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Twin .020 Jr Skylark build thread

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Twin .020 Jr Skylark build thread

Old 12-21-2008, 07:35 PM
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WEDJ
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Default Twin .020 Jr Skylark build thread

OK, I am going to build a Jr Skylark with twin .020's - R, E, A, no throttle. This should be interesting. I could have put this in any number of forums, but since I will be doing a silk & dope finish, I figured Antique is the proper place.
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Old 12-21-2008, 07:38 PM
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Default RE: Twin .020 Jr Skylark build thread

Signed on! I was wondering when you were going to get to this!

FB
Old 12-21-2008, 07:38 PM
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Default RE: Twin .020 Jr Skylark build thread

First, I will do the body halves. Nice laser cutting from Early Models, the joint fits perfectly. I was concered about the outer part of the joint not sanding smooth if I used a hard glue, so what I did was just wiped the inside of the joint with thick CA. Any gap on the outside will be filled when I sand and dope it. I am not concerned with strength since this joint will be overlaid with another sheet of balsa doubler.
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Old 12-21-2008, 07:40 PM
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Default RE: Twin .020 Jr Skylark build thread

Damn, FB, you're fast. I have another 3 or 4 posts to do today!
Old 12-21-2008, 07:43 PM
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Default RE: Twin .020 Jr Skylark build thread

So next are the forward doubler, tail one, and the wing tripler. All are attached with 20-minute epoxy, spread VERY THIN. No need to add weight, just stick the stuff together. Another plus for Early RC models, the parts line up perfectly. And, the balsa is acceptably light.
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Old 12-21-2008, 07:50 PM
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Default RE: Twin .020 Jr Skylark build thread

So now I can install the upper triangle stock that makes the body rounded. Here I must use Ambroid, because it sands really good, and, well, this is an antique build! Of course, you have to double-glue the joints, which means smearing glue on each surface and letting it dry. This drive the glue into the grain, and makes a stronger joint. Then, when you actually glue it the second time, it softens the first layer, and lets the glue bond deeply into the wood. You know the second layer is thick enough when the glue just about oozes out of the joint.
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Old 12-21-2008, 07:51 PM
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Default RE: Twin .020 Jr Skylark build thread

Yes, that tube of Ambroid is about 20-25 years old!
Old 12-21-2008, 07:53 PM
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Default RE: Twin .020 Jr Skylark build thread

Last post for tonight - The two formers that box the wing are installed, making sure they are 90 degrees to the sides. I will have to now make a mirror image for the other side, then join them, In a day or two, I figure, stay posted!!!
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Old 12-21-2008, 09:20 PM
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Default RE: Twin .020 Jr Skylark build thread

Rock on!!!....I always wanted to see if this was a doable project. TDs or reed .020s? I love the lines of the Skylark.
Old 12-22-2008, 12:03 AM
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Default RE: Twin .020 Jr Skylark build thread

Reed .020s. I think TeeDees would make a rocket!
Old 12-22-2008, 12:48 AM
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maxpower1954
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Default RE: Twin .020 Jr Skylark build thread

That's going to be great! I have the same kit, but I think I'm going electric. I do have the OS .15 powered Skylark 56 twin you saw at Octoberfest - I plan on having them both at the Mid-South VRCS fly-in in May 2009; are you going? Russ Farris
Old 12-22-2008, 07:11 AM
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Default RE: Twin .020 Jr Skylark build thread

Where's the mid-south meet? It's not on the VR/CS site yet.
Old 12-22-2008, 12:33 PM
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Default RE: Twin .020 Jr Skylark build thread

Damn, FB, you're fast. I have another 3 or 4 posts to do today!

_____________________________

Pilot dog FTW!
I was surfing and decided to check the vintage forum and there you were. Had to add my .02 cents. Looks good so far!

FB
Old 12-22-2008, 04:41 PM
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BobHH
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Default RE: Twin .020 Jr Skylark build thread

The midSouth VRCS Fly-in is on Memorial Day weekend here in sunny Holly Springs, NC 5 miles south of Raleigh!! Alway a great time of flying and fellowship.

Bob Harris
Old 12-22-2008, 04:59 PM
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Default RE: Twin .020 Jr Skylark build thread

Bob,
Love to see a video of this bird when you're finished.
Mike MacLean
Old 12-23-2008, 04:44 AM
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Default RE: Twin .020 Jr Skylark build thread

Watching your build thread! I am just beginning to restore one that has been in an attic for about 40 years. Are you going with the original dihedral or removing some?
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Old 12-23-2008, 08:38 AM
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Default RE: Twin .020 Jr Skylark build thread

Wow, a single-channel escapement version. Nice!

I will be reducing the dihedral to about 1 inch, since it will have ailerons.
Old 12-23-2008, 08:46 AM
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Default RE: Twin .020 Jr Skylark build thread

I've got an original Goldberg Kit for one of these.
Now I have to decide single or twin.

Paul
Old 12-23-2008, 09:24 AM
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Default RE: Twin .020 Jr Skylark build thread

I built one of these many years ago. I used the dehidrel as per the plans and two Cox TD .010 motors. The radio was a Cannon two channel block and another servo for ailerons. Flew great even with one engine out. I would love to have a set of plans to build another. I still have the motors in storage. Lost the plane when I let a friend fly it and he crashed into a tall tree. Landing was just fine but getting it down did it in. Enjoy and keep us posted. Would love to have a set of plans if you decide to scan them.
Thanks
Old 12-23-2008, 01:14 PM
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fritzke
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Default RE: Twin .020 Jr Skylark build thread

http://my.pclink.com/~dfritzke/jrskylark.pdf
http://my.pclink.com/~dfritzke/
(Incorrectly noted in FEB. 2009 Flying Models as www.my.pclink.com/%7Edfritzke/)
Dave
Old 12-23-2008, 02:57 PM
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Default RE: Twin .020 Jr Skylark build thread

Here are a couple of pics of mine, finished a couple of months ago.
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Old 12-23-2008, 03:01 PM
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Default RE: Twin .020 Jr Skylark build thread

And the bones.
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Old 12-23-2008, 03:22 PM
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Default RE: Twin .020 Jr Skylark build thread

Very cool. What is it powered with?
Old 12-23-2008, 11:43 PM
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Default RE: Twin .020 Jr Skylark build thread

Very nice, boberos. Sheeting the whole wing out to the third bay is a lot simpler than the curved sheeting shown on published plans.
Old 12-24-2008, 11:38 AM
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Default RE: Twin .020 Jr Skylark build thread

Highplains,

The motors are 400XT from Hobby lobby. I am using 2 ESC's with 1 3S 2200 mah lipo.
Great little outrunners with 7X6 props (8X6 cut down)
Note that the plane was increased by 10% overall. New WS is 42".
Overall weight ready to fly 27 oz.

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