Hi lyznicek and welcome.
couple of thoughts on what you're trying to do:
What are your thoughts on pulleys? I use a four pulley system, but do you really want to de-power a 5-6m kite I think you should build a fixed bridle at that size and get it flying. You can add a de-power system at any point after that it is easy to add to a built kite.
As for bridle material I would always go for proper bridle line I use @40 daN line for secondaries and @60 daN for primaries, fishing line has different stretch than bridle line.
Handles or bar :D there are two things to consider here, firstly if you de-power it then you will get more power directed down the brake lines, whilst it's not a problem some may find it harder to master on handles. If you go for fixed bridle, again handles to get it flying as you want, putting a bar straight on you may find it difficult to tune the kite.

Thanks for welcoming me BigE,
I can say I want something very similar to your NASA. You have the keels and depower there, right? As beginning I am using spreadsheet from http://users.telenet.be/claeskites/page13%20NPW21.htm But I would like to use less bridles (with keel or cascades) for less pulleys in the future depower. Can I ask you for your bridling?

The depower in my foil is shown in the picture attached. Its not the usual one with separated rows, but its working good. So I am thinking about something similar or standard UDS (number of pulley depending on number of rows 4-5 preferably)

Yes the big 11.5m NASA has 5 point keels and a UDS on it although my signature pic of it is before I modified it.

To be honest I'd go for more of a standard UDS, that's what I use, there is a but, I keep the wing edges static and just let the main panel alter it's AoA.
Careful with the spreadsheet you have, I started with it and found some errors.

The keels are a bit more tricky, I don't have an "automated" way of creating a template, I draw the main bridle lines out in MS publisher full size and then draw the profile shape on with 5 keels and print it out. I know there must be a much better way but its a trade off of time and effort. I have a copy of keels for a 6m I have used on two builds.

here is my very little 1.1m2 kite

sadsack

Ho ho ho very festive :D Does that mean Rudolph will be taking a rest?

yes, have you been a good boy?????
making bridle is so much fun



I can't wait to make a nother



But I do have a helper.



here is a old table I picked up, great for bridle,layout and cuting.

You need to get your helper a red hat :D I often wondered what Father Christmas did during the rest of the year! :D

Strangely enough I find doing the bridles very therapeutic.

I wish I did!

Redirecting...

bigE123....Have you had any more use of the kite in your Avatar for a more detailed report on it's performance? Curious about upwind ability in buggy .

Had a bit of a break recently from the kite side of things, plus going for a 10m which was primarily built as a low wind machine and as you would have guessed the wind has picked-up. That aside the the last time I was out with it in the buggy it felt like my Blade VIP with similar edge performance but obviously with the bigger size more power, I've a feeling it may not be as fast across the window.
I did think and say out loud "No more of this type of build".... I've started a new 6m!

The reason is I am really impressed with it and want to be able to compare it directly with both an NPW and a foil of the same size to find out how it fairs. I learnt a few things from the first build and have made a change to the wing tip shape to see if it improves the turning. I did find sometimes on a tight turn or turning in a lull the tips sometimes loose inflation, it didn't effect the performance just being a bit of a perfectionist, I managed to minimise it with a bridle change but wanted to see if changing the shape improves things.
I also put a de-power set-up on it, which I need to spend more time flying with.

So here are the first ribs for the 6m kite, only 12 more to go!:

Ribs? .... like the FS Peak has ribs...?

What design type is this?

Your designs away from the NPW are most interesting...

Ribs yes like the Peak and the others that will be hitting the market before too long, it's a design I found for a paraglider which I altered to make it more suited to power kiting.

Strangely enough though from building this I have carried some of the "lessons learnt" back to my NPW quiver :D

https://c4.staticflickr.com/8/7473/15282844513_14828fc113_b....

This is a picture of my latest sewing project. It is a 4 meter npw9.

Susan (npw goddess)

very nice, like the colors:evil:

All ribs for the 6m now complete :D Next phase the panels, pic showing one side ribs:

bigE123 that is going be a nice sail.

4 meter npw9 build.

Susan (npw goddess)

And here is a video of Susan's great work in action.

Randy Did you make that kite? Very nice. What was your riding on,skates or skateboard? I am going have to get me that camera.
what formatt does the camera save the movies in, DVD.
Neat looking kite, you done some sewing on that one, very nice.
renny

Renny - Susan (the npw goddess) made the kite for me - she get's all the credit - its the one in the picture in her post above mine. (I edited to make that more clear.) The camera is just the original GoPro in this case. The format is the regular windows format, which I pull into Windows Movie Maker. There is always a lot of editing. In that case, I had about 30 minutes of video and picked only a few good minutes, though that was a good day for flying.

I was using a MBS Atom Mountain Board on that particular day. The NPW 4 meter was on 25 foot lines.

Great, I have not been on my board for a while. The beach is real hard now so if we don,t get any snow I am try my board on the beach.






One day I am going to get some binding for it.:bird:

Here is a picture of my latest nasa wing. It is a npw9



Susan (npw goddess)

Like the colors!
Is that about 4m?

Sorry, I forgot to mention the size of the kite. It is a 5 meter.

Susan (npw goddess)

Hmm, my npw9 is suppose to be here tomorrow and winds are forecast to be 10-20 with a possible storm. This could get interesting I hope. Time to remove the short lines and put the long ones on the handles. I'm feeling a buggy day. It's the red and blue one Susan made in one of the above posts.

Got my first look at Susan's npw. As no surprise, build quality and material are great and thanks to Randy, it's still as crispy as a new dollar bill. I love the colors as well as they are my kids high school colors. I first took it to a new location on a side of town I was working near. The spot was terrible, I wasn't sure if it was me, the kite, or the spot, but it was definitely the spot as I later figured out. After work, I went to my usual spot and started with long lines and handles. It flew great once I got the feel of where it liked to be balanced. I still need much more practice on the handles to get the most out of it. I wanted to see how it would fly on just 2 lines so I just disconnected the brake lines from kite and handles and combined the bridles to the power lines. I was surprised to see that the knots Susan had on the power and brake bridles were perfectly balanced as it flew great without any additional knots needed. This would not be an easy task as there seemed to be a precise sweet spot when I was flying off handles and since Susan usually flies quad I wasn't sure if she would have balanced perfectly. So I have no doubt that it will work well on a bar with long lines. I haven't got to short lines and longboard yet but that will be next. Thanks Susan and Randy and I look forward to streetkite and buggy trials.

Edit: wind was only around 10 unfortunately or I would have already used it in the buggy.

Glad you liked the SusaNPW. I may never be able to build one half as good, but I'm going to try. Got several long summer months ahead with little wind in sight. What better way to spend my time than building NPW(s)? I started my 2.8 NPWater 9b today.