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Old Feb 09, 2016, 08:17 AM
bigphil1967 is offline
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UK, Torfaen, Cwmbran
Joined Jun 2009
124 Posts
Thank you Pascal ��
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Old Feb 09, 2016, 11:53 AM
cole colett is offline
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Cole Collett
South Africa, EC, Port Elizabeth
Joined Feb 2013
23 Posts
L fitty nine

fist proper vinyl job
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Old Feb 09, 2016, 01:09 PM
harry up is offline
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United Kingdom, England, Derbys
Joined Aug 2015
35 Posts
Hi Phil, Just catching up on your wing issue posts. Not sure if this helps but - if your correx is similar to the stuff I bought at UK Wickes ( ie black in colour and described as antinox flooring), then I dont think it behaves quite as plastically as correx - it behaves a bit more like plasticated cardboard and doesnt seem to fold & flex etc as smoothly - tending to crease. May be a factor? Possibly some clear/transluscent material may work better...?

Cole - nice job on the L39 ...covering can take a while but is worth it.....good tree landing!!
Regards H
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Old Feb 10, 2016, 01:36 AM
Slopey is offline
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Inverted has Right of Way
Joined Oct 2013
9 Posts
correx wing issues

Hi Phil

Been building with correx for a while now, and have experimented with different flute orientations. I fly a lightweight MiG 3 with wings with lengthwise flutes and no spar. It has ribs made from sandwiched bits of 3mm correx - flutes orientated perpendicularly. (easy to make with a desktop laser) the keys are (1to put in 1/2 ribs on the leading edge, spaced close enough to avoid the dips in the leading edge, and (2 to make the wing sufficiently 'monocoque' to maintain strength - especially strong joints at root, tip and along trailing edges, so that the lengthwise flute skin takes the stresses.

I find that this method produces strong and lightweight wings with very controllable profiles, and which have a stall softening rounded leading edge. They can be adapted to very small slope soarers. I built also a very successful correx Le Fish using this type of set-up, but with a thin spar.

I have, however, recently built the Correx Impala and constructed the wings in the conventional, chordwise flute orientation. I was dismayed by the sharp and wavy leading edge, and remedied this by making a few more leading edge creases and gluing in a 4mm diam. dowel. This has produced a very sweet flyer with an almost symetrical wing profile that inverts with almost no forward stick.

I agree that you may have got a bad piece of correx, but I also wonder if you glued with hot melt(glue gun) and that partially hard glue may have not caused the kink...
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Old Feb 10, 2016, 02:49 AM
Sean Oelofse is offline
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.....till the wind drops.
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Port Elizabeth, South Africa
Joined Oct 2006
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Quote:
Originally Posted by cole colett View Post
fist proper vinyl job
Sheeeeesh Cole!!!!
Very very smart!!.......says VG!!
I'll pop a canopy for you tonight!!
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Old Feb 10, 2016, 07:17 AM
Slopey is offline
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Inverted has Right of Way
Joined Oct 2013
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Correx Impala Flying

Hi Phil. A quick and dirty video of the Impala on the slope.

https://www.youtube.com/watch?v=a8qhi9GtYSM
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Old Feb 10, 2016, 07:57 AM
ChuckGlider is offline
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Silent but deadly!
United Kingdom, Bettws
Joined Jul 2015
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Hey Christian, that flies really well

Where were you flying from?
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Old Feb 10, 2016, 12:07 PM
Dreamcatcher is online now
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Warbirds Lover
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South of France
Joined Jan 2008
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Quote:
Originally Posted by Slopey View Post
Hi Phil

Been building with correx for a while now, and have experimented with different flute orientations. I fly a lightweight MiG 3 with wings with lengthwise flutes and no spar. It has ribs made from sandwiched bits of 3mm correx - flutes orientated perpendicularly. (easy to make with a desktop laser) the keys are (1to put in 1/2 ribs on the leading edge, spaced close enough to avoid the dips in the leading edge, and (2 to make the wing sufficiently 'monocoque' to maintain strength - especially strong joints at root, tip and along trailing edges, so that the lengthwise flute skin takes the stresses.

I find that this method produces strong and lightweight wings with very controllable profiles, and which have a stall softening rounded leading edge. They can be adapted to very small slope soarers. I built also a very successful correx Le Fish using this type of set-up, but with a thin spar.

I have, however, recently built the Correx Impala and constructed the wings in the conventional, chordwise flute orientation. I was dismayed by the sharp and wavy leading edge, and remedied this by making a few more leading edge creases and gluing in a 4mm diam. dowel. This has produced a very sweet flyer with an almost symetrical wing profile that inverts with almost no forward stick.
Hi !

Very interesting subject imho.
Is there some pictures taken during your wing build available somewhere, please ?

Thanks
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Old Feb 11, 2016, 03:17 AM
bigphil1967 is offline
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UK, Torfaen, Cwmbran
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Starting to resemble a 109....from 50 paces
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Old Feb 11, 2016, 03:31 AM
Claudio Damin is offline
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South Africa, EC, Port Elizabeth
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Quote:
Originally Posted by cole colett View Post
fist proper vinyl job
Nicely done Cole !!!
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Old Feb 11, 2016, 03:54 AM
Dukejet is offline
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Careful,.. confident,.. CRASH!
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Australia, QLD, Biloela
Joined Aug 2012
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Very good so far Phil! Keep going mate, you got-ya
I got the plotter working ! Printed the Polaris and F-86.
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Old Feb 15, 2016, 10:25 PM
Sean Oelofse is offline
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.....till the wind drops.
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Port Elizabeth, South Africa
Joined Oct 2006
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Awesome build Craig!!!
Thanx for sharing!
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Old Feb 16, 2016, 02:51 AM
Dukejet is offline
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Careful,.. confident,.. CRASH!
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Australia, QLD, Biloela
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+1 thanks! Awesome job.
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Old Feb 16, 2016, 03:18 AM
EeleyEagle is offline
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SINK HAPPENS !!!!
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Coffs Harbour NSW Australia
Joined May 2006
565 Posts
Thanks Craig,
Well done. Yes I can upload your photos from here for future reference. Thanks for your efforts in trying to email them to me. Maybe the file was too large, either way, you have now succeeded for us which I'm sure is appreciated by many others.
Andrew
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