bigE123, I am going to use that Zbridle on this kite I am making now. I like the 9 a lot.
renny

Quote: Originally posted by sadsack

Nice Randy I got my kite going today too. it is a 5.5M2 about 6 feet high and 11 feet wide.:puzzled:

That's big. Show us some pictures or videos!

bigE123,

Well...built in curl after all! Your getting closer to a Peak design.
The stiffeners I was referring to are located near tips of peak...(not sure.. but may be used there to stop flutter, tip tuck, increase projected area-make more flat..?)

Anyone near you own a Peak..(yet) you could try and compare..?

Wishing you great success....
--------------------------------------------
sadsack,

Nice job on your 'girl'.

keep it up!

Black Kite is here

making the center panel




laying out the wings




Cutting the wings out




sorry for the bad photos, my old camera of 15 years gave up the ghost today. So there may not be any more photos. Have no money to buy a new one.
Here is black kite Layed out in the basement
6.5 feet high and 13.5 wide, sorry i don't do CM, I am to old for that.






6.5M2
That is it for now.
renny:frog:

Quote: Originally posted by skimtwashington

bigE123, Well...built in curl after all! Your getting closer to a Peak design. The stiffeners I was referring to are located near tips of peak...(not sure.. but may be used there to stop flutter, tip tuck, increase projected area-make more flat..?) Anyone near you own a Peak..(yet) you could try and compare..? Wishing you great success....

I think the plans I used may have been the Peaks starting point? The stiffeners run from the LE to the B bridle point. They keep the nose raised, (which is something I carried over to my NPWs), otherwise the kite would need more brake pressure / higher AoA to stop it collapsing.
It's a pity I don't know anyone with a Peak to compare performance with. My 6m will be fb so a comparison would be difficult and not really prove much.

Renny - very stealthy looking. Looks like you have your own "skunk works" now!

night time flying

Got the Single Keel Parawing up and flying today. Here's a few pictures - a cold, gray and misty day, but windy (10-20). A good day for flying, but not so much for the flying pics.

[file]8762[/file]

bigE123, I am making the line set and handles for the black kite. I have some 200 pounds spectra line for the top control lines. I should be able to use 100 or 75 pounds for the brakes or less.
What do you thing? That spectra line cost alot. I would like to use something that is cheaper for the brakes.
renny:alien:

Renny - if you look at Tom White's calculator on the bridle page, it will compute the line strength you need for brake and power lines.

Nice kite, I build 3 of then, one was 8 feet wide.
here is another fun kite

http://2e5.com/kite/npwc/

EDIT:
here something you may want to read.

http://www.australian-hang-gliding-history.com/patents/nasa-...

@Renny - that's some heavy reading! I've looked at the NWPC kite, but seems like the design is still evolving. I'd love to see the picture of your 8ft wingspan model.

I noticed a lot of flutter in the wing segment next to the brake lines when they are under tension. Do you notice that? Perhaps my brake adjustment is a bit off.

Here's my video du jour.

LOL very nice, it is so hard for me to get photo, I never can find anybody to take them. How did you take your movie, do you have a camera that is on your head?

Yes - I wear a GoPro helmet mount. I have a really small camcorder which I just put on the ground sometimes, or mount on a tripod. My daughter can be persuaded to do camera duty once in a while.

Here some photos of my 4 feet by 8 foot delta single skin kite, they are not real good. then their a photo of the first on I made on the table. It was 3 feet by 6 feet.

Thanks. That's interesting.

I should have had black kite done by now, but been doing other thing. I went back to the beach yesterday and flew some more. Yesterday was a great day. Going to get back to the black kite on Fri. Hope to have it done next week and flying. We may get some snow and I want to use it for some kite skiing.

See Randy I was thinking of you, and said to myself ,self you fly that single skin delta experimental kite. So I did. I could not find the big one. Last summer I gave the boys club a pile of kites. The big red delta must been in that pile. So here is the 6 foot one, same as above, but beet photos.

Well did not work on black kite yet today, been flying. I know I want the black kite to ski with, but there is no snow yet. here some photos(much better) of
my experimental kite, the 4 line delta.




