S600 V2 - Bluntless S800 Reptile Flying Wing

thingiverse

This Version 3 update has several enhancements from the original S600 design. The first change is the addition of aerodynamic winglets that extend the wingspan to 31". Next, I increased the battery bay size so it can fit an even wider range of batteries. The last modification was developing a camera holder for an AIO (all-in-one) camera vtx for FPV, making wiring much easier. Links to purchase parts used are below. The Electronics Tray is indexed with the end of the cutout for the center blunt section of the S800, use it as a guide to mark where foam needs to be removed for the battery tray. The battery is pushed pretty far forward because the weight of the tips and vertical stabilizers is located behind the CG. There's a hole to run a horizontal spar through the electronics tray if desired. The front edges of the battery bay may require trimming/sanding to match up cleanly with the airfoil, but they are much closer in shape than the V1 version. In the tray I stack up the 5v bec, ESC, and then XMR, and directly solder everything together. It's a tight fit, but it fits. The motor mount area must be cut from the wing. The motor mount can be attached with hot glue, Goop, or a cement adhesive, just make sure the thrust angle is in line with the airfoil and the cut is square to the center line. The camera mount is for an all-in-one style micro FPV camera and that's run off the balance plug of the lipo. The AIO camera/vtx from AKK has a built-in OSD, and when run off the balance plug of the lipo it will give you cell voltage which is very helpful for monitoring battery levels. Available here for only $17, it's an awesome camera. https://goo.gl/DktroP The other option is using the HS1177 mount with crash guards from the V1 design and putting the vtx in the wing bay. The winglets and center stabilizer fins were updated to be 3D printed. In the small cavity for the stock EPP winglets, I placed some LEDs to light up the semi-transparent PET printed winglets for some night flying. I might go back to the 4mm coroplast for the center stabilizers because it is much lighter. The https://www.thingiverse.com/thing:2156164 to cover the accessory bays. I opted to spar and laminate with 3-mill film and install balsa elevons. The molded EPP elevons would work fine, and I don't think laminate is required to get in the air. The CG is roughly 5" from the nose, or right on the main carbon spar through the middle of the plane. It's also very important that the wing is balanced left to right; if it's too heavy on one side, it can affect flight performance. Full Reptile S800 kit as reference from Banggood - https://goo.gl/mq5sj6 Full Reptile S800 kit as reference from Hobbyking- https://goo.gl/tEbhKT