Rusty s loops

[xarax]

   Starting from the very simple, very interesting, but not very stable Rusty s bend (1)-(3), we can tie 4 post-eye-tiable (PET) different eye-knots - as we can always do, utilizing symmetric bends with links topologically equivalent to the unknot. Till now, I had tied only one of the 4 possible Standing end / Tail combinations some time ago (0), but now I decided I should better get a more comprehensive picture. So, this time I tied and tried all of them in my laboratory, by loading them with a carefully calibrated alternating load ( = my full body weight, jumping up and stepping on the eyes of the eye-knots tied on 8 mm rope and hanged from the kitchen s ceiling - 64 times on each one... ). All those 4 eye-knots were easy to untie - perhaps because they offer so many collars, and one can always find one that he can twist or push and then release easily.
   It turned out that the two of them ( the 1 and 2, in the attached pictures ) retained the compact form of their core they were dressed in initially to a greater degree, while the other two opened up a little bid - especially in the eye-knot tied on the yellow rope, the Standing end dragged the tail, so one can distinguish this wide opening around the Standing end.

0.   http://igkt.net/sm/index.php?topic=19.msg21149#msg21149
1.   http://igkt.net/sm/index.php?topic=2694.msg16630#msg16630
2.   http://igkt.net/sm/index.php?topic=2694.msg16633#msg16633
3.   http://igkt.net/sm/index.php?topic=2694.msg16684#msg16684

[xarax]

   The two eye-knots that opened up a little bid, and did not remain very compact. One can see the wide collar around one eye leg, at the first, and around the Standing end, at the second.