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SilentPilot

Wing retaining

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SilentPilot

Hello good people! It's not often I'll frequent a build thread, I don't usually get time to build or repair anything. The list of planes awaiting repair has grown too long now, so seeing as I'm furloughed I now have a small window of time for repairs each day.

So, if I may, I'd like to tap into the collective knowledge here.

I'm scratching my head a bit on how to retain a wing on a model that doesnt have any dowels for rubber bands. 

At the risk of sounding like the flight deck crew from Airplane the Movie my method is:

Over, under, over, done

and 

Under, over, under, done

Roger!

 

Do you get what I mean? Over one wing, under the fuselage then over the other wing and vise versa.

Is that ever done? 

 

Tony 

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satinet

Are we talking about a wing that sits on the fuselage or a two piece that butts to it?

 

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wookman

A picture is worth many words. I am sure such a thing would have you drowning in a deluge of sage advice. 

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satinet

Sounds like its meant to be bolted down.

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Andy_B

goop is the way to go ......🙂

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SilentPilot

I'll get a pic later,

It is a 2m Algebra. R/E only so no connections to the wings. They are mid mounted with about 25⁰ dihedral. 

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SilentPilot

This is it:

20200521_192632.thumb.jpg.f4e458e4ff8fe1137354c87268605bc4.jpg

My first idea. As you can see it doesn't really work! 

20200521_192418.thumb.jpg.691e3b0e22b6ee9811f4916a701a2d32.jpg

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satinet

Erm what will the bands do...?

Looks like there is enough on the fuse for tape..... Indeed there appears to be bands of tape to stop the covering getting pulled off.

If not rare earth magnets or multiplex wing locks are an option.

 

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Marc RC pilot
Posted (edited)

I wouldnt trust that SP.

Looks perfect setup for an hook/eyelet  screw on the root cord with a little slot in fuzz to accommodate it?

 

Cool sticker! :) 

Edited by Marc RC pilot
sticker
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SilentPilot

Thanks all, hooks going in it is 

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grj
13 hours ago, Marc RC pilot said:

Cool sticker! :) 

Mark, artwork that is available to BARCS members on the home page.

G

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Gary B

From the protective tape around the wing root it looks like they have just been taped.

I used Multiplex locks on my Hi- Phase, they click together and are pulled apart with a wedge, they come in different locking strengths (the diameter of the pin or hole varies).

Some here , other model shops are available.

This is the arrangement on my Multi-Phase, far right are two cup hooks, it is easy to band them together but with a fuselage like the Algebra you have to put the band on one wing and pull it through with a wire hook tool. There is a variation on this where the hooks attach to small plastic 'top hats' that locate in a keyhole shaped slot in the wing roots, Graupner system I think.

Will try to find photos of the uni-lock.

1757071046_PictureorVideo193.thumb.JPG.02919cd7ed6fe2da24912226bd012d86.JPG

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Gary B

Found the Uni-lock photos:

This is the female part, epoxied in to the fuselage, needs at least a 1/8" ply or similar structure behind it. The white Saturn shaped object on the left is the original hook and rubber band attachment hole, filled

627206958_PictureorVideo209.thumb.JPG.4ebae2d7a2041e270f3a91e3f4ae4fcb.JPG

This is the male part fixed in to the root rib.

.113116537_PictureorVideo214.thumb.JPG.a1d0149c18d70744fd3c2409273010f0.JPG

 

 

 

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Gary B

This is the Veron Vortex system:

2076786923_Picture045.thumb.jpg.fcdaf9fa4c495aae2371c16e99316d3f.jpg

1300049117_Picture110.thumb.jpg.a44bcc21e9278c2ed0ae0040b808bdb7.jpg

 

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wookman
15 hours ago, SilentPilot said:

I'll get a pic later,

It is a 2m Algebra. R/E only so no connections to the wings. They are mid mounted with about 25⁰ dihedral. 

25 degrees of dihedral seems excessive. I would have expected some really odd handling. Lots of Dutch rolling perhaps. I would think half of that would be too much. 

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SilentPilot

Thanks!

I have used the wire with a hook on the end method to join my 4m wing because there is no access to the inner bit of the fuselage.
This one however has the inner bit accessible under the canopy so i might put the joining band(s) together connected loosely then stretched to an anchor point forward fuselage to take up the tension.

I’ll use tape too but that will be more for aerodynamic reasons.

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SilentPilot
1 minute ago, wookman said:

25 degrees of dihedral seems excessive. I would have expected some really odd handling. Lots of Dutch rolling perhaps. I would think half of that would be too much. 

Doesn’t a R/E model turn by using a controlled Dutch Roll?

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SilentPilot

I could measure the true angle. All I'm working from is it doesn’t quite go to 1 o’clock when stood upright!

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wookman

RE planes do turn by using the yaw roll couple generated by dihedral. My comment was that 25 degrees was a lot (too much). 

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SilentPilot
1 hour ago, Gary B said:

 

1757071046_PictureorVideo193.thumb.JPG.02919cd7ed6fe2da24912226bd012d86.JPG

I’ve got to ask...

What is that servo with the Y string connected?
At first I thought it was a pull-pull rudder but it doesn’t seem to go anywhere and the servo arm looks wrong!

Then I thought it was a canopy release, or wing release!

Then I started going crazy :D

 

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