Jon Stone wrote:
I am about to apply skins to my Alcyone 3M, and I want to reinforce the
wings with carbon fiber. What's better: carbon tow or carbon mat?
you want tow, not carbon mat. You want all the fibers spanwise
oriented (same direction as the spar)
NO!.. you want to cap the
Jeff,
Depends if the author desires strengthening the spar for launch, or making
the wing torsionally stiff.He didn't say. Either way, I'd avoid the
carbon mat, as it typically soaks up a lot of epoxy.
Actually on the 45 it prevents torsion roll of the wing on launch, but you
won't
The pre-sheeted Alcyone has tow strips about a quarter inch wide that
run out behind the spar -- they're perfectly placed to cut into them
when you cut pockets for servos (rather than relying on the original
cable and torque rod setup). The wing should be strong enough for any
conceivable
You wouldn't put it on the bias on the spar, you would use prepreg on
the spar.
The bias is for the wing.
Jon Stone wrote:
Jeff,
Depends if the author desires strengthening the spar for launch, or
making the wing torsionally stiff.He didn't say. Either way, I'd
avoid the carbon mat,
I am about to apply skins to my Alcyone 3M, and I want to reinforce the
wings with carbon fiber. What's better: carbon tow or carbon mat?
you want tow, not carbon mat. You want all the fibers spanwise oriented
(same direction as the spar)
Will the thickness of the carbon fiber be a
A food saver was used in an article on Ezone. Do a search for Foodsaver or
vacuum bagging and you should find it. gv
-Original Message-
From: Scott and Jennifer Martin [mailto:[EMAIL PROTECTED]
Sent: Friday, May 19, 2006 8:50 PM
To: soaring@airage.com
Subject: [RCSE] Carbon-fiber
CST The Composite Store Has limited quantities of unidirectional Carbon
Cloth and Tow in stock. 3.0 0z Tacky Thread unicarbon and 7.4 0z uni-webed
carbon. And some carbon tow. We also have 1k carbon cloth available. The
web site is www.cstsales.com or you can call 800-338-1278 between 7:30
Try: http://www.cstsales.com/DanVeronica Merryfield [EMAIL PROTECTED] wrote: I need to get some CF cloth and tow. Here in Canada (Western BC), all the stockest are telling me that both the Canadian and US departments of defence are buying up everything hence they have no stock.
Veronica,
Yep, it's true. Carb.com is telling me they won't have any in stock
until September at the earliest. Wick's Aircraft Supply or Aircraft
Spruce may also be a good source if they still have any.
Happy flying,
Jimmy
www.jtmodels.com
At 04:53 PM 4/11/2006, you wrote:
I need to get
Title: Airtronics Digitals available
You
might try Coast Fibre-Tec on Boundary Road in Burnaby (604-294-8116). They
normally carry uni-carbon (various widths) and have had some 5-6 oz cloth in the
past.
Phil
in Vancouver
-Original Message-From: Veronica Merryfield
The easiest type of carbon to use is the Unidirectional Carbon Laminate
strips the same width as the wooden spars in the wing. Typically they
are only needed in the center part of the wing. Just glue them on the
top and bottom (outer surfaces) of the wooden spars. I recommend thick
flexible type
You might look into the premade material. from either of your sources. I
have some .007 material that is 1/4 wide and plan to bond this with WEST
systems to the spar caps. It is avail in many widths and several
thicknesses, even tapered I believe.
.bcAG4YQ Williamsburg, VA
On
There's another carbon product you might consider - Jim Marske* sells
Graphlite, a very high modulus carbon (rod, rectangle). I had a scale
builder recommend it, and it's pretty great. I bought a roll of it
(like working with spring steel), and I've been using it for a couple
years now.
Cuts
Calculator. Standard disclaimers apply.
- Original Message -
From: Harley Michaelis [EMAIL PROTECTED]
To: [EMAIL PROTECTED]; RCSE soaring@airage.com
Sent: Monday, January 24, 2005 12:20 AM
Subject: Re: [RCSE] Carbon fiber reinforced spars
Wes. . .it will be easiest to work with the rigid, pre
A word of warning Douglas.
