RCU Forums

RCU Forums (https://www.rcuniverse.com/forum/)
-   RC Pattern Flying (https://www.rcuniverse.com/forum/rc-pattern-flying-101/)
-   -   Vortex F3A build thread (https://www.rcuniverse.com/forum/rc-pattern-flying-101/11665994-vortex-f3a-build-thread.html)

HPiorun 09-26-2019 10:27 AM

Looks great Alex! For a huge airplane it has really nice lines.

ted32776 09-26-2019 01:28 PM

Really nice to see it in final shape. I didn't see that much sweep in the vertical from early depictions...looks very cool. You know, with that degree of perfection in the balsa skin work and knowing you're going to cover all surfaces, you really should consider various colors of transparent film. When she looks that good naked, why put clothes on her.

Alex Voicu 09-26-2019 11:54 PM

Thanks a lot guys.
From the pictures it was difficult for me to imagine how it will look like in the end, so i used the images posted above as background in my CAD software and by carefully matching the camera angles and field of view, i managed to add the computer generated cowl, canopy and landing gear.
The camera lens distorts the proportions quite a bit so in real life the front end is not so large compared to the tail. The sweep in the vertical tail is also an effect of the camera lens perspective, in reality the trailing edge of the rudder is perfectly vertical. The CAD images from the first post in this thread should give a much better impression of the shapes and proportions because the camera lens has a much lower field of view (less perspective distortion).

Unfortunately this is as far as i could get with the Vortex project before moving, so it will take a while before i can get back to it but i will continue to post the rest of the building instructions using CAD images.

https://cimg0.ibsrv.net/gimg/www.rcu...4a6bdca867.jpg

https://cimg9.ibsrv.net/gimg/www.rcu...29953b5a00.jpg

HPiorun 09-27-2019 04:40 PM

Well it looks really good! Have you made the cowl and canopy molds yet? I will miss your up dates, hope you can get back at it soon.

frequent flyer 09-27-2019 05:30 PM

https://cimg0.ibsrv.net/gimg/www.rcu...d60f97afcf.jpg
The plugs are almost finished and the the molds should be done in about week. Most that have ordered want contest balsa and I'm just waiting for it to be delivered. I should have it all coming together in a week or so.

ted32776 09-28-2019 09:15 AM

Hey Don. I've not seen good old red nitro glazing putty for twenty years, LOL. Brings back memories, surprised they still make the stuff. Not picking at you as it's perfectly fine for such an applications. I'm wondering, have you eliminated the cooling fairings, leaving these up to the individual modelers to fashion as they like? Also, is the final choice to go with zero thrust offset and leave any changes to that for the individual modelers as well? Thanks, Ted.

ted32776 09-28-2019 09:22 AM

Hey Alex. We'll miss "The Alex's Vortex Show" till the new fall season debuts, same channel, same time. I would imagine the characters will remain and there will be outdoor filming scenes as well. It's been the most exciting forum for awhile, heh, heh. Good luck with your move, Ted.

frequent flyer 09-28-2019 12:43 PM

No I didn't forget the cooling fairings they got put on today. those pictures are a week ago.

HPiorun 10-01-2019 08:51 AM

Looks good Don, please let me know when the kits are ready...patiently waiting:)

chuck4816s 10-01-2019 10:09 AM

Price
 
Don,

do you have a price point yet for the kit?

Krille 10-01-2019 12:38 PM

My own Vortex is starting to look like a plane now :)

https://cimg9.ibsrv.net/gimg/www.rcu...f8beb88663.jpg

frequent flyer 10-01-2019 02:34 PM

kits
 

Originally Posted by chuck4816s (Post 12553908)
Don,

do you have a price point yet for the kit?

