HobbyKing.com New Products Flash Sale
Reply
Thread Tools
Old Apr 16, 2012, 07:14 AM
Gaui X3, Nano CPX (two)
BladeScraper's Avatar
United States, MO, KC
Joined Jun 2011
3,189 Posts
Discussion
Scratchbuilt 3D Foamie Yak 55 25"

Well, spending some money again! This time it's a 25" Yak 55-ish plane.

I have the body/foam cut out, but I don't have any electronics. I need to buy those. All I have is the foam cut out. Here are the electronics, etc. I plan to use.


I will put a "✔" if I have it.
Mini Yak 55 (scratchbuild)

Motor: Dualsky Xmotor 1812CA-42T Motor 25W
http://www.2dogrc.com/product/dualsk...-42t-motor-25w

ESC: Turningy Plush 6A
http://www.hobbyking.com/hobbyking/s...ontroller.html

Battery: ZIPPY Flightmax 180mAh 2S 15C
http://www.hobbyking.com/hobbyking/s...h_2S_15C_.html

Servos: HK-282A Single-Screw, Ultra-Micro Servo 2g / 0.2kg / 0.08sec
http://www.hobbyking.com/hobbyking/s...g_0_08sec.html

or

http://www.hobbyking.com/hobbyking/s...cro_Servo.html

Receiver: OrangeRx R415 Spektrum DSM2 Compatible 4Ch Micro 2.4Ghz
http://www.hobbyking.com/hobbyking/s...dProduct=18827

Transmitter: Dx6i ✔

Foam: 6mm EPP ✔

Hinges: NOT WELDERS GLUE HINGE! Micro Hinges 23x7x3mm (10pcs/set) ✔
http://www.hobbyking.com/hobbyking/s...0pcs_set_.html

Control horns: I am still deciding.

Heat Shrink Tubing: 2mm 1mtr Black
http://www.hobbyking.com/hobbyking/s...ACK_1mtr_.html

Plugs:
http://www.hobbyking.com/hobbyking/s...5pcs_bag_.html

Props: GWS 7x3.5
http://www.hobbyking.com/hobbyking/s...dProduct=10045



I have the airframe and the carbon fiber reinforce for the elevator. Just need the things listed above that don't have a check next to it and a bit of other accessories and I'll be good to go! I have a few pictures of the foam cut out.
BladeScraper is offline Find More Posts by BladeScraper
Last edited by BladeScraper; Apr 16, 2012 at 07:21 AM.
Reply With Quote
Sign up now
to remove ads between posts
Old Apr 16, 2012, 01:56 PM
Registered User
dynodude's Avatar
El Cajon, CA
Joined May 2007
320 Posts
Is that EPP? What weight/thickness are you useing? Keep us posted. I have been thinking of doing something small like this.
dynodude is offline Find More Posts by dynodude
Reply With Quote
Old Apr 16, 2012, 02:16 PM
WickedFunRC's Avatar
Utah USA
Joined Jun 2002
2,236 Posts
Looks good, I built a 22" Yak with 6mm 1.9# EPP last year and used similar electronics. The hinges you are using are really nice and loose which will help a lot with the small 2g servos. I used Goop hinges which are pretty loose as well, and UV resistant.
WickedFunRC is offline Find More Posts by WickedFunRC
Site Sponsor
Latest blog entry: Latest Video's
Reply With Quote
Old Apr 16, 2012, 05:11 PM
Gaui X3, Nano CPX (two)
BladeScraper's Avatar
United States, MO, KC
Joined Jun 2011
3,189 Posts
dynodude: Yes, it is 6mm EPP, I believe 1.5lb.


khen: Yeah the guy that built it for me said he could use Welders Hinges (glue) or those plastic ones. I chose plastic because he said (and I agree) they are, as you said, easier on the servos. I DID however put a little hot-glue hinge (just like Goop or Welders) at both ends of the ailerons and wings where the hinges didn't do anything (because the servo horn will push the aileron not move it!) So that gives it some strength there. But yes it is definitely easier on the servos (the elevator is the only hinge that isn't very loose, about as resistant as the Welders or Goop hinges)

There is this weird kind of tape that is basically paper with adhesive on it! Tears way easier than masking tape but stick to EPP VERY well. Unfortunately it is not wide enough for a plane bigger than an UMX Extra 300. I used it all anyway!

