Carbon Fiber and wings

[Koenig, Tom]

Ted.. I laminate carbon tow between 1/16 balsa.
I generally get two sheets of 1/16 th and vac bag uni directional ( 180gms) carbon. I cut spars tapering from 10 mm at the root to 5 mm at the tip.
Then I route to cores to a depth of the spar ( 1/8 th) , yes, I lay them flat. Put one top and bottom. I epoxy them in. Then sand to profile and then sheet.

Works extremely well and is light. I have never built a wing over 280 gms, completed,ie: RTF, servos and all

If you need specifics contact me off-line.

Tom

-----Original Message-----
From: discussion-request at nsrca.org
[mailto:discussion-request at nsrca.org]On Behalf Of Ted Sander
Sent: Saturday, 19 March 2005 1:18 AM
To: discussion at nsrca.org
Subject: RE: Carbon Fiber and wings


Oops, sorry about the double post!  The first didn't go through in over 12
hrs, so sent it again.

-----Original Message-----
From: discussion-request at nsrca.org [mailto:discussion-request at nsrca.org] On
Behalf Of Ted Sander
Sent: Wednesday, March 16, 2005 10:15 PM
To: discussion at nsrca.org
Subject: Carbon Fiber and wings

Yes, I'm behind in building - blame it on Gordon Anderson!

But, the burning question of the moment:
Ready to start sheeting my wing cores.  I've got miles of CF tow (loose
"rope").  Do I make a very shallow groove from root to tip, and lay it out
thin and ribbon like?  Or, do I twist it into a round, rod like shape, and
lay it in a deeper groove.  Binder will be Gorilla Glue, just like used on
the rest of the skin.

Or, given that this is a plug in wing, I just skip it, because the wing will
be strong enough anyway?

(Homemade cores, generally following the Focus layout)

Ted Sander

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