veloxsouth
Member
Holy Crap what is the wingspan on that thing, almost Kraken size?! They look like 5g given the perspective of the picture. Is it carrying a 9" prop on there? I has to be big. The Spear is a 41" wingspan, the Arrow is like 30" give or take a couple inches. Maybe try to downsize a bit and get it to fly good at a smaller size.
I know exactly what you are sayin about getting the splines to line up in opposite directions, pretty common with all the servos I have dealt with, actually I have never seen them line up. It doesn't really make a difference though. You do have a lot to work with in this wing given the info you have so far. To what lengths are you planning on taking this specific build? Have you built a FT wing stock to spec and flown it yet?
Thanks for reassuring me that the servo direction doesn't really make a difference. I won't concern myself with it anymore.
To answer your questions, it's a 50" wingspan with a 9" prop, and I haven't built a stock FT wing yet. My first ever RC plane was the FT Explorer in the opening post, which I quickly and completely destroyed.
It flew amazingly well on that last run...until it didn't. I was extremely happy with its handling and tracking where I point it right up until the servo simply came unplugged from its wiring extension during its flight, or at least I'm convinced that's what happened. So the only things I would like to change so far are hot gluing the wiring down since those extension wires were really loose, and swapping out the foam spar for a wooden one, and giving the control horns on the elevons more surface to work against.
The specs were
50" wingspan
912g All up weight
4.5 sq feet of wing area
cubic wing loading of 3.4
35 degree sweep
aspect ratio of 3.9
The linkage rods were 0.055" 'music wire' so the coffee stirrers and zip ties were a little superfluous for the length I was dealing with.
2 parallel 3S 2200mAh batteries
installed a 9x6 prop but I originally designed for a 10x4.5 prop.
ecalc link here