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Fore Check
Grand Champion, Kite, & Kitebuilder of the Year 09
Grand Champion, Kite, & Kitebuilder of the Year 09


Joined: 15 Jun 2008
Posts: 3840
Location: The Montessori School of Kites (near Findlay, OH)

PostPosted: Mon May 25, 2009 12:50 am    Post subject: Rainbow Rok Reply with quote

I finally broke down and built my first Rok.

This one is built to the 3-4-5 relationship (almost). I made the sail 58" because my narrowest strip of fabric was 58.5" before trimming. Otherwise it's 72" tall, and is framed with a SkyShark P400 spine and P300 spreaders.

Building the sail took a lot of patience to keep it all square aligned as I pieced the strips together, then the double fold and stretching to complete the Mock French seams I used throughout ( http://www.geocities.com/gengvall/sew/sew.html )

Sure looks nice from both sides, but *whew!*

Then there was the edge binding... Rolling Eyes Not a lot of it, and I've done a ton of it, so piece of cake, right?

Mad

Managing that big ol' sail around my sewing area and trying to edge bind was just goofy.

Anyway...

I'm tired now, but I'll get some detail shots; I think I did purty good. I like what I came up with for the bow line attachment to the 1" Webbing spreader pockets.

TIP: When placing the reinforcement patches for the bridle points, don't put them on the line going right between the corners of the sail that the spreaders land in. Move them down 1/2" so that they're centered on the line going between the center points of your spreader pockets - which aren't centered right on the sail corners. Well, at least mine aren't.

So, after being a littly windy here, mother nature is doing the same. I got out to fly it this evening and the wind is gusty and swirly in that 15 mph ish range.

I was really impressed with this kite and was reminded just how forgiving the Rok is. The other Rok that I have (which I purchased a while ago; I think it's a Premier? It's the Totem Face Rok) wouldn't have fared so well.

Mine flew great. Cool Even if it was dancing like a June Bug in the buffeting and gusty conditions. Here's hoping for more sun and better wind soon; and here's a couple of pics.





I built it with the thought in mind of using it as a "matching" pilot kite for my Lozenge Train - I think it's gonna get plenty of air time on its own. Smile
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Simon

Discovering Something that Doesn't Exist...

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SKITCH



Joined: 08 Jan 2008
Posts: 195
Location: Tulsa, OK

PostPosted: Mon May 25, 2009 3:21 am    Post subject: Reply with quote

Applause Applause Applause Applause

Beautiful Kite.

The hard work and attention to detail definitely show!

Can't wait to see a couple of pics on a very sunny day.

Patrick
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Pearson



Joined: 09 Apr 2009
Posts: 94
Location: Colorado, USA

PostPosted: Mon May 25, 2009 4:01 am    Post subject: Reply with quote

Wow! Simple and elegant. I like it!
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Pumpkin



Joined: 30 Oct 2006
Posts: 7948
Location: Birmingham UK

PostPosted: Mon May 25, 2009 7:58 am    Post subject: Reply with quote

Not bad at all Laughing Laughing Laughing Laughing
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Pete
Where did you say the string goes?
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Fore Check
Grand Champion, Kite, & Kitebuilder of the Year 09
Grand Champion, Kite, & Kitebuilder of the Year 09


Joined: 15 Jun 2008
Posts: 3840
Location: The Montessori School of Kites (near Findlay, OH)

PostPosted: Mon May 25, 2009 1:09 pm    Post subject: Reply with quote

Nuthin' like waking up, having your morning coffee, then walking out the front door with your new kite to fly it at first light. Cool









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Simon

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Radix Lecti Rex
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Fore Check
Grand Champion, Kite, & Kitebuilder of the Year 09
Grand Champion, Kite, & Kitebuilder of the Year 09


Joined: 15 Jun 2008
Posts: 3840
Location: The Montessori School of Kites (near Findlay, OH)

PostPosted: Mon May 25, 2009 1:12 pm    Post subject: Reply with quote

Listening to the world awaken around me, the sun started to rise -



... and I got a few pics with some better lighting. Cool










I was so excited about the idea of going to fly on a peaceful morning that I didn't tighten up the spine, so the pics aren't as perfect as I'd hoped, but a fine way to start the day none-the-less. Very Happy
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Simon

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Grant L
Kite of the Year 2004
Kite of the Year 2004


Joined: 16 Sep 2003
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PostPosted: Mon May 25, 2009 2:17 pm    Post subject: Reply with quote

Great looking kite Cool Very Happy I like the bids in the background on the video
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DarrylW



Joined: 02 Jun 2005
Posts: 1721
Location: Holland, Michigan

PostPosted: Mon May 25, 2009 2:37 pm    Post subject: Reply with quote

Very nice Simon.

