Foamy S-3b Viking - by FoamyDM Lockheed

[PsyBorg]

Might wanna dig thru @willsonman threads. He designed a simple and effective 3d printed bomb release which would save you a snot load of weight vs a complicated release.

Nice progress too cant wait for the maiden. Are you planning a scale landing area with a 4 wire system to practice tail hook carrier landings at some point?

 

[willsonman]

https://www.thingiverse.com/thing:2811104

 

[FoamyDM]

https://www.thingiverse.com/thing:2811104

3d printer is not printing correctly. It's printing Oblong. But this may be incentive enough to take a few minutes tomorrow to work on the Issues I know about.

 

[FoamyDM]

Might wanna dig thru @willsonman Nice progress too cant wait for the maiden. Are you planning a scale landing area with a 4 wire system to practice tail hook carrier landings at some point?

Thanks, I am VERY please with it so far. Made some good progress, tonight. The horizontal and vertical stabs are looking great! and have come together well. Next stop - Electronics
Details
The big items on this we're pylons for removable nacelles. Allowing a switch out for larger EDF motors if desired.



Next step was the H and V stabs.
I tapered them with and iron, removed 1/2" of paper along the front, and cut grooves thought the inner paper widened with a fingernail, at both taper edges then I tapered the control surfaces. On the vert stab, I tapered the control surf. And rounded over the front edge. The vertical wooden stirrers got through the three layers of foam. A place to strengthen is to add an offset anchor layer, located At the end of the sticks. The V stab is set with a 3° dihedral. I need to make a gauge.

Now that it's put together (mostly), I can focus on electronics, and gear. This will be fun! Remember this still just sliding over the core

 

[Grifflyer]

She's looking very beautiful!!

 

[FoamyDM]

Thank you @ Grifflyer, I hope she flies as well as this is coming together

 

[FoamyDM]

Today I've spent WAY to much time looking through GEAR. This plane required home made retracts.

I'm looking at the Gear, I went to the hobby store to grab some wheels and other supplies. I went with 3/16" aluminum tubing to fut over the 1/8" wire and act as a Sleeve/stop for the Springs.
I though this would go Quick, but the 2" rear wheels don't slide in easily like I hoped, so I need to come up with something else.I was thinking attach them to the bending piece, but that is harder to knuckle, than a straight stick. Eithrt Way, it's time to get it done.

For Nose Gear, I want to do something like this:

https://www.rcgroups.com/forums/showthread.php?1739206-Steerable-1-3g-micro-retractable-landing-gear

 

[FoamyDM]

I have spent time mocking up and testing some of the retractable steerable nose wheel setups. I have found one I like and it's time to Manufacture it. I have some plastic sheet I plan to use for this.

Last night I mounted the rear main gear struts and they don't fit right with the wheels. Close. So I may exchange the rear wall for 3/32" FB. It might make the difference. I have decided to try plastic for Fast food soda drink cups for the doors. I have some door stay mechanisms to setup. Finally a use for those extra servo arms!

With all this I've been setting in the Servos attempting to keep them as hidden as possible. I used 1 servo for flaps. To create a tight guide, I rolled paper and pushed it throught the punch holes. These helped guide the pushrods (landscape wires) through.


Gear and wing mount next!

 

[FoamyDM]

Right, I nearly forgot to include the updates on the Rocketry preperations, and attempts.
Fuel Testing:

Ignitor Test - idea 1:

There is more to come. I have 1 Pen Rocket fueled up, but I'm doubtful. Right now I need a Fuse to light it. Right now, I've just succeeded in melting the end of the pen, not launch it. Either Way, This is Promising. as it's the 4th, I may just pick up some commercial things to try ideas with.

 

[FoamyDM]

Tonight I spend some quality time with project.

The other day I installed the rear landing gear. Next step for these is the bracing. It is critical these don't buckle on a landing.

I have built the retractable nose gear mechanism.

testing out and I made a little bit work before final but it functions just like i hoped. It locks in the up or down position. So should take the hard landings.

Steerable piece is generally easy and next.
Then I focus on the empanage. Adding servos linkages,band control horns. I'm using the flossing picks from the DT. (60/$) they fit the landscaping wire perfectly

I realize a small mistake. Can you spot it?

That's right... This piece is made to sit flush against the tail section and that control arm and pushrod are in the way.
U-Connect the elevators together. Cutting one groove will work.

Line it up and zero it out.

Last bits are install the aileron servos

Now it's starting to look like a viking S-3b.

I am excited to see this come together. I have picked up spray paint to get it right

 

[PsyBorg]

Hey bro. Not sure if its camera angle or my eyes but it looks like the elevator does not move evenly on bot sides of the v stab. Id hate to see you give it a toss on a maiden and cork screw at launch. Its looking too good to be a sacrificial lamb first toss like my builds seem to be hehe.

 

[FoamyDM]

Hey bro. Not sure if its camera angle or my eyes but it looks like the elevator does not move evenly on bot sides of the v stab. Id hate to see you give it a toss on a maiden and cork screw at launch. Its looking too good to be a sacrificial lamb first toss like my builds seem to be hehe.

I'll take a closer look.

 

[FoamyDM]

a couple more parts.... and retractable gear might be possible.

 

[cyclone3350]

Holly Cow. U R out doing us all on this one. I am interested as to how those Power Fun work out. I just did a quick scan on this thread, but will read it through latter. So far very impressed.

 

[FoamyDM]

This Gear is what's holding me up. I have an Aft cone, I debated about getting a 12v retractable antenna for a car to put in and out the sonar boom out the back. I would LOVE to maiden it at FF. And if the printed parts come out like they should. I will be all set!

 

[FishbonesAir]

Did it work?

 

[FoamyDM]

Dunno.. I go scared. I have some repairs to effect before attempting. The project isn't lost yet.