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Old Nov 14, 2009, 12:26 AM
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rockyabq's Avatar
Albuquerque, NM
Joined May 2008
596 Posts
Very nice, Jim.
What's the wing span and chord?
What does it weigh?
Did you use a different color scheme on the bottom so that when you DO fly it inverted it'll be easy to differentiate?
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Old Nov 14, 2009, 04:17 AM
Entropy is happening!
Jim.Thompson's Avatar
Australia, NSW, Bellingen
Joined Aug 2008
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My "Coreflute Wonder" is 1300 mm span and 200 mm chord. E374 airfoil section. AUW is around 850 grams. This makes for a moderately light wing loading: something less than 32 g/sq.Dm. Or in "Ye Olde Worlde Measurement", something like 10 oz/sq. ft.
It is a very suitable aileron trainer for intermediate level and basic aerobatics.

And quick to build. It only takes a few evenings work.

Jim.
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Old Nov 27, 2009, 02:04 AM
Registered User
Singapore
Joined Nov 2004
397 Posts
Bipe SPAD flown by Snoopy :)

Hi fellas,

Just maiden'd my bipe this morning, took off and went straight up! It was tail heavy, got it trimmed out and flew ok after that.

Wingspan is 1 meter top and bottom same. Weight is 2.7 kg. Engine is a very old but still working OS61 4-stroke swinging a 12x6 MK prop. This engine had quite a bit of power, or else i would not have pulled her out of the steep climb during first take-off.

BAsically this is not a totally corro-plastic design, it has a square hollow aluminium main spar running from the engine right to it's tail and the corro is sort of wrapped around it.

Some pics to share...Cheers!
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Old Nov 27, 2009, 02:10 AM
Registered User
Singapore
Joined Nov 2004
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Some more pics...

I will post some internal build pics if anyone would like to have it.
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Old Nov 27, 2009, 10:04 PM
Registered User
Joined Nov 2004
25 Posts
Hi Stevan

That would be great as well as dimensions then I think there will be more of your Snoopy sq. planes in the world Is it cable straps that you use to keep the wings attached?
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Old Nov 27, 2009, 10:29 PM
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Joined Nov 2004
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Hi Steven

It will be great if you can give dimensions and I see you use cable ties if I am correct to attach the wing halves and how did you built your fuselage? The bipe look very nice.

Gert
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Old Nov 28, 2009, 12:06 AM
Entropy is happening!
Jim.Thompson's Avatar
Australia, NSW, Bellingen
Joined Aug 2008
7,315 Posts
Red Baron

Nice plane Steven!

What possiblities there are for coreflute!

Jim.
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Old Nov 29, 2009, 07:21 AM
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Trev63's Avatar
Chinchilla, AUS
Joined Apr 2007
65 Posts
My SPADs

Hi all,

Thoughts I'd share some of my coro scale-like scratch builds.

More photos here

cheers.
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Old Nov 29, 2009, 03:51 PM
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Jim.Thompson's Avatar
Australia, NSW, Bellingen
Joined Aug 2008
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Nice planes Trev! A work of art.
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Old Dec 04, 2009, 05:05 AM
also the stones fly, ..... if…
Joined Oct 2009
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Quote:
Originally Posted by Jimbello View Post
Here is a picture of my coreflute/coroplast slope glider. I cut out all the coreflute with a hot wire including the ribs which are 4 mm coreflute. The spar is carbon tube.
The control surfaces are balsa, otherwise all coreflute.
It flys very well, and is quite aerobatic. I haven't tried inverted yet, due only to lack of experience and skill.

Jim.
Hello dear Jimbello,http://static.rcgroups.com/forums/im...es/biggrin.gif
I try build your SLOPE for begin.
Can you give me the size your model?http://static.rcgroups.com/forums/im...s/rolleyes.gif
1000 Thanks
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Old Dec 04, 2009, 06:14 AM
Entropy is happening!
Jim.Thompson's Avatar
Australia, NSW, Bellingen
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Quote:
Originally Posted by kitemaster64 View Post
Hello dear Jimbello,http://static.rcgroups.com/forums/im...es/biggrin.gif
I try build your SLOPE for begin.
Can you give me the size your model?http://static.rcgroups.com/forums/im...s/rolleyes.gif
1000 Thanks
Ok. I will compile a list of sizes and any details you will need over the weekend and send you a PM.
This plane is now flying very well, I had it out on the slope today. It was flying in light winds that were just strong enough for my little Speedo.
Will fly most basic aerobatics. Now flying inverted nicely. The pilot is still learning (lots).

Just give me a day or two.

Jim.
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Last edited by Jim.Thompson; Dec 04, 2009 at 06:15 AM. Reason: more information.
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Old Dec 09, 2009, 06:21 AM
also the stones fly, ..... if…
Joined Oct 2009
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Quote:
Originally Posted by jimbello View Post
ok. I will compile a list of sizes and any details you will need over the weekend and send you a pm.
This plane is now flying very well, i had it out on the slope today. It was flying in light winds that were just strong enough for my little speedo.
Will fly most basic aerobatics. Now flying inverted nicely. The pilot is still learning (lots).

Just give me a day or two.

Jim.
great!!
Thank!
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Old Dec 15, 2009, 06:46 AM
also the stones fly, ..... if…
Joined Oct 2009
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Quote:
Originally Posted by kitemaster64 View Post
great!!
Thank!
Hello Jimbello,
I free time only during the Christmas holyday for build the your little SPEEDO.
Have you a list of sizes and any details for the costruction?
Super Thank
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Old Dec 15, 2009, 07:09 AM
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Jim.Thompson's Avatar
Australia, NSW, Bellingen
Joined Aug 2008
7,315 Posts
Slope trainer

KiteMaster,

I'll do my best.
Wing span 1300mm. Chord 200mm. Airfoil is E374. I cut the ribs with a hot wire cutter, the profile drawn using Profili2 allowing for the 3 mm coreflute skin thickness. I used a simple cardboard template to cut the ribs, and burned the hole for the spar with a heater steel rod.
The spar is carbon tube, 8 mm in the middle with 6 mm extensions to complete the span. Construction adhesive to glue all together. I cut female profile supports out of scrap blue foam to form a mould for the assembly of the wing, and to retain airfoil shape during gluing with weights on top.
I simply wrapped the coreflute around the leading edge, but have since learned of a better way. Cut the flute on the outside to allow the coreflute to bend around the sharp LE. Then glue on wooden LE and shape. A more faithful airfoil section will be achieved this way. And tougher for the slope.
The fuselage is a simple box section construction with formers etc. I used a symmetrical airfoil shape for the plan view and shaped the elevation view to suit preferred shape. Use the coreflute lines for the decalage. Tail surfaces are recycled 4 mm coreflute and balsa elevator and rudder with tape hinges. Mine has pull/pull rudder, but pushrods are fine of course.

If any more details are required, post here or PM me.

Jim.
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Old Dec 22, 2009, 10:51 PM
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atari7up's Avatar
Medan , Indonesia
Joined Jul 2009
183 Posts
Spadstick.25

Hi guys,
this my 7th spad plane waiting for maiden in this sunday...made it from all 2 mm corroplast,the plans i used is from www.spadtothebone.com where the plane is for .46 size and i resize the plans a little bit for .25

Wingspan : 1000 mm
Fuselage : 730 mm
AUW : 1200 gr
Servo : HXT 5010 x 3 , HXT 9 gr x 2
Fuel tank : 120 cc
Engine : Os . 25 LA
Material : Coroplast 2 mm







































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