I 'd like to report my experience with this scratch build.
I needed an aerial platform with ample fuselage space since I am experimenting with UAV systems and I needed a housing for the electronics.
When I saw the fowl flyer swappable I liked the slow flight characteristics and the big accessible fuselage.
I built it with a 1200kV (I think, that or 1500) motor and a 10x4.7 propeller.
But things don't always go your way: I couldn't find two balsa sticks straight enough for the tailbooms in the local suppliers. They were all too crooked. I decided to pick up some walnut ones.
But then the tail was too heavy and in order to balance it I placed another 3S battery in the front.
But then the plane was too heavy for the wing lift and couldn't even take off properly (judging by my limited experience).
That chain of events, and two crashes from 1m high, lead me to abandon this platform.
One solution would be to move the wing further back for its balance point to match the C.G., but the mounting method doesn't easily allow for that.
Another solution would be to build a new, larger wing, but at this point I won't pursue it, since I don't feel that would guarantee results.
I think I 'll be moving to something commercial for now.
In the aftermath, it would have been nice if I knew the lift capabilities beforehand.
I saw the video. I spot a single centered vertical stabilizer. I think I see the elevator and rudder servos placed on the horizontal stabilizer. That would weigh that tail down a bit (and I think it shows in the video), but no-where near what I did.
His total weight is stated at 2.5lbs/1.13kg. Definitely less than my 1.51kg.
It looks fun, but I had a permanent-ish platform in mind for my experiments and I now see that's a bit hard with a home-built foam plane.
I may make another take on the Fowl Flyer Swappable, but that day isn't tomorrow.
I don't want to highjack the FF thread, so if this is deemed offtopic, mods, please move it.
My cargo needs are the following:
I have an Arduino Mega board and a custom shield @ 150gr.
This needs to be connected to an external board housing a small GPS unit @ 17gr,
and later to the 3DR pitot sensor kit, also a few gr.
Cameras are not a concern for now.
A flying wing may have more accessibility but it won't be able to taxi or take off autonomously and has more aggressive flight characteristics that make my life harder.
I was thinking about the ST model Discovery. High wing for stability and hopefully enough internal space.
So I'm not to good at the arts and crafts, which makes working with the tiled plans a real pain. I'll use it for parts with curves, but for square parts I can use a ruler and a pencil and get a much better result. So for you guys like me, attached is the fowl flyer wing with the dimensions overlaid.