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Balsa USA Stingray 120

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Old 08-22-2014, 09:35 AM
  #76  
bicyclemonkey
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25% done with the wing now lol.

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Old 04-14-2015, 11:22 AM
  #77  
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I just realized I forgot to finish posting pics...

Wing is covered!








This part was pretty tricky but it came out OK.





Bottom of the fuse.








The other side.








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Old 04-15-2015, 07:42 AM
  #78  
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Just have to cover and hinge the tail.


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Old 04-15-2015, 01:21 PM
  #79  
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Looks great,you should maiden by this weekend. jeffo
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Old 04-15-2015, 02:04 PM
  #80  
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Thanks! I got the horizontal stab glued in place as well as the elevator hinged and glued.


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Old 04-16-2015, 06:10 AM
  #81  
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Got the vertical stab epoxied in place!





Straight enough lol





Oh, and the 3-inch Tru-Turn spinner came in...Boo approves!


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Old 04-16-2015, 08:39 AM
  #82  
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Tape to hold it, I would never have thought of that, I use squares but tape looks like a good idea to me. If the wind ever quits blowing you may get a chance to fly it this weekend, the weather looks great on the news!!
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Old 04-16-2015, 08:53 AM
  #83  
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I used a square to line it up then taped it while the epoxy dried.
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Old 04-16-2015, 09:01 AM
  #84  
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Tail braces are soldered and installed.








For some reason the solder didn't want to flow very well through the solder link. I guess it didn't like my flux. It's solid though, it wouldn't pull off.


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Old 04-18-2015, 09:55 AM
  #85  
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The tail wheel is installed. It looks a lot bigger in the pic than in person...probably from the angle. This was from a box of old RC stuff I inherited.


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Old 04-19-2015, 06:13 AM
  #86  
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Just a few more minor items on the list. The winglet things are installed.





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Old 04-19-2015, 06:19 AM
  #87  
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In the photos it looks like you used the golden clevis?? If so they don't take solder. The solder clevises are the silver and usually state solder clevis on the package.
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Old 04-19-2015, 06:24 AM
  #88  
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Originally Posted by Gray Beard View Post
In the photos it looks like you used the golden clevis?? If so they don't take solder. The solder clevises are the silver and usually state solder clevis on the package.
Hmmm, I inherited these clevises and they were divided in a screw bin organizer tray. The ones I used weren't threaded so I made the assumption they were for soldering.
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Old 04-19-2015, 06:28 AM
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Waiting for the new motor to come in. Since I can't balance the plane without it, I did the wheel pants...

They are Sig Four Star 120 wheel pants and they came in pieces.





The instructions said they are to be taped and thin CA'd along the seam. Pretty messy!





Then you have to cut the hole out for the wheel. I drilled a hole then used a drum sander on my dremmel.





It's reinforced with a piece of light ply epoxied in place with blind nuts behind it.








One side done.


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Old 04-19-2015, 06:55 AM
  #90  
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I haven't ever bought any of the golden clevises without threads but I have some from ARF assembling and I think they were used as rigging? Been a long time. I buy Dubro and there solder clevises are silver and take soldering well but are labeled as solder clevises. I had gone a bit nuts once trying to solder the gold colored ones to a control rod, I got it but it broke loose finally and caused a crash. That was a long time ago.
With the ABS plastic parts like cowls or pants you should glass them on the inside so they don't split or crack. I don't put the pants on until after maiden and I get a couple days worth of flight with the plane. I have been known to land a bit odd with a new plane and break the wheel pants. I also fly off of some very nasty surfaces though.
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Old 04-19-2015, 07:39 AM
  #91  
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Those are silver colored clevises

It's balanced with 6s 5000mAh with no added weight, front or back!





New motor is installed. No vibes!





All that's left is to Loktite all the metal screws, set the control throws, install with windscreen and mount the rx!


I'll get a shot of the whole plane in a bit..
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Old 04-20-2015, 05:33 AM
  #92  
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It came in a 10.5 lbs ready to fly which is about 1.5lbs lighter than I expected.


These pics are without the windscreen, so it looks kinda weird.














1600 WATTS!!!





70A


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Old 04-21-2015, 06:21 AM
  #93  
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The maiden flight...

https://www.youtube.com/watch?v=IZYd3djaUcQ
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Old 11-11-2016, 01:49 PM
  #94  
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Its been a while since you finished your stingray..
You posted a picture of My stingray..... back at the begining
of your thread.... its sitting on the pic nic table..
how do you like your plane ?
I just ran across this thread I got my plane down
and installed a 20cc motor instead of the four stroke I
had in it.. I was hoping that you still had yours...
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Old 02-15-2019, 07:44 AM
  #95  
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Originally Posted by bicyclemonkey View Post
I wound up with a stingray 120 to build as a result of sig being temporarily paralyzed do to a fire in there Saw room. Looking through this seems to me to be a Big Stick like plane with an added turtle deck and some build up on the nose and wing to make it seem mid wing. I am getting ready to start it now...... Anyone ever seen or heard of building this thins like a Big Stick? you know just cap the rear of the Fuselage with some light Balsa and then don't build the wing and nose stuff..

I am seriously thinking of doing this..
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Old 02-19-2019, 08:18 AM
  #96  
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How did the plane balance? Did you have to add any weight to the nose? Thinking of getting one sometime. Cobra motors are great motors for the money . I have bought a number of those along with Scorpions and they perform very well.
BTW. I would not mount the ESC as you have, on top of the battery pack. Mount it where it will receive adequate cooling.
I'm building a Sig Senior and mounted the ESC under the battery platform inside the airstream through the fire wall.
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