SMALL - Telemetry SMALL - Radio
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Old Jun 30, 2015, 01:01 PM
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Aerotow and sloping Holland
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Quote:
Originally Posted by Dreamcatcher View Post
These parts looks like the wing root's flaps of a F-100 Super Sabre or the ailerons of a F-15, but they also might be parts from a Liner's wing. With so few informations, it's very hard to guess !



+1

You could roast me over an open fire but I wouldn't be able to give you the right answer.
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Old Jun 30, 2015, 03:13 PM
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Wing root flaps - pretty close! Actually they are the inner elevons, but not for the F-100. From what I understand the full size of the aircraft in question uses inner and outer elevons rather than inner elevators and outer ailerons.

Of course the question still remains why I am building elevons using a technique that will probably require a longer build time that an entire conventional correx airframe

Oh, and its not 'just because I can'

Here is a bit more of the puzzle that should give away what plane it is. That plus that 2015 is the last year that you will be able to see one fly:
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Old Jun 30, 2015, 03:32 PM
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SINK HAPPENS !!!!
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Vulcan.............that's my guess.
Andrew
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Old Jul 01, 2015, 12:42 AM
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That's what I'm thinking..
Phil
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Old Jul 01, 2015, 03:12 AM
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Of course it's a Vulcan!

Here are some more pictures of the inner elevon progress. It's turning out better than I expected - no slop, very smooth motion and very scale looking appearance.

But that's not the reason why all the extra work was needed.
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Old Jul 01, 2015, 07:49 AM
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...missing the PE Slope Rebels
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ES....... that rib structure is impressive!
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Old Jul 02, 2015, 01:50 PM
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My guess would be you needed to save that extra 0.0001g to achieve your target weight ! ;-) By using a single servo you shave off quite a few grams and reduce the weight behind th CG.. .. With you its always about the weight...!
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Old Jul 02, 2015, 10:02 PM
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Subscribed to a great tread!
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Old Jul 03, 2015, 02:50 AM
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Quote:
Originally Posted by TrevorJS View Post
My guess would be you needed to save that extra 0.0001g to achieve your target weight ! ;-) By using a single servo you shave off quite a few grams and reduce the weight behind th CG.. .. With you its always about the weight...!
This would be true 9 times out of 10, but not this time...at 30g per elevon, this technique is definitely heavier than just a strip of 3mm correx. Also, since it's an elevon I have to have at least one servo per side, so no saving there (though I plan to connect the inner and outer elevons so that they can run off the same servo, so I guess I do save 2 servos indirectly )

The clue lies in the size of this thing - span is 1.4m and the length is over 1.2m. More pertinent, the spar and central ribs are 100mm deep at their thickest point!

PS: Target weight is under 1400g, which will give a WCL under 3. WeboCalc describes it's expected performance as 'flies like a paper plane', so weight is not a major factor for this build. I'm intending to power it with 2 small Emax motors which give about 700g thrust each, so my only weight concern is not making it too heavy for these motors.
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Last edited by Extreme Sports; Jul 03, 2015 at 02:56 AM.
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Old Jul 04, 2015, 04:30 AM
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Right, decided now that I'm defo going to build the Hog next....any advice on this one guys.
I've been looking at the post that FB did on the forum and it looks straight forward, but one thing that I need to look at in a bit more detail is the wing tips where they fold down.
Cheers guys.

P.S
2 models I've built for my buddies are having they're maidens this weekend. ..fingers crossed

Phil
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Old Jul 04, 2015, 02:10 PM
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...missing the PE Slope Rebels
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Phil. Good luck with those maidens ;-)

...nothing really too complicated about the drop tips on the A-10 wing. Just take two scrap pieces and "deflute" each and practice bending and hot gluing.....
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