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Old Jul 26, 2012, 12:07 PM
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Daemon's Avatar
Lakewood, Colorado
Joined Aug 2002
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Quote:
Originally Posted by i3dm View Post
i dont like tape either. mainly because it means carrying one more item (tape roll) to the field.
I really can't imagine flying any type of R/C aircraft at any location, without
bringing a roll of tape. Used for so many different things.
BTW, if you're not going to bring tape, you'd better find a better way
to secure the canopy, because the magnets aren't enough.

ian
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Old Jul 26, 2012, 04:50 PM
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Joined Nov 2011
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+1 on the canopy tape.
Mine flew off even with tape on it. Was lucky to get it back.

Has anyone flown the X8 without the winglets?
What would you expect the flight characteristic's to be like?
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Old Jul 26, 2012, 05:35 PM
Never fly an A model anything!
jayb1rdz's Avatar
Antarctica
Joined Apr 2008
4,814 Posts
The stock magnets are not enough for the canopy but I was reluctant to use tape for some inexplicable reason on it. I just sank the magnet holes in the foam a little deeper and doubled up the magnets with additional and thicker magnets. Hold on like a limpet now.

My X-8 did not come with the ply wing tongues so I made some out of lightweight Rocell and CF sandwich. I drilled holes through tongues that align with the under wing holes and use nylon ribbed pegs to secure the wing. However, I have gone back to the simple tape method for the wings and have just left the tongues for additional wing root support. It's faster and less hassle. J
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Old Jul 26, 2012, 06:54 PM
Look out! The lever!
bobthenuke's Avatar
United States, AZ, Peoria
Joined Feb 2005
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Here's a few pics and some comments on my wing...
1) Replaced the magnets for the hatch with stronger ones after reading previous comments.
2) Covered wing top and bottom with vinyl faux carbon fiber cloth.
3) Added plywood tongues for a little added strength.
4) After seeing several different vids of it I decided to let the wing TEs float instead if bending them down and taping.
5) I needed the weight for balance so I decided to test out a receiver I bought for a 14 channel glider.
6) Running the motor on 4S 4500...seems to have plenty of power for this wing
7) Placed cheap Sony video cam in that nose indent. Once I get it trimmed out I'll be adding my Eagle Tree FPV system and Go Pro for recording.
8) Ran a 2" strip of "Clear Bra" material to the bottom and contact areas
9) Utilized the plywood tabs on the wing to hold wings in with the pins in the pic. I'll probably tape it as well for extra security. I'm used to doing this for my large sailplanes so it doesn't bother me a bit.

Saturday will be the maiden flight...I really don't expect any problems but who knows? :-0 Any comments or suggestions will be appreciated. BTW, any suggestions for Elevon throws?

Thanks,

-bob
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Old Jul 26, 2012, 08:12 PM
dougmontgomery's Avatar
Glendale,Az.
Joined Oct 2004
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Great looking wing Bobbo-
Doug
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Old Jul 26, 2012, 08:17 PM
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OzparkPilot's Avatar
Australia, NSW, Sydney
Joined Nov 2006
4,436 Posts
Quote:
Originally Posted by bobthenuke View Post
Here's a few pics and some comments on my wing...
1) Replaced the magnets for the hatch with stronger ones after reading previous comments.
2) Covered wing top and bottom with vinyl faux carbon fiber cloth.
3) Added plywood tongues for a little added strength.
4) After seeing several different vids of it I decided to let the wing TEs float instead if bending them down and taping.
5) I needed the weight for balance so I decided to test out a receiver I bought for a 14 channel glider.
6) Running the motor on 4S 4500...seems to have plenty of power for this wing
7) Placed cheap Sony video cam in that nose indent. Once I get it trimmed out I'll be adding my Eagle Tree FPV system and Go Pro for recording.
8) Ran a 2" strip of "Clear Bra" material to the bottom and contact areas
9) Utilized the plywood tabs on the wing to hold wings in with the pins in the pic. I'll probably tape it as well for extra security. I'm used to doing this for my large sailplanes so it doesn't bother me a bit.

