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Post  Kim on Fri Nov 08, 2019 7:10 am

The Goldberg Jr. Skylark continues to draw attention...this time from my carving knife.

Yesterday afternoon, it's nose, fuse corners, and wing leading edges were victims of my deft wielding of a long-blade Exacto.  The thing is really starting to develop a personality. It's wing needs a little more trimming/sanding, and one of it's Tee Dee .020's tack-glued in place for inspiration.

Uncle Wayne's 51 year-old "Scout" control line stunter got some old-school hinge stitching to support it's ancient cloth elevator hinges.  This plane is still in good, flyable shape, with a healthy Cox "Golden Bee" on it's nose.

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Last edited by Kim on Wed Mar 04, 2020 4:27 pm; edited 2 times in total
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Post  dirk gently on Fri Nov 08, 2019 7:39 am

Wow, what a beauty! Timeless, classical construction method. Is it going to be RC? I assume so because of the dihedral. If my assumption is correct, how many channels will it have? Is simultaneous starting of two engines an issue?
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Post  Kim on Fri Nov 08, 2019 8:02 am

dirk gently wrote:Wow, what a beauty! Timeless, classical construction method. Is it going to be RC? I assume so because of the dihedral. If my assumption is correct, how many channels will it have? Is simultaneous starting of two engines an issue?
"

Hey, THANK YOU!!!!

Yes, the Jr. Skylark will fly with a two-channel...elevator and rudder, and powered by two Tee Dee .020's. The Tee Dee's, with the new tank/mounts, will give the plane more power and a longer run. My friend Thomas, flew his with Pee Wee .020's at the 30th S.M.A.L.L. Fly-In a couple months ago (video below), and handled single engine flying with no problem.

Starting two (or more) engines CAN be an issue, but I've gotten a fair amount of experience with them...the key being to run them extensively on a stand before putting them on a plane.



https://www.youtube.com/watch?v=lExfye1Hty0&t=3s
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Post  getback on Fri Nov 08, 2019 8:28 am

Those TDs should carry it well after watching the Pee Wee s fly , very smooth , I use the glue/balsa mix for willing too old school and cheap . Look forward to the finished model Popcorn
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Post  Kim on Fri Nov 08, 2019 1:10 pm

getback wrote:Those TDs should carry it well after watching the Pee Wee s fly , very smooth , I use the glue/balsa mix for willing too old school and cheap . Look forward to the finished model Popcorn

Thanks Eric !!!
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Post  Ken Cook on Fri Nov 08, 2019 4:25 pm

Kim, the twin is cool. I wish I knew how to fly r/c. I built a beautiful model from the 80's that I purchased from Tower Hobbies. The kit was Italian made by Scorpio. My son flew it for the first time last year. I just need to be more persistent in going to the r/c field and just doing it more. They fly real big stuff and I don't know why they don't do smaller like you show. I think the cool factor alone makes it worthwhile. The Scout is a great little plane. My favorite from that series is the 1/2A Tom Tom. Just way cool planes and they do fly quite well. Ken
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Post  getback on Fri Nov 08, 2019 4:42 pm

I still have the Scout Kit that Roger Harris made me some yrs. ago i am ashamed i have not built it Sad
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Post  NEW222 on Fri Nov 08, 2019 11:08 pm

Very nice work Kim. Do you happen to have a guesstimate on final AUW of this little dual castor-slinger? Just curious as I have a JR Skylark that I do plan on flying next year and I believe I am up around 20 ounces without battery yet. Just curious. Thanks.
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Post  MauricioB on Fri Nov 08, 2019 11:09 pm

Hi Kim, here I am having a beer, I just arrived from my job and I am looking at your plane and progress! ... beautiful that model with the Tee Dee .020 !! I mean what color will you do ... congratulations friend!
Another question, I recently had problems with Rx Orange, tell me what RX do you use in your models with .010 / .020 / .049? Thank you Thumbs Up
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Post  Kim on Sat Nov 09, 2019 6:11 am

NEW222 wrote:Very nice work Kim. Do you happen to have a guesstimate on final AUW of this little dual castor-slinger? Just curious as I have a JR Skylark that I do plan on flying next year and I believe I am up around 20 ounces without battery yet. Just curious. Thanks.

