60" Blunt nose Stealthwing

[Coyote]

Hi guys, well i decided to jump on board the Stealthwing train. Man these things look impressive. Almost indestructable, invaluble for me

But im not making it, Owen himself is making the bird, then im finishing off.

So whats going into this build

1x Gopro HD camera
1x Flight camera, going to be a Security camera 2000 OSD cam
1x Dragon OSD
1x Dragonlink
1x Tunigy Plush 60 Amp ESC ( very FPV friendly )
2x HS645MG`s
1x Motor XYH35-42 1250kV 45a
10 x 6 Folding prop

After a lengthy chat with Owen, we came up with a tailored design so is exactly what i wanted. Big thanks to Owen for taking the time and offerring up loads of ideas

Features are going to be :

HD recording with no plane at all in the footage, tilt on the HD camera
Full OSD with GPS, Return To Home, Waypoints, Missions, Flight Stabilizer for rock steady HD recording
UHF Control for virtually unlimited range, well as far as the plane could carry it.
2x 5000 3S lipos, yes, 10 amps of on board power giving 1 hour of flight each time.
At 10A cruise speed of around 20-30mph and that should give a distance of 20 - 30 miles on a still day
Seperate flight camera for larger display with OSD seperate from Gopro. Because of some issues reported with the Gopro hooked up to the flight systems im avoiding this, it will be powered off its own battery and isolated from everything.
A moulded canopy will reduce drag even further for better efficiancy
Gopro chair fitted to house the camera and provide a tilt feature

Motor info : On a 3S lipo
10x6 Folding Prop
42.4 A
10.97 v
465 W
11500 t/min
Thrust 1705 g
Efficiancy 70 %
84.1km/h

So its already quite a way through so far, Owen has kindly sent me some pictures so here they are :
















The paint schemes going to be fetching chevrons underneath with a white base and red / blue digital camoflage graphics on top

Should be a beast
[hr]
Ok so Owen`s now received the goodies from me thats going into the wing so he`s began the install

First ups the Dragonlink receiver going in. The cool thing about the Dragonlink to Dragon OSD is really you could wire it with just one servo lead, that it, all your channels are carried in a full PPM stream down channel 9.

In my case im having a seperate power feed and RSSI monitoring so 3 more wires only needed :



Nice and neat under its cover :



Antenna to be placed inside a plastic tube to keep it ridged later on

Next up is the Vtx, this is going in the other wing keeping the two antennas as far away as possible from eack other. Same principle :



The motors now on and the ESC is getting positioned here with venting for better cooling :



Its really getting there now. I have the DOSD here, although im getting a replacement sent out but it should be here within a week fingers crossed

[Coyote]

The lamination begins whoop whoop !!!



Laminating finished :



Now thats looking totally unique and cool man :rocks:

Heres how im wiring mine up, its all based on 12v components apart fron servos. I always use 12v equipment because its less complicated, less failure points and all the equipment will fully work all the way down to 7 volts if there is any fault ie a cell goes down on my lipos. With 5v systems, if anything drops the voltage you can end up with no transmission which i dont like the sound of



Well Owens been at it again lol

No his misus isnt pregnant again already, he`s been busy on the Coyotewing, how he juggles all this is beyond me but appreciated

So progress :

Elevons are now on and hinged



Elevon horns and linkages now attached



The motors now in its home :



ESC and Current Sensor for the DOSD are now sitting in their resting place :

[hr]
This is how shes looking so far. Batteries and gopro chair to add. Ill attach the winglets when it arrives :



I asked what the overall weights looking like and Owens replied :

Btw, the weight as in the pic is 1200g the batts weigh 800g and the gopro, cam, prop and wiring will be I expect about 200 - 250g. So we're looking at a total weight of 2250g or so.

2 1/4 kg, shes a big girl thats for sure

Heres how the cameras are going to sit. Side by side on the blunt nose with no plane in shot to spoil the view

We decided to save weight and go for the new epp gopro case



Owens crafted one of his GoPro chairs but customised it to fit flight camera too.

Next the battery locations. Where oh where do you put 2x 5000 mah lipos to get the cg right ?

