Looking for a knot that would keep the end of the rope from pulling back through a section of pipe. I?m making a pulk sled for a camping trip this coming weekend the rope(s) will be tied to the sled and then ran through a pipe and attached to a waist belt. The pipe that the rope runs through is in three sections and what I would like to be able to do is have a knot on the waist belt side of the rope that can both allow for the rope to be tight when in use and then allow for slack when not in use so that the sections of pipe can collapse. It could be a separate piece of cordage or tied using the main ropes. A prusik knot would work but I would prefer to have the main rope attached to the belt. I?m picturing a knot that could replace a plastic draw cord lock.
If I’ve understood your request,
you want to tie some knot into a line that rungs
from your waist attachment point back through
some tubing of a pulled sled.
Is it possible to put a bight/doubled-rope through
the pipe? If so, you could do that and have it turn
around something kindly round at the rear end,
with a stopper up at the line’s U-turned-&-run-forward
end; when loosening was wanted, you’d pull this stopper
away from the tubing.
Otherwise, hmmm, one might try to put in a Slip-knot
stopper flush to the tubing, and then tie off the line
going to the waist with a Bowline or other… onto
the Slip-knot’s slip-bight/eye.
Or, perhaps with less potential too-clever-by-halfness,
have the end of your line (i.e., that at rear of sled)
make the tightening of e.g. Ashley’s #525 to pull it
back flush into the front of tubing, and tie off the
end somehow back up into sled?
[for #525, but Ashley hides its symmetry w/crude illustration]
Some good ideas Dan. I had currently been keeping the tension using a slip-knot so the addition of a bowline to keep the slip-knot from collapsing would be an easy solution.
I also like the bight/doubled rope idea.
Going to try both tommorow and see which I like better, it?s supposed to be below freezing all weekend so will need to see if one is better than the other with gloves on.
#525 is a (topologically speaking) “Fig.9” knot;
there is also a form that is the OH pretzel-form
but with more ends-twisting (the Fig.8 being
between the two, twist-wise). This pretzel form
itself can be dressed into something that will
withstand considerable tension (to do <what?>
is a then separate question!). It can take me
some bit of fiddling trying to convert from one
to another, though I know that it can be done!
(Well, from the ‘9’ shape to the center-twist
form is simple; to the 525 form, not so, for me.)
And see #525 as what COULD be wrote in the #1425 ends joint; and a corresponding eye knot
will have 525 for the SPart & outgoing eye leg,
but needn’t that much knotting to finish so run
the returning eye leg just through the OH state
(as in #1425) --an NSUExtremites knot, too!
Oh, another idea :: tie that Slip-knot … (there’s a guy with some thin solid cable-pulling
webbing in his belt buckle L : King dubious at best
at a public computer internet site right now … ;D )
.:. Heck, scrap that.
If the U-turn & stopper can work, that has the advantage
of being pulled tight when loaded, which seems well better
than hoping to have made the tube-tightening tensioning
with a knot that remains tight enough when the loading
shifts to pulling on it in a pulling-away direction.
And there might be some chance of running the U-turned
end back up to the front stoppering point on the OUTside
of the tubing (conceivably with another line!? --and some
friction hitch put in of this run-back line to help keep it
set back against the front tube.
King dubious at best