Hummmm, sunrise??? It's 10:30 AM and I'm just getting to my first cup of coffee.

Darryl
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Fore Check
Grand Champion, Kite, & Kitebuilder of the Year 09
Grand Champion, Kite, & Kitebuilder of the Year 09


Joined: 15 Jun 2008
Posts: 3840
Location: The Montessori School of Kites (near Findlay, OH)

PostPosted: Mon May 25, 2009 3:17 pm    Post subject: Reply with quote

Thanks guys! I like the sound of the cricket in that video too... Laughing

I said I would ( Rolling Eyes ) so here's some pics of some of the construction details. Nothing earth shattering or ground breaking, but I like what I put together.

Here's the spreader pocket(s) and bow line attachment I used.

The pocket is made from a 3" piece of 1" wide Webbing. the fold is at the 1.75" mark.

Before applying to the sail, a loop of 1/4" wide grosgrain is double sewn to the back of the 1.75" long section of Webbing with a small (1/4"?) aluminum ring threaded in it. Then the Webbing is laid on the sail with the 1.75" line about 1/16" in from the sail edge, a line is sewn there at the "fold", then the Webbing is folded over and sewn down both sides to form the pocket with the grosgrain loop and ring sticking out the end. The bow line is tied to the ring as shown. When the bow line is tensioned, it looks like this:



I like using the rings because it is easy to tie to on the one end, and the string slides through the other nice and easy (I use the flat-style line tensioners)



Viewed "end-on"



---

I think what I did for the spreader/spine lashing is pretty good too. I made a patch out of 3.9 oz dacron that is 1.5" square. I hot cut 2 slits, 1/2" long each, 1/2" apart. I threaded a length of 3/8" grosgrain through the slits and sewed the grosgrain to the patch between the slits. Then the patch is sewn to the sail around the edges, and (not seen) is a seam down the center of the patch under the spine.

Here it is with the spine in place but not lashed to the spreader:



and tied up nice with a simple "shoelace" style bow:


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Simon

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Mrhide



Joined: 22 Aug 2006
Posts: 1570
Location: Montreal, Canada

PostPosted: Mon May 25, 2009 7:01 pm    Post subject: Reply with quote

Quote:
I think what I did for the spreader/spine lashing is pretty good too.



I have to agree ... nicely done. I'll copy that Twisted Evil
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KaiKite
Kite Builder II
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Joined: 04 Feb 2009
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Location: San Juan, Puerto Rico

PostPosted: Mon May 25, 2009 7:22 pm    Post subject: Reply with quote

The kite looks great! Maybe a little less bow in the spreaders would be good though.

To the tensioner construction: I prefer to have the tensioner on the spars to avoid having double impact on the pockets. Doesn't look as elegant but works for me. Obviously, one has to make sure that the construction can not slip which would be one potential disadvantage of that. The line on the sail I do similar.
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Fore Check
Grand Champion, Kite, & Kitebuilder of the Year 09
Grand Champion, Kite, & Kitebuilder of the Year 09


Joined: 15 Jun 2008
Posts: 3840
Location: The Montessori School of Kites (near Findlay, OH)

PostPosted: Mon May 25, 2009 8:30 pm    Post subject: Reply with quote

KaiKite wrote:
The kite looks great! Maybe a little less bow in the spreaders would be good though.


Thanks! I put some "extra" bow in the spreaders simply because the wind was a bit higher/stronger than what I have historically flown my other Rok in. That's the beauty of the adjustable line... Smile

I was actually too conservative on my AOA last night for the first flight in the strong wind; I adjusted it back an inch or two on the tow line ("powering it up") for this morning's flight and it was *much* steadier in the variable breeze. I'll go for less bow next time out for sure.

Kinda re-learning the art of flying and tuning a Rok. Fun. Very Happy
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Lureman



Joined: 25 Mar 2009
Posts: 156
Location: Omro Wisconsin

PostPosted: Tue May 26, 2009 2:47 am    Post subject: Reply with quote

Again A nice piece of art Smile Smile
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Clay
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Grant L
Kite of the Year 2004
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Joined: 16 Sep 2003
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PostPosted: Tue May 26, 2009 3:52 am    Post subject: Reply with quote

Scott Spencer taught a modified ROK at MAKR. He made pockets with the bowline attached similar to how yours is. On his, rather than sew the Webbing stacked, he had us separate the Webbing. He felt that it would center the spar in the pocket and center the bowline on the spar. (note photo is on an angle so the bowline looks offset from the spar.)



