad as you can get, the worst being factor 2 fall. meaning you would be leading, be 10' abouve your belay/anchor, and would send. falling past him, another 10 feet, so a 20' fall on 10' of line.
this jump in the video, is about what seems to me, an ACTUAL fall factor of less than ONE.
However, there is a lot more to it than that, this is a SWING, meaning the fall is not being abrorbed by the rope, pretty much just like frasca.
i would say the THEORETICAL fall factor of this jump is around .1 (1/10)
I could show you the 'math' for this stuff, useing graphing and shite, but really, the only way to tell how much force is on the line is to use a load cell. Math, can only give you the fall factor. you could get kinda close to force, but its not worth it.
(trust me, me and the boys have spent 6 years doing that stuff)