Owen came up with a simple but effective solution. The first lipo will be behind cameras the second in the hatch. The second one will be on the CG line. This means i can choose to fly either 1 or 2 lipos which is a great

First lipo location :



Second lipo location :



Braces will be added in the hatch compartment so the lipo cant move forward in an unplanned vertical landing and avoids damaging my OSD

So, camera location sorted , lipo location sorted, winglets being fitted by me. Thats the lot !

In my first post i mentioned a speed pod to reduce drag. Well Owens come up with this, covers the lipo and looks slippery as it gets :



Motor, hub and prop all fitted in place now too. Aeronaut CAM props are sweet



Now we are done. Owens going to cut in the first lipo. Make a securing point for the second and then its as complete as he can get it.

Bring it on !!!!!!!!!!!

[Coyote]

Well she has arrived whoop whoop !

I was greeted by the postman with a monsterous sized package this morning. I instantly thought " Yep Donna`s gonna kill me " looking at the size of it. Turns out the wing itself was indeed much smaller and very well protected for transit. No damage at all to it i found to my enjoyment.

After taking it out it was apparent she is a big un

Owen sent up two packages, the first with my equipment in the second the wing. It was easier and safer that way. So i set about fitting the equipment back in. First was the Dragonlink, only one servo wire and an RSSI wire is needed for this setup to work. I fitted a protective piping to the active element :



Next was the cameras, a bit of velcro for the Gopro, plug in the flight camera and elastic band them in situ :



The gopro chair is very well made, the cable pre fitted and even a grommet for protection, nice



Ive choosen magnets as my weapon of choice for flap security, so i started installing them :



I fitted some heavier duty magnets either side of the main lipo, this wil be to hold the speed pod on securely :



Owen has cut away the underside of the speed pod so the rushing air that goes under the Gopro chair is channeled harmlessly away reducing drag to a minimum :



Two configurations can be flown looks wise, to pod, or not to pod :



The 5.8ghz video transmitters transmitter looks very small on this size wing i noticed, a bit out of place really

Again, nearly a month now, still no DOSD !!!!! so wiring just has to sit there until its arrival



Once its here it will be uber neat as always and loads of spare room, although looking at it now you have to use a little imagination

So the end product so far ? Well heres a pic to give a bit of scale but ill update as we go then get some better ones

[hr]
Well another update, i decided to go with the chevrons on the bottom and a tribal design on the top. So Keith and I set about the bottom.

To give you a even better idea of the size, here`s 6ft of me the very proud owner Oh and the new look bottom



Even the ASW doesn`t look that big anymore lol

[hr]
ted to tOn the ASW i wanted the lower Dragonlink antenna to remain straight, i tried a spring but being metal this would / could effect performance.

With the Coyotewing as with most the antenna being stiff would be no good for landings. Having it in a plastic tube such as a push rod tube would work to a degree but pivoting using the wire would weaken the wire after a while so another solution had to be thought up.

After a few ideas Keith came up with a cracker, the idea being we needed antenna to fold back over for landing but correct itself in flight, have enough strength to combat air over it and place no strain on cable. The answer, cable tie and heatshrink tubing

What we did was hot glue the cable ties base to the wing behind the antenna cable, feed it with the antenna up the heatshrink tubing. The cable tied provides the support not the cable, it springs back after bending and has enough strength to cope with winds

[Coyote]

Forgot to take a pic of us doing it but heres the cable tie behind glued down :



And showing the flexibility of it :



Hey Presto, full range Dragonlink capabilities with a free mod [hr]
My lipo`s are 5000 mah each, my DOSD from the suppliers has been over 4 weeks now. First one took 4 days though ???

But my DOSD from Martin ( Badlands ) has turned up whoop whoop !!!

When first powered up something was wrong, nothing appeared, after checking a few things and chatting with Martin and Shikra we came up with the theory that the programming was set to Martins radio so might not be playing ball. The second problem was my USB - TTL converter wouldnt talk to it either.

