Applying sleeving new kite line.

Sorry about the echo in recording. As I was creating some new line sets, I decided to capture video since I knew people had recently asked about the process. Playlist: • Kites
Demo playlist: • How I Fly Alone with m...
Kite lines have a naturally weak point on the knots tied at the loop. Sleeved line distributes the tension and pressure to increase the maximum tensile strength before breaking. I also use figure 8 knots which handle tension better than an overhand knot, and are easier to untie after they have been under tension.
I did not show laying out the lines and cutting them because it is a potentially time-consuming process. Lay out the length you need, which could be anywhere from 2 or 3 meters (6-12 feet) for short lines, out through 45+ meters (150+ feet) for long lines. Always pre-stretch they lines by applying a steady pull to help reduce the amount of stretch you see during flight. You want to apply about 80% of the line's test strength; for 50# line gradually pull about 40#, for 100# test line pull about 80#. Gentle rocking on the line can get some of the initial stretching complete. For long kite lines, spectra may stretch out several inches as the fibers bind closely together under tension.

[@DJSlimzilla]

I know Im late to the party. Can you point me to what sleeving line I need for 50-90# flying line. I cant find what type of line and size to buy as sleeving, I have black and white Shanti sleeve but can not find others, I would really like to get what you have there White/red and White/black. But without know the size and type I am having a tough time sourcing sleeving material.
Also do you know any other sources for 100# "Bridle" line other than Laser Pro? I can only find a single source for laser pro and am looking for better options.
the DIY world seems to be dyeing off everything is single use. Buy a ready made line set, buy ready made bridle sets. Sheesh I like to do things myself its more fun.
Thank you for your help.

[@bryanskiteflying]

I don't think there are weights of sleeving line. It doesn't provide support for line tension, instead it thickens the knot. For colors I've seen various shops carry black, white, red, and blue, plus with threaded colors like in this clip, plus I've seen some sleeve in neon colors. I can't remember if I got that specific line from AWindOfChange.com or KitesAndFunThings.com, you can contact both and ask what they have in stock. There are plenty of other great shops that sell bulk line, so also check local and shop around to see what shops have on hand and what they cost.
Regarding bridle line, Kites and Fun Things has several strengths of it and AWOC might as well, again, contact them for what they have in stock or can order. Other major stores likely have it in stock or can order it for you.
If you only need one then ready-made sets are great. If you need many of them made, there is a cost savings overall but a big cost to the bulk purchases up front. You might be looking at $80-$100 for a single premade 120' quad line set (the standard team flying length), or $350 for the materials to make six line sets, plus time to actually create them including pre-stretching, measuring, cutting, sleeving, balancing, and winding.

[@DJSlimzilla]

@@bryanskiteflying Thank you for your reply. I have dealt with A Wind of Change before and I'll give them a call. I appreciate it.
A reason I was looking for bulk is that I am working on DIY kites and was looking for these supplies to make custom Bridles and Fly lines.