Oh, and BTW, nice 22 plane you got there! How's it fly?
BladeScraper is offline Find More Posts by BladeScraper
Reply With Quote
Old Apr 16, 2012, 05:17 PM
Gaui X3, Nano CPX (two)
BladeScraper's Avatar
United States, MO, KC
Joined Jun 2011
3,189 Posts
Quote:
Originally Posted by dynodude View Post
Is that EPP? What weight/thickness are you useing? Keep us posted. I have been thinking of doing something small like this.
Also, get plans from Gene Bond (the 30" 3D EPP trainer) and shrink the plans to 85%. That will get you about 25.7".
Plans:
http://www.rcgroups.com/forums/showt...ight=gene+bond
Shrink the "Tiled" down to 85% which like I said will get about 25.7" (just above my plane)

There are 2 different sizes, a 30" and a 36".
JUST MAKE SURE YOU DOWNLOAD THE 30" VERSION, NOT THE 36"!
BladeScraper is offline Find More Posts by BladeScraper
Reply With Quote
Old Apr 16, 2012, 07:00 PM
WickedFunRC's Avatar
Utah USA
Joined Jun 2002
2,236 Posts
Quote:
Originally Posted by kpilot786457 View Post
...........

Oh, and BTW, nice 22 plane you got there! How's it fly?
The little Yak flies very well, just like my bigger 32" yaks. It's AUW is 60g which isn't as light as I wanted for living room flying. Next one I'll do out of 1.3# EPP. I did have a few fits with the 2g HK servo's, I had to take a few of them apart and clean the pots. I would recommend ordering some spars.
WickedFunRC is offline Find More Posts by WickedFunRC
Site Sponsor
Latest blog entry: Latest Video's
Reply With Quote
Old Apr 16, 2012, 07:26 PM
Gaui X3, Nano CPX (two)
BladeScraper's Avatar
United States, MO, KC
Joined Jun 2011
3,189 Posts
spares? Yeah you never know with HobbyCity.
BladeScraper is offline Find More Posts by BladeScraper
Reply With Quote
Old Apr 25, 2012, 07:28 AM
Gaui X3, Nano CPX (two)
BladeScraper's Avatar
United States, MO, KC
Joined Jun 2011
3,189 Posts
I worked on the plane a little bit a while back. I used CA and a little hot glue. I also put some 1mm carbon rod and some 0.8 and 0.7mm. I used a small carbon strip for the wing. I have tail bracing to stiffen up the tail. I'll try to get a pic soon.
BladeScraper is offline Find More Posts by BladeScraper
Reply With Quote
Old Apr 27, 2012, 06:24 PM
Gaui X3, Nano CPX (two)
BladeScraper's Avatar
United States, MO, KC
Joined Jun 2011
3,189 Posts
Well, as I said, I've got it built. I still need the electronics. I think I will use the Zippy Flightmax 180mAh 2s, and the Turningy Plush 6A ESC. The plush has much better reviews than the HK brand. Even though I am using some carbon fiber rods to stiffen up the tail, I am going to try to build A.L.A.P. (as light as possible) meaning NO hot glue, only CA glue. I have plenty of time to make the plane, no rush really. So I really won't be doing much with it until I get enough money, then order it. Then wait another month to get it. But anyway, at least I know I will be getting a quality, reliable, and efficient motor from Dualsky.


paint



I am going to try to go for either a camouflage or standard flame and checkered scheme. Like these:

camo

http://www.psdgraphics.com/wp-conten...camouflage.jpg

flames and checkered

http://www.knifeedge.com/forums/down...f6v0137673.jpg



control horns





So, I need the max throws for practicing 3D. On a plane like this to get the control throws as big as I need, I think I am going to get these TINY little control horns from hobby town, put the pushrod on the innermost hole on the control horn and cut the rest off, and limit throws with the "Travel Adjust" function on the Dx6i to limit the throws to where I need them. (cutting the other holes off saves a bit of weight. As I said, I am going to build A.L.A.P.)

Thanks guys!




-kpilot
BladeScraper is offline Find More Posts by BladeScraper
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Wanted Yak foamy 55 3d wildone Aircraft - Electric - Airplanes (FS/W) 1 May 04, 2012 12:00 AM
Discussion What is the biggest scratchbuilt 3d Foamy out there?? And is there free plans?? Team3D Foamies (Scratchbuilt) 9 Apr 17, 2012 04:52 PM
Wanted Dynamic Foamy Yak 55 PiperCub49 Aircraft - Electric - Micro & Indoor Airplanes (FS/W) 0 Feb 23, 2012 06:29 PM
Discussion 60 inch Yak-54 Scratchbuilt foamie from 1/2" Pink insulation foam BladeScraper 3D Flying 0 Nov 26, 2011 05:22 PM
Discussion Please help with my first scratchbuilt 3D foamie, it flies like a dog jetada Power Systems 16 Nov 01, 2011 03:28 PM