Comment by Noth666 on February 26, 2009 at 3:53am

Very interesting idea! I would extend the motor arms to work as bumpers for the props tho.
But what kind of control were you thinking of using?

Comment by M1D4P5 on February 26, 2009 at 7:56am

Very cool! Very good work man. Wanna a help with the project? You must pay attention that the upper rotors in X6 are different the bottoms ... take a look more carefully later. There are some more secrets embedded in the X6. ;)

Comment by Jose Luis Cortes on February 26, 2009 at 8:40am

Hi Noth666,
i will use my board (http://diydrones.com/profiles/blogs/705844:BlogPost:46953) and my software, we have a simple AHRS based on complementary filtering than works great!

Hi M1D4P5,
yes, i have seen rotors are a bit diferent in X6: Upper Rotor Diameter: 40cm (16in) and Lower Rotor Diameter: 38cm (15in), they are very big diameter propellers!
Please, i need this secrets!

Comment by Yury on February 26, 2009 at 11:12am

In what program did you draw these? Looks really nice...

Comment by Ivan Popovic on February 26, 2009 at 11:40am

What is max weight, power etc for motors you were hoping for?

Comment by Jose Luis Cortes on February 26, 2009 at 12:12pm

Hi Yury, It is Solidworks 2008

Hi Ivan, Specifications will be similar to Draganfly X6.

Comment by M1D4P5 on February 26, 2009 at 12:22pm

Mr. Ivan, with base in the image above probably he'll use a AXi-GOLD Motors 2208 or something like that. So, max thrust around 6*550g ~ 3300g , right Jose? With battery, electronic, structure.... I supposed that the payload will be around 1800g to use 70% of full thrust, am I right José?

Comment by Jose Luis Cortes on February 26, 2009 at 12:42pm

Hi M1D4P5,

yes, 2208 is the first choice, but it works great with 10x4.5 propellers, i don´t know how it works with 12" propellers.
I have not enought previous experience with quadrotors so i can't estimate payload, but 1800g seems too much for me. perhaps it is possible but not recommended in order to get reasonable flight time.

Comment by M1D4P5 on February 26, 2009 at 1:02pm

Yeah! I have 2 quad :D The project that I made, but didn't build, have this caracteristics above but with only 4 motors. My quad's payload is about 900g because it's very heavy and not optimizated. This idea to build a aluminium struct is very good, lightweight and easy to build. Go ahead.

You said: "I have not enought previous experience with quadrotors so i can't estimate payload, but 1800g seems too much for me. perhaps it is possible but not recommended in order to get reasonable flight time."
For sure it is! It's my first approach (30% of error). If you'd like to use this motor configuration, like X6, you have to estimate your payload for 3 motors, because you need to garantee the redundancy of the system.

Good luck! If you need some help send me a message.
midaps

Comment by Thomas Bögel on February 26, 2009 at 3:18pm

On a quad, you can get up to 2200g with stock parts, but then you would end up with 10-12min of flying time only. I did that with one of my first quads, using AXI 2217/16 and APC SF 12x6" props.
<---- not this one.

The problem is to get usable props. There are not many to be had that come in conter rotating pairs, are large enough and also stiff enough.

Above 1300g - especially with expensive cameras mounted - I would consider 8 props (but not coax - it makes things a lot more complicated). In fact, I am working on an octo, using the ArmoKopter board.

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