I shared this on DIY Drones Earlier this morning figured I should share the concept here as well. if you want the Full version head over to DIY Dones: http://diydrones.com/profiles/blogs/field-strippable-300-sized-multirotor-concept-relase-stl-files
The Problem And The Solution
In MultiRotor FPV to get really good, you have to crash, and crash A LOT. Which can be demoralizing to some, specifically to those of us who do not have personal mechanics. So I started thinking. I analyzed F1 racing, its amazing that the world record pit stop is said to be 1.923 Seconds. Why can’t FPV crashes or mechanical malfunctions take equality as long? So then I started looking into mil-spec devices, specifically the M4 or “AR-15”. Two Pins hold the main assembly together, very interesting. And its amazingly helpful for the men and women deployed over seas, they don’t not have to be rummaging for sub tools to clean the “tool of the trade”. Now my mind is really thinking. Six revisions later, and over 500 test flights. I present the Ozone Drones 300 sized X-8 Pro and Quad-X Racer field strippable modular frame design.
Youtube Assembly video:
Test Flight Video One:
Test Flight Video Two:
Important Specs and info
I printed the frame out of PLA, two walls thick, with a 30% infill on my MakerGear M2. And as you can see in the video it flies very solid for using little to no hardware. Altho the spacers seem to be useless in the Quad-X frame, they play a crucial roll in the X-8 frame. Spacers on the X-8 frame should be crazy glued back to back, to help score some rigidity. Keep In mind for the X-8 you may need at least 60C discharge rate packs. To avoid cell damage and puffing. Eight motors pulling peaks of 15-18 amps at 12 volts, (3s) boils down to 1500-1700watt peaks. Amps sure do add up. Now you have a 300 size that peaks out at 1.7kw.
Motors Used: Emax 2300kv
Props: 5x6 carbon fiber
ESC: Emax 12amp
Pack: 3s 1400mah or 2200mah
Controller: CC3D, NAZE32, or APM Mini(with my personal favorite 8bit microcontroller)
Frame Weight:185 grams
X-8 Frame Weight: 270 grams
Quad-X Weight With 1400mah pack: ~1.5lbs
X-8 Weight with 2200mah pack: ~2.25lbs
Need a bag of: Hitch Pin Clips 3/16 1”
Cons (Need to be Solved)
- Mild Boom wobble
- Not made of Carbon Fiber
- A little Heavy(slowly getting stronger and lighter though)
- Currently can’t be purchased
- Requires further development
- Development account unfortunately seized by Mass.Gov
Pros
- Less then five minute frame assembly (F1 Inspired)
- Easy to repair
- No tools required for air frame assembly (AR-15 Inspired)
- Use of Hitch Pin Clips is the only hardware required for frame assembly
- Modular Design (Lego Inspired)
- Designed with Lean Manufacturing methods in mind
If any one has any ideas on how I can improve the frame, please let me know. I need a solution to solve the mild boom wobble which gets progressively worse as you fly it, specially after mild crashes. Having more eyes on the subject may help accelerate development. The X-8 still has to be test flown, and due to my misfortune, I will be forced to pause development of this system till I accumulate some funding. I will be patiently awaiting constructive criticism.
Download link : www.ozonedrones.com/downloads
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This is awesome Andrew! Amazing job 
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I know that this is a bit delayed, but congratulations on getting into Make Magazine!
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It was published Make volume 51, and they even attached a link to you DIYDrones page! You can see it here: http://makezine.com/go/field-strippable-quad. I attached some quick photos of the issue for you. Enjoy!
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Thank You so much for the share! this is very exciting! I can’t believe I am just seeing this now, I guess i have just been to busy working on so many projects. I have a couple huge projects to share with Open-source community over the coming months. Like a DIY augmented reality HMD which is next up for release.
Thank you! They contacted me, but never told me which volume they where writing for so i sadly have yet to see the write up. Do you happen to remember which volume it was? It be awesome to see it for myself.
Well, let me know when some of those projects are ready for the world