Hey, don't really have a clue at this point, but will throw it on the scales once most of it's guts are loaded!
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Post  Kim on Sat Nov 09, 2019 6:32 am

MauricioB wrote:Hi Kim, here I am having a beer, I just arrived from my job and I am looking at your plane and progress! ... beautiful that model with the Tee Dee .020 !! I mean what color will you do ... congratulations friend!
Another question, I recently had problems with Rx Orange, tell me what RX do you use in your models with .010 / .020 / .049? Thank you Thumbs Up

Hey Mauricio!

I intend to duplicate the box-art of the original model (photo below), with some additional wording or trim.  It's wing and stab will be covered with Monokote, while it's fuselage and fin will be painted with Brodak dope.

I've never used the Rx Orange, but have a new Spektrum Rx that I'll probably use in the Skylark.  I still fly on 72 mhz radios in several of my planes, and have collected micro Rx's for use with those.

Have a good day, friend!!!

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Here's Tony, flying my Minnie Mambo "Little Traveler" on 72 Mhz at the 30th S.M.A.L.L. Fly-In:

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Post  getback on Sat Nov 09, 2019 8:52 am

Now that has been brought up i think the 72 MHZ Has more distance than the park fliers , i know when i was flying RC seemed the plane could bee out there a 1/2 mile ,, i have not flown the so called park flyer but says 300-400 ' i think of course in both directions that's a pretty good distance .
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Post  Kim on Wed Jan 22, 2020 3:50 pm

Another afternoon spent working on "piddly stuff" with the Skylark. The servos were dry-fitted (and may get shuffled around) inside the fuse.

The original Skylark was designed NOT to have an elevator, so one was installed. The nacelles are also shaped and finished. Everything got sanded and I'm done with that stuff!

I'm also down to my last precious tube of Ambroid Airplane Cement! The end of an era!

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Post  akjgardner on Wed Jan 22, 2020 5:28 pm

Ooooooohhh iIts a twin....COOL... that looking really good
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Post  ian1954 on Wed Jan 22, 2020 7:30 pm

This is looking good and there seems to be plenty of room in the fuselage to shuffle gear about to balance it.

I am told that Sig-ment is a near equivalent to Ambroid

https://sigmfg.com/products/sig-sig-ment

but the tubes look quite a bit smaller.

The nearest we have in the UK is Humbrol Balsa cement but only in 24ml tubes

https://www.humbrol.com/uk-en/balsa-cement-24ml-tube.html

Smells nice!
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Post  GallopingGhostler on Wed Jan 22, 2020 8:37 pm

[quote="Kim"]Another afternoon spent working on "piddly stuff" with the Skylark. The servos were dry-fitted (and may get shuffled around) inside the fuse.
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The only thing with the so called primitive gear is it was considerably larger than the current stuff. Adams Stomper Magnetic Actuator looks gargantuan compared to those micro servos. Plans (original) I have, shows provision for an optional roughly 1/2 inch wide fairly narrow kick up elevator by splitting the trailing edge, common on R/O compound escapement flying.

Nice build, looks like you have it constructed in decent wood, too.
Regarding the nice smell of cellulose glue, no wonder we were happy builders. Shh drunken
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Post  Cribbs74 on Wed Jan 22, 2020 9:09 pm

Almost there Kim. Looks really good, you are a lucky guy!
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Post  Kim on Wed Jan 22, 2020 11:37 pm

Thanks guys! I'm trying to keep the ball rolling, and want to start hitting this thing with some dope (Brodak on the fuse / Monokote for the wing and stab) before long.

Yeah, I use the term "primitive" fondly, with the knowledge that a little MORE knowledge (and maybe technical ability) would have helped me with my escapement gear back in the day!

