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Old May 23, 2013, 01:55 AM
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Ashford. Kent. England
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Big Blue design by Joe Gross

I came across this design and it has no thread.. so here is one ...please post your info and videos here...

basic info

- The material is Protection Board III fanfold insulation.
It's like Bluecor, except has film on only one side.

.
WING:
-The wing is 30 X 18.25 (root) X 14 inches at the tips before rounding.
-Trailing edge of wing is 1.75 inches lower than the leading edge
-Elevon chord is 5 inboard; 3.5 outboard.
Wing struts are bamboo skewers. No spars

FUSELAGE:
-Fuselage is 10 inches tall, not counting canopy and vertical stab,
-Top of vertical to bottom of fuselage is 14 inches.
-Rear horizontal fuselage is 2 inches wide. .
-Horizontal fuselage at the nose is 5 inches wide before rounding.
-The firewall is 4.5 inches in front of the wing at the root

Rudder:
-Rudder chord ranges from 6.25 to 4 inches


Specs
-- CG is 25% MAC.
-Wing loading 2.28 oz/sq ft.
- AUW 7.7 oz. (or 218g).
- The motor is a Turnigy SK2122-1570
-Prop 8x4.3 SF
-Battery 2S 350 Indoors, 2S 460 for Outdoors
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Old May 23, 2013, 01:56 AM
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videos.
.
Big Blue Fun at the MADS Field (6 min 22 sec)
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Old May 23, 2013, 01:58 AM
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indoor flying I love the way this performs
.
Crazy RC Indoor Fun! (3 min 2 sec)
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Last edited by davereap; May 25, 2013 at 02:17 AM.
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Old May 23, 2013, 02:03 AM
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drawings. in pdf format
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Old May 23, 2013, 02:05 AM
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Ashford. Kent. England
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some dimensions for a smaller version at 22.5" span.. to fit my size EPP sheets
and the sketchup drawing at 30" ... the sketchup file is in the zip
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Last edited by davereap; Jun 19, 2013 at 01:39 AM.
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Old May 23, 2013, 02:55 AM
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fOaMmaSh87's Avatar
Australia, WA, York
Joined May 2012
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Wow very cool ive got a 1300kv blue wonder on order might have to make one of these

Ben
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Old May 23, 2013, 04:13 AM
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I have one of those motors would it be a good match for 22.5 span?
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Old May 23, 2013, 04:43 AM
Total Newbie
United Arab Emirates, Dubai
Joined Dec 2012
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Hi guys,just a few questions here

1)Is this a good beginner plane?Looks easy to build and also maybe fly slow(?)
2)I am going to use the A0 plans provided above,so do I just cut the 2 pieces and slide the wing into the fuse and then glue it fixed in place?
3)"The wing is 30 X 18.25 (root) X 14 inches at the tips before rounding." what does the root value and rounding mean?
And finally,the CG is 25% MAC,what does MAC mean?
Sorry, I'm not that good with abbreviation here,so I would greatly appreciate all and any help
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Old May 23, 2013, 05:08 AM
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Azarr's Avatar
Dayton Intl, Ohio, United States
Joined Jan 2000
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Quote:
Originally Posted by jkishan16 View Post
Hi guys,just a few questions here

1)Is this a good beginner plane?Looks easy to build and also maybe fly slow(?)
2)I am going to use the A0 plans provided above,so do I just cut the 2 pieces and slide the wing into the fuse and then glue it fixed in place?
3)"The wing is 30 X 18.25 (root) X 14 inches at the tips before rounding." what does the root value and rounding mean?
And finally,the CG is 25% MAC,what does MAC mean?
Sorry, I'm not that good with abbreviation here,so I would greatly appreciate all and any help
1. Don't know what you mean by beginner? If a first plane, no, if you have some experience and are comfortable with ailerons it might be OK. Simple enough to build and repair.

2. You could do that or split the fuselage in two pieces and then add them to the wing.

3. The root is the (center) section of the wing that meets the fuselage.

4. The MAC is Mean (average) Aerodynamic Chord (width). So it's the point on one wing where if you draw a line, the area on both sides would be identical.

I may have to build one of the little ones, I'm a sucker for Low Aspect Ratio wings. Might be fun with the little 10g motor. Thanks Dave.

Azarr
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Last edited by Azarr; May 23, 2013 at 05:42 AM.
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Old May 23, 2013, 05:34 AM
Total Newbie
United Arab Emirates, Dubai
Joined Dec 2012
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By beginner I meant after amply flying and crashing of the Nutball :P
Have read a lot about it recently in the Nutball thread,that's what brought me here
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Old May 23, 2013, 06:45 AM
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Canada, ON, London
Joined May 2011
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yeah... beginner ... it might be okay; however, it does not have the self-righting characteristics that the nutball has. So I'd suggest starting with the nutball then working up to this. But certainly, this could easily be a second plane. A first if you have help to guide you, but if you're on your own then a second ;-)

Nice Dave, thanks for putting this up. I'll have to check the PDF's, but any details on the motor mount angles? It looks like you build the nose square and the natural angle of the wing through the fuse takes care of the down thrust - ie. if you level the wings on a table the nose of the plane will be angled down slightly. Cool.

Cheers,
J
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Old May 23, 2013, 08:41 AM
Lets break some props :D
joseico90's Avatar
United Kingdom, Liverpool
Joined Jun 2008
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15 incher "Little Blue"

Here goes mine, done at 50% of original size..
Ready for maiden, too windy at the moment.

Now I'm gonna make a full size one too
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Old May 23, 2013, 08:47 AM
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Originally Posted by joseico90 View Post
Here goes mine, done at 50% of original size..
Ready for maiden, too windy at the moment.

Now I'm gonna make a full size one too
Hey Jose... surely you could hover that baby in your shop ;-) LOL

Actually, could be fun to tether the tail to a weight on middle of the floor then slowly throttle up into a tethered hover. Indoor amusement for those who have bad weather ;-)

J
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Old May 23, 2013, 09:11 AM
Lets break some props :D
joseico90's Avatar
United Kingdom, Liverpool
Joined Jun 2008
4,526 Posts
it will hover off my hand with ease, but being Depron it will break if I crash it in here, no way...Jose
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Old May 23, 2013, 09:16 AM
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Originally Posted by joseico90 View Post
..., no way...Jose
ROTFL... that's a great expression for you! LOL

Your nickname from now on should be, "No Way!" Jose ;-)

But I do hear you about Depron... that's why I suggested the tethered tail approach... to launch and catch just throttle up ;-).

J
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