Kraken Mk2 RC brushless hovercraft

thingiverse

Hope you'll have a blast with this sexy little hovercraft I designed on my Surface Pro during lunch hours at work. I'm not an engineer or designer, so feel free to modify it as you see fit. I plan to test it in wide open spaces when I get the chance, but based on my limited testing, I think it's going to fly at pretty impressive speeds. To build this hovercraft, you'll need: - 3 ESCs with a 5V BEC or 3 ESCs without a BEC and a PDB that can provide a 5V source for your receiver. I'm using three old Turnigy Plush 30A ESCs in mine. - 3 brushless 2205 motors (high Kv motors are recommended). I'm using DYS 2205/2750Kv motors, as torque isn't as important as RPM with the impellers - please note that you may need to modify the impeller wheels to fit your motor height and shaft. - One 5-inch 3-blade quadcopter propeller - A 1500mAh 4S lipo pack (a 3S battery will also work) - A radio and receiver (I'm using a Spektrum DX9 Air transmitter and receiver, but any surface radio with four channels will do) - At least 30 M2 x 8mm self-tapping screws for the skirt retaining rings - Six M2 x 8mm button head screws for the rudders - At least ten M3 x 12mm button or socket head screws for the impeller mounts and thrust duct assemblies - One 9g servo (I'm using an EMAX 9g ES08A Mini Servo). You can cut the servo hole to fit any servo you want. - A tie rod for the rudders - Rip-proof nylon fabric with a waterproof coating (you'll need at least one meter long and 15cm wide) - Silicon wires to extend your motor wiring and servo wiring - An XT60 connector to hook up your PDB or ESCs to your battery I'm also using an RC tire truer to drill holes for routing wiring based on the available lengths of your electronics wiring. You'll need a soldering iron and rosin soldering wire. I've placed my receiver and PDB in the front compartment, with a conduit leading to the battery and ESC compartment in the back (as seen in one of the pictures). There's also space on both sides of the battery compartment to tuck in your ESCs. There are many ways to synchronize both impellers - you can either join both impeller ESCs to receive signal from one channel or program a mix to get both ESCs to perform in any specific way you desire. This craft will ride on any terrain, including grass, asphalt, water, and snow. I recommend sealing holes with silicon where you'll route wiring underneath the front hull to avoid water or moisture creeping into the battery and electronics enclosures. I've also added a small desiccant pouch in both compartments in case moisture finds its way in. This is an evolution of my previous design found here: https://www.thingiverse.com/thing:2765766 It was inspired by Ivan Miranda's superb hovercraft project on YouTube: https://youtu.be/B8zCXcgk5TM Here's a clip of a short run I made from my garage door - I'll use it in open space this weekend. This thing was made with Tinkercad. Edit it online at https://www.tinkercad.com/things/b98hLVTinyu Please post your build pictures and modify it as you see fit - this design can certainly be improved, but it's a friggin' cool little thing to play with as is. Enjoy!