Comment by Allan Harley on January 25, 2011 at 11:09pm

is it me or has it got 4 counter rotating blades if so it will never fly

Comment by dan on January 26, 2011 at 2:11am

is has indeed 4 normally rotating blades, BUT 2 of them are at an angle (this is the whole reason why I did the delrin plastic motor mounts, so that I can easily change the angle) to compensate for the yaw spin...

Comment by Allan Harley on January 26, 2011 at 2:16am

ah i see sorry didnt realise that :)

Comment by TheGiantUfo on February 6, 2012 at 5:35pm

Hello my friend, any updates with micro framework based quad? as I am thinking to start with such project, but still checking the feasibility.

Comment by Ellison Chan on February 6, 2012 at 6:03pm

Dan check out my 3D printed Firefly Mark One frame.  You can angle the motors to your heart's desire.  The motor mounts are 3D printed too, and made for cheap 12mm Trex 450 tail booms.

Check out the blog.

Comment by dan on February 7, 2012 at 2:47am

@TheGiantUfo  sorry no news... I haven't actually touched this project for the last year or so... lol...:)

@Ellison Chan  Interesting. HOWEVER, funnily enough I received my first 3D model from Sheapeways less than 2 weeks ago and while the resolution is great, the plastic or whatever they use feels very delicate !

Also, the overall prices ends up quite high !!!

But I'm really on the edge of deciding if to buy or not a 3D printer myself, so it might be a great first thing to do...

Comment by Ellison Chan on February 7, 2012 at 7:06am

I print the hub with 2mm thickness. Trust me it's tough enough.  I crashed it enough times to attest to that.

The best thing about printing it in 3D, is no drilling, no cutting.  I reinforced it everywhere, by just copying a cross brace and pasting it there.. All parts are replaceable.  I used to build my own frames from scratch, but getting the holes on the hub drilled right on the hub is no easy business,  Off by one or two millimeters in the hub, and it translates to significant skewing at the motors.  For $73, you save a lot of work, for an Octo ready frame. 

I would not go back to drilling holes in hubs again.

Comment by dan on February 7, 2012 at 7:41am

Can I get your design and print it myself or do I need to pay for it on Shapeways ?

Comment by Ellison Chan on February 7, 2012 at 7:59am

Sure, you can get it at Shapeways here:

http://www.shapeways.com/model/448302/firefly_mark_one___trex_confi...

There's also one, that has a larger mounting plate, that'll fit AeroQuad, which uses a full sized Arduino Mega board for flight controllers.  Both mounting plates can mount APM1, APM2, and KK boards.

http://www.shapeways.com/model/451437/firefly_mark_one___trex_confi...

Comment by Ellison Chan on February 7, 2012 at 8:41am

Oh one thing, if you need an idea on the build process, I have a parts list and details in this blog:

http://diydrones.com/profiles/blogs/first-flight-of-3d-printed-fire...

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