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Thintana

2094 Views 15 Replies 9 Participants Last post by  cplant
All you guys building new stuff got me thinking and after taking a look at my my Edge P (in my avatar and also a scratch designed/built) I realized that it was starting to look a bit smashed up and shitty again (and it's put a bit of weight on). It's on it's second fuse and has probably 200 hard flights since the rebuild. I must be getting better because I honestly don't know how it survived this long. Time to let it have a break.

So here's the new project. Similar to the OMP Katana but using some of the building techniques found in these threads.

Span - 46"
Length - 46"
Wing area - 720 Sq. in.
Engine - either the TT .46 Pro or the GMS .47 from the Edge
Weight - shooting for as close to 4 lbs as possible

The wing is 9oz ready for covering (except cap stripping). The fuse components are 7.5 as you see them. Fuse is stick built 1/4 x 1/4 with a 1/4 CF rod down the center and 1/16 sheeting. The next one I will get brave and use a slightly larger stock size for framing and lose the sheeting altogether. The fuse is still stiffer than the Edge though and 2 oz lighter at the same stage. I think I'm still on target for a 20 to 22 oz framed up weight. I just need to finish the tail surfaces, ailerons, trailing edge wing fillets and clean up a few small areas of sheeting and it's ready for covering. Hoping to get it finished this weekend and fly it early next week.

Calling it the "Thintana" just to piss off all the non 3D flyers who keep showing up at the field with new Funtana's and blow smoke up everyone elses ass about how awesome they are. Same bunch that frequently use the U word whenever profiles are mentioned :lol:

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A few more.

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Looks good, Colin!

Can't wait to see it all together, it sounds like you have a plan :D
Looks great duuude!!! I think you're right on track!! When you build the next one I don't think you'll have any problem when you loose the sheeting.. Plenty strong...

One other thought... You might wanna put a slightly larger tube in the fuse... At least 3/8" or 7/16"... just my opinion...
That's gonna be one sweet bird. Nice job.

Jeeze, if the Bros keep up all this building we could start our own DIY show on the TLC channel.

How does Swany or Chuck look in flannel? :lol: :shock: :roll:
looking good...."thintana", I like the name
One other thought... You might wanna put a slightly larger tube in the fuse... At least 3/8" or 7/16"... just my opinion...
That was my thought too. Go to 3/8 frame up like my Edge but with a 3/8 CF tube instead of the 1/16 sheeting. I wasn't sure about the stock sizes you guys where using on some of the un-sheeted planes (mojo, burrito, etc.) when I drew this one up so I hesitated about doing it with this one as I was concerned about twisting. I elected instead to lose some wood by going to a smaller framing material but keeping the sheeting (which I realize now is where the weight is).. If Paul say's it'll work I'll do it on the next bird for sure.

Thanks for the comments guys!
Looks good Colin! I agree with Paul, I would suggest going with at least a 3/8" tube (thats what goes in my Boxxers).

Keep us posted on how it goes. Looks like a winner.
Is that a constant thickness wing chord? Nice looking work there.
Constant camber 2 3/4" thickness. Tapered chord with a root of 18" (w/o fillets) and a tip of 13" (both measurments include ailerons). 1" LE taper, 4" TE taper.

The Edge I built has a tapered camber (thinner at the tips). I wanted to try this and see how the wing rock is in comparison, the theory being that that the tips won't stall as easily with a higher percentage airfoil (camber to chord). But who knows. That big thick wing should also give a bit more drag. The Edge has always been a little hard to slow down which can make dropping into a good harrier a bit tricky and it likes to "overshoot" into some manouvers. If you try and wall into a hover it ends up at like 50" before you can blink and you've got to tailslide it backwards all the way down. :D

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I like the covering scheme, and the bunny :)

-barrett
Thought I'd update...got kinda distracted this weekend by something called work (this happens from time to time when you own a business) and didn't get a chance to do any building until tonight. She's just about ready for covering. AUW as you see her is 21 oz. :)

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Looks great cplant...
All ready to go! All up weight is about 4 lbs 4oz. A little heavier than I was hoping but by using lighter landing gear and a micro servo on the throttle it could come down a bit. Even so the wing loading is only 13 1/2 oz/sq ft so it should be a floater. I'm not finished with the color scheme yet but it's getting there. The weather looks pretty good so I'm gonna try and get her up tomorrow morning . I'll try and get some pics too. Can't guarantee how good they'll be (cheap digital camera) but I'll try. :)

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Nice build and great covering... I love that scheme! Hurry and get the flight report lol.

Um, Jeremy -

I would suggest going with at least a 3/8" tube (thats what goes in my Boxxers).
If I didn't know that your "Boxxers" were a plane I'd be laughing even harder :lol:
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