He also had the tie down like on yours. He showed us how to go up and over the spreader and under the spine. Each line going the opposite direction, ( assuming the spine is between the spreader spars and the kite sail,) Nice and solid,( yellow on spar are pencil grips to save wear where the spars cross.) Very Happy


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BANSHEE
Kite Builder II
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Joined: 12 Oct 2006
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Location: Wauwatosa, Wisconsin

PostPosted: Tue May 26, 2009 7:00 am    Post subject: Reply with quote

GOOD GOING SIMON, NICE KITE ONCE AGAIN.
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Fore Check
Grand Champion, Kite, & Kitebuilder of the Year 09
Grand Champion, Kite, & Kitebuilder of the Year 09


Joined: 15 Jun 2008
Posts: 3840
Location: The Montessori School of Kites (near Findlay, OH)

PostPosted: Tue May 26, 2009 8:53 am    Post subject: Reply with quote

Wow, cool!

The spreading of the grosgrain to straddle the spar tip is an excellent idea; I've already had to make a slight compensation for not thinking of that. If you go back and look at the 2nd pic in that post showing details (the one with the double white tension line going through the ring on the right) you'll notice *two* rows of red stitching on the the top and bottom edges of the Webbing pocket. That's because after the first flight, I noticed the spreader tip (on this one corner only - weird) was wanting to dive into the corner of the pocket giving the sail an odd look. To keep it centered I just added some stitches to narrow up the room available in the pocket. Worked!

If you look closely at the top left spreader corner in the flight pics, you can see the before-and-after. The first flight from Sunday night that tip/end almost looks like its poking through the sail. I fixed it for the Monday morning flight and you can see all the corners look the same.

SOOOOOOOOOOOOoooooooooo what I'm getting at is that Mr. Spencer had a great idea with the spread line there.
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Pearson



Joined: 09 Apr 2009
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PostPosted: Tue May 26, 2009 9:22 am    Post subject: Reply with quote

Thanks for the closeups guys. These details are going to really help out when I get around to building mine.
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Fore Check
Grand Champion, Kite, & Kitebuilder of the Year 09
Grand Champion, Kite, & Kitebuilder of the Year 09


Joined: 15 Jun 2008
Posts: 3840
Location: The Montessori School of Kites (near Findlay, OH)

PostPosted: Wed May 27, 2009 12:10 am    Post subject: Reply with quote

Well now...

*That* was totally cool. Cool

When I got home from work, there was spotty sun, mostly overcast, and it was very humid. Like a steam in the air.

But the wind was perfect - fairly steady and right at 10 mph. Smile

So I grabbed the Rainbow Rok, set the bow lines to a 7" gap on the top spreader and an 8" gap on the bottom, and went outside to play. Very Happy

I think you can see in these pics that Kai was right about reducing the bow; I'm pretty sure I was like 10" on the top and 11" on the bottom the first couple of times out. Looks much nicer this way, flew like a champ, and was very well behaved.








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Last edited by Fore Check on Wed May 27, 2009 12:48 am; edited 1 time in total
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Fore Check
Grand Champion, Kite, & Kitebuilder of the Year 09
Grand Champion, Kite, & Kitebuilder of the Year 09


Joined: 15 Jun 2008
Posts: 3840
Location: The Montessori School of Kites (near Findlay, OH)

PostPosted: Wed May 27, 2009 12:14 am    Post subject: Reply with quote

After a little while, the sun, getting low on the horizon I was facing (the wind was coming out of due east) peeked out below the clouds and back-lit the kite on a dark-ish background. It just *glowed.* Cool






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Simon

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Fore Check
Grand Champion, Kite, & Kitebuilder of the Year 09
Grand Champion, Kite, & Kitebuilder of the Year 09


Joined: 15 Jun 2008
Posts: 3840
Location: The Montessori School of Kites (near Findlay, OH)

PostPosted: Wed May 27, 2009 12:17 am    Post subject: Reply with quote

A few minutes later and the clouds had gone completely from my perspective of looking at the kite - so sun and blue sky. Very Happy







The only thing was - now I've got a crick in my neck from this thing being stapled to the sky at such a high angle and I'm half blind from the sun shining right in my eyes. Shocked

But that was fun!
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