Saturday will be the maiden flight...I really don't expect any problems but who knows? :-0 Any comments or suggestions will be appreciated. BTW, any suggestions for Elevon throws?

Thanks,

-bob

great solution and finish bob ! can you please give a link to the covering as this type looks smoother than most ?
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Old Jul 26, 2012, 09:12 PM
Look out! The lever!
bobthenuke's Avatar
United States, AZ, Peoria
Joined Feb 2005
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G-Forced,

Here's the link to exactly what I have on it...it took 4 rolls (arrrrgh). I suspect that most of these offered on Ebay are the same material.

http://www.ebay.com/itm/190698144660...84.m1497.l2649

-bob
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Old Jul 26, 2012, 09:30 PM
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idletime's Avatar
Canada, ON, Toronto
Joined Apr 2011
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@ bobthenuke

Nice work......what I want to know is where you got the 'clips' that hold the wings on.

Pray tell.
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Old Jul 26, 2012, 09:34 PM
PP/IR
aviatorgeek's Avatar
United States, CO
Joined Jun 2012
113 Posts
I have this have black fiberglass cloth for finishing and strength. Bit on the heavy side (let the critics come out of the woodwork now) but probably similar in weight to that vinyl stuff that isn't going to add much, if any strength.

The lighter cloths used for modeling while they are lightweight, don't add as much strength as a heavier weave. Their glass to resin ratio is higher.

However, that looks great and gives me an idea of how mine will turn out.
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Old Jul 26, 2012, 10:37 PM
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OzparkPilot's Avatar
Australia, NSW, Sydney
Joined Nov 2006
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Quote:
Originally Posted by bobthenuke View Post
G-Forced,

Here's the link to exactly what I have on it...it took 4 rolls (arrrrgh). I suspect that most of these offered on Ebay are the same material.

http://www.ebay.com/itm/190698144660...84.m1497.l2649

-bob
Thanks Bob... Yeah its the same stuff.
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Old Jul 26, 2012, 11:21 PM
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Lakewood, Colorado
Joined Aug 2002
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Quote:
Originally Posted by millst View Post
What would you expect the flight characteristic's to be like?
Bad. And if you ever tip stall (which it would be more prone to do)
it'll enter a spin from which there's no hope of recovery.
The B2 has no winglets, and it takes "duckeron" style spoilers and
fast computers to keep it pointed into the wind consistently.

ian
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Old Jul 26, 2012, 11:38 PM
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Australia, NSW, Sydney
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.........interesting thoughts. When i learnt to fly on EPP wings ( Zagis ) we used to cut our own copies but experiment with different airfoils and wing tips designs... covering materials etc. the BEST wing I had ( The Dirty dingo ) had a single Fin in the middle that replaced the other tips ! Its was ( still got it actually ) a BEAST !! Now you got me thinking what the X8 would be like in that configuration..
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Old Jul 27, 2012, 12:10 AM
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Lakewood, Colorado
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Center fin swept flying wings fly ok (less drag, bit faster, nice yaw tracking), until you hit em
with another combat wing, and then they spin and spin.. We'd always
go after them first in the combat swarm. Obviously a bit of a problem
trying to do that with a pusher prop in the way.

ian
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Last edited by Daemon; Jul 27, 2012 at 12:22 AM.
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Old Jul 27, 2012, 12:15 AM
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I don't think I'll be flying my X8 in a combat swarm.
I may try a center fin replacing the winglets though to see how it goes.
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Old Jul 27, 2012, 12:28 AM
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Lakewood, Colorado
Joined Aug 2002
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My point was that center fin swept flying wings don't have great
stall characteristics. Given that it's already possible to put the X8
in a flat spin, I certainly wouldn't do anything that could make
that more likely, or harder to get out of.

And normally the center fin must extend well back behind the wing
to be effective on a swept back flying wing, which obviously
isn't possible on the X8.

ian
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