Carbon fiber dust is a very bad substance to get into your lungs. When you
cut it with a dremel you should, at a minimum, be wearing a filter that
prevents the dust from entering your lungs. At best, you should be doing it
in an environment that doesn't leave the dust
Here's a good article Jim put out
http://www.continuo.com/marske/ARTICLES/Carbon%20rods/carbon.htm
- short answer to the size question is (.092 x .220)
Good luck,
Brent
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Title: Re: [RCSE] Carbon fiber reinforced
spars
Hi Wes,
I am in the process of building a Majestic. Mark Drela has
provided a series of suggested modifications for the Majestic, one of
which is to add carbon fiber to the spars. For this 110-in.-span
plane, he recommends tapered carbon fiber
Look in R/C Groups/Sailplanes/Thermal and find the
original Houston Hawk thread. In the first 100 replys
there is a good system shown for spars of the Houston
Hawk. It's a 126 RES ship and the winf has so far
proven winch proof. I used .060 top and .030 bottom
caps with no spruce. I wrapped only
Wes. . .it will be easiest to work with the rigid, pre-made laminated spars.
They come in several lengths, widths and thicknesses. If this is a 2M RES
the .014 thickness should be fine. If somewhat larger, a bit thicker would
be better. You do want these to be flush with the top and bottom of
CST The Composite Store has long carbon rods available. They are .050 and
.070 diameters in 72 lengths. Call the order desk for more information.
800-338-1278
-Original Message-
From: mike remus [mailto:[EMAIL PROTECTED]]
Sent: Thursday, June 13, 2002 5:38 PM
To: [EMAIL PROTECTED]
If your Sharon has fuse made of the FG do not use carbon as push rods to the
tail. carbon do not change the length with temperature as much as glass
does. You are looking for trouble
Mike
- Original Message -
From: mike remus [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Thursday, June
I have carbon push rods in my ICON, Cobra and SchpotDorker and haven't ever
had any trouble...
Jim
At 10:42 PM 6/14/2002, Zbigniew Michalczyk wrote:
If your Sharon has fuse made of the FG do not use carbon as push rods to the
tail. carbon do not change the length with temperature as much as
Duane Asami wrote:
Aloha Everyone,
W long while ago, I bought a pair of very thin, solid carbon pushrods. Now
I can't seem to recall where I got them from. Any ideas? I know Sullivan
makes carbon rods but I believe their the hollow ones that you screw a short
piece of 2-56 threaded
Paul Breed wrote:
For a non soaring project I need to know:
The coefficient of thermal expansion for carbon fiber,
and the coefficient of thermal expansion for typical
carbon fiber epoxy composite assemblies.
Like many fibers made out of linear, aligned polymers,
carbon fibers have a
[EMAIL PROTECTED] wrote:
By no means am I an authority, but I did just read an interesting article in
the December issue of Scientific American about Nanotubes. These are long
macromolecules of pure carbon that are interesting both for their resilience
and electrical properties. It also
In a message dated 12/25/2000 6:54:20 PM Central Standard Time,
[EMAIL PROTECTED] writes:
When we can get nanotubes, we will have the ultimate
reinforcing fiber. Really good graphite fiber has a modulus
(stiffness) of about 400 Mega Pascals with an elastic strain
to failure (stretch) of
[EMAIL PROTECTED] wrote:
In a message dated 12/25/2000 6:54:20 PM Central Standard Time,
[EMAIL PROTECTED] writes:
When we can get nanotubes, we will have the ultimate
reinforcing fiber. Really good graphite fiber has a modulus
(stiffness) of about 400 Mega Pascals with an
Heh...and besides, if it's too expensive to build the whole plane out of
the stuff, at least maybe we could have nanotube spars! Anyone up for
500mph DS?
At 10:14 PM 12/25/00 -0800, Bill Johns wrote:
[EMAIL PROTECTED] wrote:
In a message dated 12/25/2000 6:54:20 PM Central Standard Time,
Beltran,
Try www.intothewind.com they are located in Boulder, CO.
Jerry Miller
SOSS-Medford, OR
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"unsubscribe" requests to [EMAIL PROTECTED]
Use a small piece of shrink tubing and some CA
T
[EMAIL PROTECTED] wrote:
I just bought carbon fiber pushrods for my hlg. What is a good way to
attach them to the control horns? I thought about gluing a bit of a
metal pushrod to the end, but how would you attach the metal to the
carbon?
[EMAIL PROTECTED] wrote:
I just bought carbon fiber pushrods for my hlg. What is a good way to
attach them to the control horns?
Tack them on with CA, then wrap tightly with button thread and add
another drop of CA.
Dave Johnson
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