After flying chinesium (XMR250, Reptile X4R 220, Martian II) and frames from DemonRC I've decided to switch to completely different brand. My choice is Armattan Rooster, the newest freestyle frame from Armattan.
Rooster arrived few days ago, and this is what I can say about it before putting all the stuff into it:
sunken nuts you have to install by yourself are a very idea. It's hard to do without tools and skills. It would be much much better is they were preinstalled. Armattan, please, fix it!
additional pair of standoffs between plates would not hurt
it is tight inside and I will have to be creative to fit X4R and TBS Unify Pro in the back of the frame
frame itself looks good tho. I might even say it is pretty
It is done. It is alive. My 3D printed FPV racing drone works. A few weeks ago I finally flight tested my design and it works! Even better than expected, since I survived the experience without a scratch. OK, I did not crash it yet, but give me some time for that too….
And I have a cool name for it: Isando which means hammer in Zulu. Kind of fits, right?
My 3D printed racing drone is done. More or less. I was able to finish it a few weeks ago and even perform a maiden flight. It survived the experience, but I also discovered few problems I will have to solve before officially calling this project a success.
First of all, the decision about hard mounting a flight controller and not installing a capacitor on mains was a bad one. Not only motors are "twitching" from time to time, a video is very noisy. I hope big low ESR capacitor will solve that, since there is no way for soft mounting for this frame.
Besides that, it worked just fine. I will try to prepare a video from the maiden flight in a few day, for now only a few pictures and final specification:
Frame: PLA 3D Printed, 220mm motor-to-motor diagonal
Chinesium is amazing. Well, to be precise, not only chinesium manufacturers will do anything just to stand off a little. Just like this little (120mm) quadcopter frame called EXUAV Y120S. Why do I even bother to write about it? Simple: I love crazy designs. Just look at those pictures below:
I've been pretty busy last 2 weeks. Among other things, I've started to design 3D printed racing drone frame. I'm fully aware there are plenty designs available on Thingiverse, but almost all of them forgets that plastic filament is not carbon fiber laminate and what works well with carbon, will fail with filament. So, I came up with this:
suitable to 220x and 230x motors with 19x16mm hole spacing
fits PCB and 36x36mm flight controller (30.5mm hole spacing)
size: 220mm motor to motor (diagonal)
fits "standard size" FPV camera
It is heavy for sure. It has thick arms and a lot of M3 nuts and bolts connecting all the parts together. I hope it will be enough to survive at least some beating… First flight in a few weeks since I'm still waiting for motors.
So many things to do, so little time… I’ve purchased DemonRC NOX5 quadcopter frame more than a month ago, but had some time to take a look at it only today. This is not a cheap stuff. More than a $100 for a 5″ frame is few times more than I’ve used to pay. But I just had enough of cheap chinese frames. Don’t get me wrong, they usually fly alright, but both quality and user friendliness lacks a lot. With “premium” frame at least I’m sure that I’m getting a good quality carbon fiber and someone actually thought for a moment about “tiny” details a place for VTX transmitter or battery strap…
I have no idea how I was able to build drones before I've bought my 3D printer… I before I've learned basics of 3D design. So, today I present you upgraded version of my Runcam HD / Mobius camera mount I've designed few months ago.
After I finished my new Reptile X4R 220 racing mini-quad, I've realized, that there is no way I will be able to mount my RunCam HD on it. Comparing to ZMR250, 220 frame is just small. On a top plate there is enough room to fit battery, RC and FPV antennas and all what is left is around 35mm in the front. Plus, with angled FPV camera, there just no place for RunCam HD/Mobius form factor cameras. So, some time with 123D Design and few hours of printing, and here we are: 25 degrees mount for RunCam HD and Mobius camera specially designed for Reptile X4R 220 frame
This mount has 25 degrees inclination, will fit both RunCam HD and Mobius (not sure about RunCam HD2…) and its base is only 42x32mm. So it can be installed on small frames like 220. But, it will also fit bigger. No problems here.
The best way to install it on a frame is to use either zip ties or double sided velcro straps. There is a slot for 20mm wide velcro straps. To make it better, use 3M Dual Lock between.
To securely install camera also use 3M Dual Lock and use a velcro strap too. That should keep everything in place just fine.
Last week, first parts for my new racing quadcopter started to arrive. One of them, was carbon fiber frame: Reptile X4R 220. Why this one? Like I stated many times: I'm cheap. Plus, I did not wanted to go with another ZMR250 build. This frame was easily available, within budget and good looking. So, few weeks later, here we are…
4mm carbon fiber arms
2mm carbon fiber bottom plate
1.5mm top plate
35mm aluminium standoffs
adjustable camera mount (fits HS1117 and RunCam Swift)
integrated power distribution board (PDB) with 5V BEC
After 2 evenings with this frame, I'm almost finished with a build.
overall quality is good
everything fits, no need to ream holes, sand or cut anything
more nuts and bolts than required
top plate are rather thin. I would prefer 2mm top plate or maybe 2.5mm bottom plate too
power distribution board is an structural element of whole frame. If you want to use different PDB (I wanted to use Matek PDB-XT60) you might have a problem. Some improvisation will be required
In theory, each arm is kept in place by 3 M3 bolts. In theory… In practice, one of those bolts enters nylon standoff. Not metal nut, but nylon. So, instead of 3 bolts per arm, it is only 2.5 bolts or even less… too bad… Still, whole build is rigid enough…
Hey, don't leave yet, there is more!
Do you know that there is a YouTube channel with awesome, drone and FPV related video? Why don't you give it a try?