Moderator: Tim White
chh wrote:Really the most important part is not allowing your upper ascender to be out of reach.
PeterFJohnson wrote:
Dean -
Tying a footloop is a good solution to a stranded upper ascender, but you don't even need to go this far.
http://www.youtube.com/watch?v=PT53S0Gcj70
Footlock technique, like that in the video above, allows you to wrap the rope around your feet, without using your hands, and stand directly up on that. This can come in handy at other times as well.
PeterFJohnson wrote:CHH and OpenTrack -
Correct me if I am wrong, but the way I see it for most people their legs do not determine their stroke length when frogging. Your maximum theoretical stroke is determined by the distance between your croll and your upper ascender when you begin to stand up. This is in turn determined by two things:
1)How high up the rope you can push your upper ascender when you have your croll weighted(i.e. How long your arms are).
2)How low your croll is relative to that position.
So for your average person stroke length is actually determined by their arm length no? For your legs to come into play, you would need to have short legs relative to the length of your arms. A quick non scientific measurement of my body seems to indicate that I would stand up about 30' in a stroke. But I know that I get far less than this - something closer to 22 or 23.
From this, I agree with chh that your long cowstail should be as long as you can get it without being able to strand your ascender out of reach. This way you are not letting your long cowstail shorten your stroke. But I would be interested to hear other's opinions - perhaps the most efficient way isn't to use your entire stroke in the same way that when I run I don't take the longest possible strides I can? Just a thought.
As for sizing footloops, I have found the ACT method to be pretty effective. But that's just me.
As for putting a carabiner in between your maillon and your spelegyca, I would be pretty concerned about cross loading my biner as reaching some biners cross loaded rating(7 kN or so) is conceivable.
Dean -
Tying a footloop is a good solution to a stranded upper ascender, but you don't even need to go this far.
http://www.youtube.com/watch?v=PT53S0Gcj70
Footlock technique, like that in the video above, allows you to wrap the rope around your feet, without using your hands, and stand directly up on that. This can come in handy at other times as well.
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