I've made , bought and ordered everything for the kits. I have the landing gear, wing tubes tubes, stab tubes in stock. I ordered as much contest balsa as all my suppliers had and I'm waiting for it to arrive. I'm still working on the price there are a lot of sheets that go into cutting everything and I don't want to miss anything when I set the price.

ted32776 10-01-2019 04:13 PM

Hey Krille, looks good. Just realized the massive size when compared to that bottle and Dremel on the bench!

Alex Voicu 10-01-2019 10:55 PM


Originally Posted by Krille (Post 12553937)
My own Vortex is starting to look like a plane now :)

Great work, and even more impressive considering that you made all that in less than a month !

Krille 10-04-2019 09:08 AM


Originally Posted by frequent flyer (Post 12553967)
I've made , bought and ordered everything for the kits. I have the landing gear, wing tubes tubes, stab tubes in stock. I ordered as much contest balsa as all my suppliers had and I'm waiting for it to arrive. I'm still working on the price there are a lot of sheets that go into cutting everything and I don't want to miss anything when I set the price.

Yes it is a big bird, here it's compared to my wind s. The vortex fin is about 18cm taller then the wind s 🙂

https://cimg5.ibsrv.net/gimg/www.rcu...32a9b45883.jpg

https://cimg6.ibsrv.net/gimg/www.rcu...350c891e2f.jpg

Push 10-11-2019 12:29 PM

Hi Alex,
really great design you did. I'd like to build one, too.
I plan to make the parts on a CNC drilling machine.
Would you be willing to share the original dxf files, so that I can create the input files for the drilling machine?

Cheers,
Ro

chuck4816s 10-11-2019 08:15 PM

They should be on the first page.

Alex Voicu 10-11-2019 11:57 PM


Originally Posted by Push (Post 12556053)
Hi Alex,
really great design you did. I'd like to build one, too.
I plan to make the parts on a CNC drilling machine.
Would you be willing to share the original dxf files, so that I can create the input files for the drilling machine?

Cheers,
Ro

Hi Ro,
You can find the drawings in the first post in this thread: http://www.rcuniverse.com/forum/12531336-post1.html
You can also find the 3D models for reference in post #4.

Anyway, please read carefully this part of the post:
"All the major structural parts are found inside the “Laser Cutting Files” folder - I do not recommend cutting these parts on a CNC router! To ensure proper interlocking between parts, I used a small offset to compensate for the width of the laser beam. This offset is quite small for soft balsa or liteply parts (0.15mm) but it can be double for tough materials like the 3mm hard plywood. If you use a CNC router, you will have to sand off this small offset to make the parts fit."

frequent flyer 10-12-2019 12:36 AM


Originally Posted by chuck4816s (Post 12553908)
Don,

do you have a price point yet for the kit?

Just got 10 grand worth of Contest balsa delivered two days ago and I'm working on my cost today.

vatechguy3 10-22-2019 03:31 AM

What would it take to add a motorbox and a pipe tunnel for a gas engine??

tony

flywilly 10-22-2019 05:31 AM

Don is working on a wet power conversion for the Vortex. Email him ( [email protected] ) for details.

frequent flyer 10-22-2019 07:33 AM

Ys version
 
https://cimg7.ibsrv.net/gimg/www.rcu...0109664b2e.png
https://cimg0.ibsrv.net/gimg/www.rcu...df9e401fbe.png
These are the images of the new cowl to accommodate the YS Engine.

GootyS 10-23-2019 01:08 PM

How does one modify the trailing edge of an airfoil to make it "thicker"?

chuck4816s 10-23-2019 08:15 PM

My suggestion would be to build one and fly it first.

Alex Voicu 10-23-2019 10:43 PM


Originally Posted by GootyS (Post 12558599)
How does one modify the trailing edge of an airfoil to make it "thicker"?

The trailing edge is 8mm thick at the wing root and 5mm at the tip. If you want to make it thicker, you can simply cut the trailing edge to get the desired thickness, sand it and apply a 2-2.5mm balsa strip.


All times are GMT -8. The time now is 12:06 AM.


Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.