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Old Nov 28, 2006, 09:31 AM
Detail Freak
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Harbor City, CA
Joined Oct 2003
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R-

I have a pre-made fuse already, but you can count on me for the rest of the items above. I don't mind posting pics as long as it will help someone else with their builds.

T
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Old Nov 28, 2006, 10:52 AM
.: Looking for Thermals :.
Ricardo RW's Avatar
Chile, Quinta Región de Valparaíso, Los Andes
Joined Jun 2002
864 Posts
Thank very much target.

I'm kinda losing virginity with composites. In my country, a bunch of guys and me are building 60" racers, and for myself, I built a gravity foam cutter, cut my first foam wing, covered with balsa (2mm (0.08") as I had them in my workbench) some Carbon Fiber Tow for spars. I'm just to cut the ailerons, make the servo pockets, dig for the wire channels, and building the fuse. For the fuse i bought a small fishing pole that will act as a boom and for the pod I glue four pieces of 10mm (0.395"), carved the inner pieces to install avionic, and next, carve the whole thing like a water drop.

Your input will be very useful for me and my friends, so please keep going. I like to learn fast watching the mistakes of others (the experience...) in order to make less mistakes myself.

For example, the foam cutting process had that approach and my first wing (the one I'm building now) wasn't so hard to make it.

My next step is to build a vacuum bagger with an old fridge pump.

So please keep going.

Take care.
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Old Nov 28, 2006, 12:36 PM
Detail Freak
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Harbor City, CA
Joined Oct 2003
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If you look in the "Build Tips" section at

www.kamodels.com

There is a section on sheeting the wings, cutting the ailerons, etc. that may be helpful in the mean time.

T
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Old Jan 04, 2007, 08:15 PM
Detail Freak
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Harbor City, CA
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I cant wait to get back to work on the Jart!
As soon as the Destiny's done!

T
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Old Jan 05, 2007, 10:27 AM
.: Looking for Thermals :.
Ricardo RW's Avatar
Chile, Quinta Región de Valparaíso, Los Andes
Joined Jun 2002
864 Posts
Thank you again. I browse the page you recommended, there were some good tips.

Take care.
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Old Feb 18, 2007, 03:46 PM
Detail Freak
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Harbor City, CA
Joined Oct 2003
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Jart update-

I took the stab out of the bag after yesterday's F3F race...

It came out quite well, I think, and I'm happy with it. I used a somewhat heavy glass layup on it, with a Kevlar LE.

The layup was like this:

1-1/4" wide bias ply 1.4oz Kevlar, 3M77'd down to the LE,
3/4" wide bias ply 4 oz S-glass strip 3M77'd over that.
2 plys 4 oz S-glass, 0-90 orientation (I'm lazy)
1 ply 1 oz glass, 0-90 also

The finished, but uncut and unhinged part weighs 50 grams, and is quite stiff and solid. I think it will work fine. I may add an aluminum tube to the LE of the elevator.

Here's the pics- The LE came out good, so I'm happy.
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Old Feb 18, 2007, 05:03 PM
find me @samotage
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Melbourne Australia
Joined Jul 2005
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Nice work Mr T!

I just stumbled across this after you post to the Jart build index

I was wondering about the balsa cap you have on the root of your wing, and how that was going to work, now I see there is ply underneath - a very cool idea. Are you going to sand the balsa away as much as possible in the area that the wing mates with the fuz around the joiner bar?

Sam.
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Old Feb 18, 2007, 05:19 PM
Detail Freak
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Harbor City, CA
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Yes, that is the plan-o-tage, Samotage!
I'll sand away all of the balsa, and lightly into the ply on the short end of the root (forward), and hopefully, sand nothing off the area where the wing tube is. Then the only part left that will be balsa should be the back 1/2-1/3 chord...
I guess using thicker ply to begin with would have been a better plan, but I just don't want the root rib that's in there to be weakened.
The balsa cap was an after-thought after looking at your thread, and I realize that is why you added to the fuse. Since I want to use two sets of differing airfoil wings, a fuse cheek wouldn't have matched up on at least one of them.


EDIT- Maybe I'll hollow out the balsa in the back of the root skin, and fill with epoxy/fibers!
T
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Old Feb 18, 2007, 05:29 PM
find me @samotage
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Melbourne Australia
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Mmm, that's an idea! Though if you brushed hot thin poxy onto the balsa, I am sure it would impregnate it, making for a nice sturdy root.

Sam,
who cut 3 complete sets of J cores on the weekend.
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Old Feb 18, 2007, 05:49 PM
Detail Freak
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Harbor City, CA
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Maybe I'll just relieve it a little, and fill the rest....

T
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Old Mar 03, 2007, 12:41 PM
Registered User
San Pedro
Joined Jan 2004
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T, you should make a mold of that Lucky. If you're interested let me know. Mine ripped until the aileron ripped off on a balistic day. They are hard to get, yo have to buy the whole plane.
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Old Mar 03, 2007, 01:17 PM
Detail Freak
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Harbor City, CA
Joined Oct 2003
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Quote:
Originally Posted by dman1
T, you should make a mold of that Lucky. If you're interested let me know. Mine ripped until the aileron ripped off on a balistic day. They are hard to get, yo have to buy the whole plane.

I'm not too into that; since they are still in production. If you like it that much, you should just make your own similar plug, and make your own mold...

T
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Old Mar 04, 2007, 11:04 AM
Detail Freak
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Harbor City, CA
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Here's the latest on the Jart progress- I have been working a lot; I was offshore 12 of the last 14 days... I need to figure out a way to build on the boat! Being employed is really slowing me down.

Here's som pics:
I have cut the elevator free from the stab, then sanded the faces of both a little to help true them up a bit.
Then a strip of 4oz cloth goes on each face with West epoxy. I mad a little stand from stryofoam.
The strips should have technically had the glass fibers oriented 45/45, not 0/90, but I'm into the "Git er dun" mode, on things that aren't too critical. I didn't feel like wasting a bunch of glass, to cut some on a bias....

Now I'll need to trim the glass on the edges, and make the silicone hinge.

T
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Last edited by target; Mar 04, 2007 at 11:12 AM.
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Old May 03, 2007, 06:10 PM
GOT WIND?
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Escondido
Joined Jul 2006
1,206 Posts
Quote:
Originally Posted by target
Help motivate me, someone!

Target
Hey Target that fuse sure looks like a rotors, is it?
-Jason
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