Shikra kindly found after a while that there was something wrong with the Windows 7 driver, so reinstalled and wehey contact ! I then flashed the DOSD`s memory and she fired up straight away

So ive sat most the night checking, double checking and setting up autopilot but now apart from calibrating current sensor im ready to rock n roll

So neatened up the wiring, going to extend one of the servo wires though



Todays update, well not great. After checking everything over everything checked out fine. DOSD working well so it was maiden time !

The only thing i had not checked was my transmitter. I hadnt checked the trnsmitter at this point just tapping into the video out from the DOSD instead to save burning vtx out after being on and standing still. Thats when it went wrong, i plugged the vtx power in, plugged in the lipo and plums of smoke and flames followed.

After pulling the lipo off and waiting for the smoke to clear i found the vtx cable had fused itself together right though the spar.
What had happened was the +ve wire was crimped into the -ve side of the plug and vice versa. The vtx had shorted the lipo out

I then spent all afternoon tryng to clear the fused wire out from in the spar. The problem was it had melted the video cable too.

Ive now got new wires in place and ill try the vtx tonight but im not holding out much hope. Expensive lesson, if vtx is fried that £80 ive not got down the drain, lesson being take nothing for granted and check everything !

The good news was nothing else seemed damaged, the DOSD was fine so i went to Keiths to set the current sensor up. The isense wire has to be calibrated but the max voltage value in the menu was 3.3v mines kicking out 7.5 volts ....... bugger lol

Still we had the watt meter sat there so here`s the figures :

At WOT we were getting 311 watts at 29 amps on a 10x6 Cam folder

311 / 5 = 62w / lb

So if 60 watts per lb will fly it will fly. But im tempted to step up to a 11x8 prop though to get a bit more. 30 amps is still 20mins of WOT flying and a breeze for a 60 amp ESC.
[hr]
Well its had its maiden !! Happy days, she flew smooth as it gets. A bit of trim and i was away. Its exactly what i asked for, no speed demon but plenty of grunt low down. Cruise was very slow too which was spot on.

The vtx however failed, i gave Keith and Darren the goggles while i LOS`d her and even at 100m the video was failing

I flew FPV for a bit close in, very happy with the cameras performance, it was nearly dark and the camera picture was like daylight which was nice.

Two mistakes, 1) I forgot to put SD card in Gopro > 2) My recorders cable was faulty, i could see it was recording but couldnt see the screen when i stopped flying, so i took a guess and pressed record again and waited for lights to calm down before powering down. This was a mistake, you had to press stop on the remote so it didnt save it > >

But tonight ive managed to make what appears to be a working transmitter from the damaged vtx. So far ground tests have been 100x better than tests yesterday with suspect vtx so looks like im all set

Now its been trimmed for level flight with the right ammount of reflex i marked the elevon positions and zero`d the trims. I then adjusted the linkage to match the marks so everythings easier to work from. Might help the autopilot too [hr]
Ok, so no FPV after a camera and vtx fail so i had today free to fine tune.

This morning my Otto current sensor turned up, at last i could get readings of Voltage, Current and mah used in flight. I decided to spend the day at keiths so went up and started modding the current board. Three resistors had to be removed and one side of the tracks bridged. Then i fitted the deans connectors.

On went the watt meter and calibration began. Didnt take too long



Neatened up the wiring more too.
I need to protect my DOSD from the second lipo so i made a removable brace from 3 peices of plastic. A shut should not have any ill effects now





Because money is tight the graphics are gong to have to wait but i needed some visualization on the top. I put some black tape down on it and trimmed it up a bit. I did the front blue lipo and speed pod too

[SENTRY]

Poor little ASW28 My favorite.

[Wearyman]

If I were you I would add a small sloped section of foam in front of the camera mount. The wind is gonna tear the rear foam clean off, even with the gap. Better to CA down a small foam wedge than risk losing that bigger hunk.

[Coyote]

I could do, so far though ive flown it a few tmes and the magnets ( very strong ) have kept the rear pod on, both at max speed and v fast dives

[Wearyman]

Huh. Well that's good. I guess that gap fulfilled it's job then. Nevermind!

[Mark Hitchman]

That is one sweet wing, awesome build.

[kev.au]

That thing is a beast!, can't wait for some FPV video!.


I paid for a Stealthwing last week and can't wait to start building it .



Cheers, Kev.