FX79 flapping wings!?

Started by KillerDave, May 31, 2016, 01:16:25 PM

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joolski

And there was me thinking it was just me who had the 'flappy wing' version of the fx-79.

Been wondering how to get a bit more rigidity into the wing without adding too much weight.
Currently looking an extending the carbon tubes in the wing extensions so it goes further into fuselage, and as suggest here running some carbon tubes into the wing for added stability.

But the issue I always seem to have, is crosswinds and turning too sharply. As there's very little washout on the wing it tends to stall, and then pitch up.

Glad to see others have had the same issues.

KillerDave

Quote from: joolski on June 21, 2016, 04:34:36 PM
And there was me thinking it was just me who had the 'flappy wing' version of the fx-79.

Been wondering how to get a bit more rigidity into the wing without adding too much weight.
Currently looking an extending the carbon tubes in the wing extensions so it goes further into fuselage, and as suggest here running some carbon tubes into the wing for added stability.

But the issue I always seem to have, is crosswinds and turning too sharply. As there's very little washout on the wing it tends to stall, and then pitch up.

Glad to see others have had the same issues.

Sorry I didn't reply sooner....
Did you get yours sorted?
I fitted additional carbon strips into the outer wing sections.
one fitted into a slot cut 15-20mm behind the LE and another 10-15mm ahead of the elevons.
I do believe the connection between the wings could be much stronger but I am not kind to my plane and have broken it a few times!  >:(

If I could move and store the FX-79 in one piece, I would fix them permanently!

KillerDave

Went out today and set-up my MFD AP!
Still a little to do but in STB mode she flies great! Steady as a rock with quite changeable wind conditions!
Next stop, FPV!  :D

KillerDave

I can now confirm that the mod's I made, do in fact work!
Well over 100kph dive and rock solid!
It flies awesomely!

wayneuk

if you havent crashed it yet may i have a go ?

wayneuk

if you havent crashed it yet may i have a go ?

KillerDave

Hi wayne,

Yes, that is what mine did... I think you controlled that well...
Are you saying you want to fly my FX?

Where are you?