It started when during a boring afternoon at work I told my colleague that I found a very interesting web site called DIYDRONES. We realized that our aptitudes and knowledge were complimentary meaning that he understood what I was talking about and I was also understanding him when he was telling me about how to integrate (something) into a closed loop after having characterized (something) to determine (something else). WOW!

My friend is a senior aerospace engineer at the aircraft certification division of Transport Canada and I am an aircraft maintenance engineer working also for Transport Canada as a civil aviation safety inspector.

That day, I challenged him into a project and he said with a smile; I hate you !

Since then, according to our wives, we are crazier then ever. We are now obsessed into accumulating enough honey-do list points to buy free time to go forward with our project.

I posted here a few pictures to tease your curiosity. If you want to play with me until the end you will get the complete story and details about what we created. All because of what DIYDRONES put in our heads.

We are planning to give most of it to the open sources community.
For me it started by looking and drawing on an autocad 2009 computer screen. Did I mentioned also self learning how to use autocad?

One of my neighbor, also a friend, bought from China, on Ebay, a $1500.00 CNC machine knowing that I would learn how to use it and then teach him. Sure... but before I had to put together a computer powerful enough from some of the junk found in my garage. Could not wait to find a case for it.

After going through a few online tutorials (or was it a lot?) about Mach 3 CNC software, Sheetcam CAM software, stepper motors and controllers, etc. I ended up with my case less computer showing this screen;

and a noisy set up doing that; At least that is what my neighbors complains at 3 o'clock in the morning, you know ! CNC, router and vacuum noises.

Realizing that honey-do points are very hard to accumulate, we decided to start with cheap and easily available trex rc helicopter parts and built around it. Also we had the wisdom to start with a mock-up made with acrylic instead of wasting some very exotic and expensive material like carbon fiber. I think they call that the learning curve.

But what is that gizmo?

The continuation of our story will be by acclamation from you guys or it will die with this post...

Are you curious? Did DIYDRONES made you crazier to? Maybe we should consider a class action for it to stop...



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  • It looks like the Germman counter-rotating flying disk. Sort of trw multibladed rotors trapped between two disks.
  • Everybody is waiting post 2 please!
  • LOL :)
  • a giant coaxial variable pitch uav? lol i dunno.

    you've got me, i have no idea. it does kindof seem like the disks will be rotating which i find strange, but i can't wait to see part 2!
  • duplicate...sorry

  • OK. one last set of pics before part 2.

  • I can't take it anymore post more now, pretty please!
  • If you mesh 4 gears like that you get 2 clockwise and 2 anti-clockwise drives while the drive motors both spin in the same direction.
  • Developer
    Zak, yep i think so too.. they all rotate on same direction. Ok you can change rotation by rotating belt 180° in tube just like we are doing on traditional helis. You need to twist it 90° anyway but which direction that's the question
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