I tested a number of bend and loop knots for jamming and thought I would share the results here. I used 3/16 inch braided polypropylene rope rated at 60 lb working load limit. I cut the rope into short pieces and tied a series of knots, loaded the rope to 180 lb. then attempted to untie them. Here a…

The “#1425A derived Riggers X bend” is one I found for myself several years ago. I liked it enough I did trials in various rope materials (not dynamic rope at the time). I never trialled/documented it properly then (even from a home-tester perspective) and the material I used in the display was once…

per Mobius: The "#1425A derived Riggers X bend" is one I found for myself several years ago. The term ‘Riggers X bend’ (derived from #1425A) is one that Xarax I think prefers…and I believe that he was first to investigate the effect of crossing the tails in some known bends (I’ll check with him…no …

Thanks for the suggestion, Agent Smith. I’ll do that test soon. For some reason I like that whole series of interlocking overhand knots, and now I have another one to learn. I also want to test the Kalmyk loop (slipped version of the Cossack knot) and also some hitches. My testing is definitely in …

agent_smith post:14: So I think your naming the structure ‘infinity bend’ may be in the same situation as your alleged ‘M’ bend…which Xarax also predates (did you check the link he gave?). Xarax did not originate this bend. It had been discussed on this forum prior to Xarax ever taking a pic…

per Mobius: Xarax did not [b]originate [/b]this bend. I checked my previous post and I couldn't find the words; [i]"Xarax originated this bend"[/i]. Where did you find these words? per agent smith: ...and I believe that he was [b]first to investigate the effect[/b] of [b]crossing the tails in some…

agent_smith post:14: The term ‘Riggers X bend’ (derived from #1425A) is one that Xarax I think prefers…and I believe that he was first to investigate the effect of crossing the tails in some known bends (I’ll check with him…no doubt knotsaver will also confirm/refute shortly). I would be muc…

Although this is now somewhat drifting off topic - and distracting from Harolds good work…I nevertheless feel compelled to reply as follows… [and I hope Harold finds time to conduct hobbyist/enthusiast testing (formerly backyard style testing) of the #1425A derived Riggers X bend :slight_smile: Eve…

agent_smith post:19: Although this is now somewhat drifting off topic … per Mobius: I would be much happier for Dan Lehman to name this knot, not have "Riggers X Bend" [b]thrust [/b]upon [b]us[/b] Xarax made this comment about what constitutes a new knot versus a modification to an existing k…

Regardless of the who, what, where and when stuff, there ought to be some smart idea or technique to qualify and determine a jamming threshold. Some tool(s) that measures strain, say a clamp coupled with a tension device to a particular knot component (determined ahead of time). Or could a certain …

I certainly share the concerns of SS396 and others about the scientific rigor of my “backyard” testing, and I am literally doing it in my back yard. For one thing, my results are not always repeatable. Sometimes the same knot will jam or not jam in different trials, for reasons unknown to me. Also, …

Knot jamming test

Practical Knots

mobius 21 July 2018 23:10 18

I would be much happier for Dan Lehman to name this knot, not have “Riggers X Bend” thrust upon us.