Newbie looking for parts / info (for flying robot)

Hi all,
I'm working on a flying robot project and am having some trouble looking for parts, and even more general online resources for robotics info.
Hence, I was thankful to find this group.
The robot I'm designing will use a gimbal / thrust vectoring system, so I need to design large gears, etc... as well as unite them with motors that have specific ratios, torque, etc ...
Similarly, I need to build a lightweight airframe, so carbon fiber parts and fabrics are important.
Any info you have or that can point me in the right direction would be appreciated.
Thanks,
Dave Topper
--
Technical Director - Virginia Center for Computer Music
http://www.virginia.edu/music/vccm.html
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David Topper wrote:

Have a look at this before you build a standard chopper.
http://www.seattlerobotics.org/encoder/200311/weimer/bxflyer.html
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Hi!
Very cool. Yes, this is along the same lines. But I have some different ideas. Where can I find parts to build things like this?
DT
agamlen wrote:

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Technical Director - Virginia Center for Computer Music
http://www.virginia.edu/music/vccm.html
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Hobby-lobby.com seems to have plenty of lightweight, cheap gear reduction drives - in the range of like $25 each, some with individually replaceable prop blades. On that web site full of $5000 versions of those 4-motor choppers, they appear to use gear drives on the (relatively) cheap ones and timing belts on the expensive ones. I don't see why one of the...like... speed 280 size motors couldn't be driven by a single MOSFET PWM drive straight out of a PIC or stamp. Digikey sells a 3-axis accelerometer chip on a board with drivers, filters and amps for $50 - its a little over an inch square. They have gyros too, but I didn't look in to details. I imagine they have tilt sensors as well, but I didn't have too much time to look around. If I were to do it (which it looks fun - maybe I will!) I would make a computer stabilized radio control version before I went fully automatic.
Andy

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Andy Baker wrote:

They only appear to carry traditional choppers. Which 4-motor choppers are you referring to?
I don't see why one of the...like...

If the accelerometer can measure static accelerations, then it can double as a tilt sensor. This excludes MSI sensors (which is the piece you refer to) yet includes AD sensors. An example is an inertial measurement kit sold by Rotomotion (http://rotomotion.com/prd_REV2.4.6DOFK.html ). It's more expensive, but it's capable of measuring 3 degrees of both linear and rotational acceleration, as well as tilt sensing.
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They (hobby lobby) don't sell 4-rotor choppers, but they sell motors, gear reductions and prop packages that seem like they would serve the purpose for somebody wanting to build their own. The site that sells the $5000 ones is http://www.rctoys.com/draganflyerxpro.php - This one has timing belt driven blades.
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