Tying Knots and Sewing Loops in Nylon Strap

[JohnCoker]

Another how-to video, this time on finishing the ends of Nylon strap for recovery bridles. This includes tying a knot and sewing a loop. (Running time 11 minutes.)

 

[T-Rex]

Thank you John!! That is much easier than the way I was thinking it had to be done. Now I just have to track down a sewing awl & thread

 

[Target]

Thank you John. I find your work is an inspiration for me.

 

[accpool]

nice how to. i didn't realize it was that easy to make a sewn loop. will be getting that tool. thanks for your practical and precise solutions.

 

[TheAviator]

As far as knots go, I recommend putting one extra turn in your overhand knot to make it a Figure-Eight on a Bight. If you're feeling clever, you can also eliminate the quick link and do a Follow-through Figure-Eight Loop. The Figure-Eight knot has a higher efficiency and is easier to untie after loading than the overhand knot. It will still lay flat in webbing as well.

The Alpine Butterfly is also handy when you need to attach something in the middle of your line. I haven't tried it with webbing, but I don't think webbing will lay flat in that knot.

https://en.wikipedia.org/wiki/Figure-eight_loop
https://en.wikipedia.org/wiki/Alpine_butterfly_knot

 

[user 8716]

The Alpine Butterfly is also handy when you need to attach something in the middle of your line. I haven't tried it with webbing, but I don't think webbing will lay flat in that knot.

I have tied an alpine butterfly/lineman's/double lineman's knot it webbing, it most definitely will not lay flat. But with tubular nylon I found that if you force the nylon to be in the "tube" form when you tie it it comes out reasonably flat.

 

[o1d_dude]

Nicely done. Thanks, John.

 

[kenstarr]

I don't ever worry about sewing the harness. I do use overhand knots extensively with webbing. With materials such as kevlar, I also really like using the butterfly knot and the bowline. In one of my previous incarnations I was really into caving and picked up the book, "On Rope" It is fantastic for anyone who deals with man-rated rope requirements. Many of the principles in that book can be directly applied to rocketry such as what happens when shock loads are applied. Excellent video, I probably WILL sew the harness when I go for L3 next year or so.
-Ken

 

[Jmhepworth]

Te best reason to sew a loop is that it weighs a lot less than a knot. That's why climbers like sewn runners instead of tied ones. But every climber I know always has extra webbing to create a runner when a sewn one just doesn't fit the need. I suspect a sewn runner is stronger than a knot, but I don't have any data on that. Knots weaken the webbing.

 

[scsager]

Wow - great timing!!! My order from Strapworks.com just arrived today.

 

[kenstarr]

Te best reason to sew a loop is that it weighs a lot less than a knot. That's why climbers like sewn runners instead of tied ones. But every climber I know always has extra webbing to create a runner when a sewn one just doesn't fit the need. I suspect a sewn runner is stronger than a knot, but I don't have any data on that. Knots weaken the webbing.

Nevermind a sewn loop is also much more compact (volume) and looks/is professional too!
-Ken