The wood does seem to be good stuff. I got the kit from Fast Eddie at:

http://lazer-works.com/main.html

The REAL kick from the glue, for me, comes when I open the door of the shop the next day, and instantly see Uncle Wayne's "airplane room" from when I was a kid.
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Post  getback on Thu Jan 23, 2020 4:52 pm

Plane is looking good , talking about the glue i just had to go get me a smell from the tube i got from WV Bob RSV himself friended me one of his last two tubes and it reminds me of ,, what was it again ,, O yeah the stuff you used to make ur own balloons from a blow pipe lol! from the 60-70s https://www.walmart.com/ip/Toysmith-Plastic-Bubbles-Play-Set/192224982?wmlspartner=wlpa&selectedSellerId=4506&adid=22222222227000000000&wl0=&wl1=g&wl2=c&wl3=42423897272&wl4=pla-51320962143&wl5=9009593&wl6=&wl7=&wl8=&wl9=pla&wl10=113719197&wl11=online&wl12=192224982&veh=sem&gclid=Cj0KCQiApaXxBRDNARIsAGFdaB9mmmZQ6mNQmdAOIMjVyu3W33iIryjqba3qrG40HrWlYks7bQ7BP_kaAmUaEALw_wcB  you can still buy this stuff !! lol! Hijacked Back To Topic
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Post  dckrsn on Thu Jan 23, 2020 6:05 pm

Toluene party at my place!!
Bob No!
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Post  Marleysky on Thu Jan 23, 2020 6:26 pm

dckrsn wrote:Toluene party at my place!!
Bob No!
Oh yrah, drive there, fly back!! tongue
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Post  roddie on Thu Jan 23, 2020 6:37 pm

Kim wrote:
dirk gently wrote:Wow, what a beauty! Timeless, classical construction method. Is it going to be RC? I assume so because of the dihedral. If my assumption is correct, how many channels will it have? Is simultaneous starting of two engines an issue?
"

Hey, THANK YOU!!!!

Yes, the Jr. Skylark will fly with a two-channel...elevator and rudder, and powered by two Tee Dee .020's.  The Tee Dee's, with the new tank/mounts, will give the plane more power and a longer run.  My friend Thomas, flew his with Pee Wee .020's at the 30th S.M.A.L.L. Fly-In a couple months ago (video below), and handled single engine flying with no problem.

Starting two (or more) engines CAN be an issue, but I've gotten a fair amount of experience with them...the key being to run them extensively on a stand before putting them on a plane.



https://www.youtube.com/watch?v=lExfye1Hty0&t=3s

So Much FUN!! Very Happy I want a pet parakeet now! Nice launch Kim! Hope you can round-up the same folks, when it's time to fly yours. Thumbs Up
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Post  Kim on Fri Jan 24, 2020 12:23 pm

[/quote]

Nice launch Kim! Hope you can round-up the same folks, when it's time to fly yours. Thumbs Up  [/quote]

Wish I could take credit for the excellent launch, but that is our own Steve Staples...an original "S.M.A.L.L. Stepper"...who has chucked many-a-model into the blue !!!!
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Post  getback on Fri Jan 24, 2020 4:43 pm

I remember that video , Nice landings and flight !! RC Plane Very Happy
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Post  944_Jim on Fri Jan 24, 2020 6:26 pm

Beautiful twin! Yes... bench-testing is the key to running twins. Learn the idio"sync"rasies on a stand, not the plane (yeah, I had to use a word with synch in it).

I loved Ambroid, and use Sig-ment much the same way just fine...it just doesn't have as much "head-kick" as Ambroid.

The old stuff was called "Super Elastic Bubble Plastic," and I can still hear the ad play in my head. Just another benchmark calling me old.

I'd love to build this plane for CL. Maybe flatten the dihedral, and mount the bellcrank in the fuselage. Keep the wing removable for easier transport. Hmmmm, this sounds like a nice pattern plane. Huh...

I can't wait to see yours fly!
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