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Practicing rigging
Topic Started: Apr 17 2018, 06:37 AM (92 Views)
DevilFish
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LCDR Paul "Voodoo" Carter
As I have a few biplanes to do, I thought it best I find a rigging technique that works. Here's my first attempt, using an old SMER Se.5a.
This is the "elastic and holes" technique.

Posted Image20180416_223944 by Paul Carter, on Flickr

On the whole ok, but I find the attachment points are a bit messy, not that you can see them in this photo.
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Olde Farte
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Lt. Derek 'Smurfy' Reeve
The ways I've seen is that you paint the topside of the lower wings and the bottom side of the tops before joining them with the braces and attached to the fuselage and each other then rig leaving the ends trapped inside then attach both the upper and lower side of the wings to their pre-installed mates. Of course no good if wings are in one piece.
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DevilFish
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LCDR Paul "Voodoo" Carter
The SE.5a's wings are unfortunately, one piece.

The problem I have is, that I have already applied the decals to the lower half of the lower wing, which makes cleaning up impossible. I'm trying to figure out a way to do this without drilling through them....
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peebeep
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resin fondler
Don't drill all the way through, all you need is a pilot hole deep enough to secure the elastane. If you drill at the same angle as the lie of the cable you have a bit more material to play with. I do all the drilling before assembling or painting anything.
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DevilFish
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LCDR Paul "Voodoo" Carter
peebeep
Apr 17 2018, 10:46 AM
Don't drill all the way through, all you need is a pilot hole deep enough to secure the elastane. If you drill at the same angle as the lie of the cable you have a bit more material to play with. I do all the drilling before assembling or painting anything.
How do I pull it tight then?
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Mark M
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Hawk T1
cut them slightly short, then stretch them into place, secure using ca and excelerator
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Olde Farte
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Lt. Derek 'Smurfy' Reeve
peebeep
Apr 17 2018, 10:46 AM
Don't drill all the way through, all you need is a pilot hole deep enough to secure the elastane. If you drill at the same angle as the lie of the cable you have a bit more material to play with. I do all the drilling before assembling or painting anything.
That would have been my next suggestion. A couple of sites which may help.

http://austinsms.org/article_seaman.php

http://www.clubhyper.com/reference/aligningandriggingabiplanegp_1.htm
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DevilFish
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LCDR Paul "Voodoo" Carter
Mark M
Apr 17 2018, 10:58 AM
cut them slightly short, then stretch them into place, secure using ca and excelerator
:rolf :rolf :rolf :rolf :rolf
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peebeep
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resin fondler
What Mark said. The thread only needs be 2-3mm short, once stretched into place it will be perfectly taut. I've never been able to master taking a picture with one hand whilst stretching the thread with tweezers in the other, but here's before and after shots.

Posted Image

Posted Image
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Olde Farte
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Lt. Derek 'Smurfy' Reeve
Hang something on the end of the rigging, this will keep things in place whilst glue sets and also enable 2 hands for photography, a simple washing peg will do the trick.

I been reading bits and pieces and most if not all agree that on single piece wings drill holes right through, clean up then paint top wing underside and bottom wing topside, fix the struts and attach to fuselage. Once done and set, thread rigging through the pre-drilled holes and secure, once set hard clean up and fill any holes then paint and decal as normal.
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Cimmerian
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Lt. Ken 'Albatros' Jeffrey
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That looks really useful for aligning the wings. That's the main reason my cabinet only has German aircraft in it and the British ones are all stacked in boxes in the cave.
Edited by Cimmerian, Apr 17 2018, 12:31 PM.
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peebeep
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resin fondler
Del, that's a good way to do it if you're using non-stretchy monofilament, but a lot of extra work if you're using elastic thread. The Wallace wings in the picture above were one piece, the thought alone of all that making good by drilling all the way through is enough to make me lose the will to live. As it is, drilling all the pilot holes came close.
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Olde Farte
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Lt. Derek 'Smurfy' Reeve
Not so bad Paul as the CA and hardener would go a long way to concealing the holes. Not my cup of tea as I've never built a bi-plane but if I did it would be a Wingnut Wings kit and I cannot afford them so I'll take a rain check. Oh and not forgetting they have whirly things at the front. :whistle :rolf
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DevilFish
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LCDR Paul "Voodoo" Carter
I have tried the "stretching it between the points" method in the past and it ended disastrously! CA doesn't dry quick enough, or too quick. Things stick to the wrong things, and the "stretch" relaxes....

I'll stick with pulling it through holes. I just have to figure out how to do it the wrong way around, as the top wing decals aren't on yet....
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Olde Farte
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Lt. Derek 'Smurfy' Reeve
You could try thin gauge wire and the holes wouldn't have to be deep.
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