This kite is fast and very fun to fly.





If you just move any of the lines just a bit it jumps to the command.









Next week I will be busy on the black kite, You can't blame me for flying and not building.
Bad renny :evil:

Quote:

bigE123, I am making the line set and handles for the black kite. I have some 200 pounds spectra line for the top control lines. I should be able to use 100 or 75 pounds for the brakes or less. What do you thing? That spectra line cost alot. I would like to use something that is cheaper for the brakes. renny:alien:

Hi Sadsack, for all my builds I use cascade bridling, the primaries I use 60daN (60kg / 132lbs) line and 35daN (35kg / 77lbs) for the secondaries. If I was building direct bridling then 35daN line for all the lines. I'm quoting this from memory, for the NPW 9 it has 4 brake bridle lines so the load it could handle on the brakes alone would be 140 kg ( 4 x 35kg) each side. Now think about your flying line line strength, as you are thinking of 200lbs for the power line I'd still go heavier than 100 or 75lbs, this will give some lea way if you are fully powered up and drop the handles and the killers kick in on the brake lines there is still a lot of power before the kite back stalls. Just my thoughts which have stood up to lots of conditions without any problems, I always err on the slightly heavier side of line but not line which goes above the collective load of the bridles.

Sorry about the mixture of units but I work in Kg as that's what all the European stuff is quoted in.

As for my build..... it's taken a back seat due to something called Christmas! Now have 68 bridles made up and 46 to go, decided to go the whole hog this time with the lines, all ends sleeved with a loop for connecting together meaning no knots! I'll post some pics before I connect up to the kite.

I hope you had a nice and fun Christmas, kite(my dog) and I hade a very nice one. the weather was very warm for this time of the year, we flew on the beach. I used 250 pounds line on all 4 of them. The black kite is 1/3 bigger that the Golden girl. I think it will pull pretty good.

Can't wait to see some photos.
renny

Back at it today - did a 1200 mile round trip to visit family over the last 4 days. My new project is a 2 meter NPW 21, trying to sew the whole thing this time.

Good luck buddy! can't wait to see the results.

Hey,Randy that is great, what part of the US do you live in?
Any place close to Michigan?:alien:
:karate::puzzled:

I live in the Atlanta, GA area. Just visited Indiana though (not too far from Michigan).

Progress on the NPW 21 is plodding - my sewing machine (acquired from Goodwill) jams a lot. I am learning how to unjam it.:D

I have got half a wing complete. If this goes well, I now have some real ripstop which I'll put to use on the next project.

I just live 25 mile north of the Ind. and Mich. state line

Here is my 2.0 m NPW 21 first flights youtube. This was a lot more work and time consuming than my other kites, but mainly due to sewing machine problems - frequent jams, whatever. But it ended up being sewn instead of taped.

There was mist and rain while I was flying it today, so that may have impacted things. I also found that it flies quite differently from the other NPWs. As @rectifer mentioned in another thread - it seems to work better w/o the constant brake bias - took me a while to figure that out. (I thought I had goofed on the bridles, but they seem correct). Used the German webpage plans.
http://home.kpn.nl/walter.van.iterson/npw21/



Wind was 5-10 or so. It does seem to have a lot of pull - as soon as there is enough wind to fly it wants to grab you! Hoping for a nice day to compare to my NPW 9 1.8 m. It actually flew a bit better than the video might suggest since I had to edit out a lot of the footage when it was out of view.

It's finally finished!!! Now need the rain to stop to hook up the lines and give it a test flight.

For this build I decided to go the whole hog with the bridles, no stopper and slip knots for the cascade, I sleeved all the lines where they connect together:
Starting with making a loop then measuring, cutting and numbering the line:


The C/D bridles are three C's, three D's to one primary:


The primary loop is passed over the secondary loops and the free end passed through:


Then the secondary loops are twisted, the free end passed through and all pulled tight:


Do until all 114 lines are connected then add to kite :D

Good job, Randy. Flies well!

bigE, nice so far, can't wait to see it in the air!

Well done Randy welcome to the NPW21 world!! :D Yes they do need slightly less brake tension as the nose holds up much better than the other NPWs.... Good job!