Propellers for autonomous flying robot

Does anyone know where I can find clockwise and counter-clockwise propellers for an autonomous flying robot modeled loosely after
the Draganflyer at http://www.rctoys.com/ ?
I have Gordon McComb's "Robot Builder's Sourcebook", which is excellent... thanks, Gordon! ...but I couldn't find any source for propellers that spin clockwise and matching ones that spin counter-clockwise.
Any pointers would be greatly appreciated! Thanks!
-- Glenn Lewis
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You can find regular airplane props all over, though they might be a bit heavy for your application. Indoor and slow-flight props might work. They do make props that spin the other direction, but they aren't as common: if you want to run a pusher configuration, you can turn the prop over and run the motor the other way. But maybe with some of the terminology here, you'll be able to find something.
To be honest, you might as well make your own. The Draganflyer props look like they are light foam or plastic which has been heat-formed. You can do the same pretty easily. Or, I notice that you can buy replacement props on the actual Draganflyer site, for about $30 a set.
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www.airdyn.com http://www.airdyn.com/roswell/parts.htm Pick up some carbon fiber tubing while your're there.
definately worth it.
Try www.gwsexpert.com for GWS IPS motors. Try the IPS-DX-CXC
Mike

do
you
be
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Good find.
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The Electric Airplane discussion group at www.rcgroups.com has had many discussions about making your own props. Some are as simple as cutting them from a plastic yogurt cup which is sometimes used on the micro-electrics.
The electric micro-electric helicopter area might also be of interest to you.
Joe
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The Hirobo XRB has counter rotatin blades of opposite pitch. They are relitively cheap at www.helihobby.com , but the roswell flyer blades at www.airdyn.com provided much more lift for me.
Mike

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