I am a few weeks ahead of you. I have made the Twirl, a foam autogyro, and it flies really well. There are alot of sites about the Twirl, just Google 'Twirl autogyro' , also put 'Twirl autogyro' in a Youtube search. I had no problems flying mine, however there were a couple of areas I have strengthened on the Twirl from necessity (i.e. they broke) notablty the engine mount as per the plan was not strong enough and the motor came off and went through the blades. 4 blades were chopped up but the Twirl fluttered to the ground undamaged. The blades were easy to replace. The wing strut mount as per the plan was not strong enough and the mount pulled the foam it was attached to away. Again easy to fix. The Twirl would not fly without the wing strut attached as the rotors bent the wing down instead of lifting the autogyro. When you make the blades I suggest you make 16 blades instead of the 8 required, to have spare blades on hand to speed up repairs. The photocopier / printer paper blade reinforcement of the blades sound wierd, but seems to work fine, with no blades failing while flying, all 6 blades I have broken have been through mishaps, learning to land and so on rather than blade structural failure.

The big pluses of the Twirl in my eyes are is it is easy to fly, but it is an auto gyro and flies and behaves as such. It also teaches you to keep autogyros reasonably close as with no or very small wings it is VERY easy to become disorientated. In other blogsI have read that it is essentail to build an autogyro as per the plans so rotor angles and so are correct.

I am so inpressed with the Twirl that I have ordered a single rotor autogyro profile kit, autogyros are most interesting planes to fly.

Plans, discussion and so on:

<a href="http://www.rcgroups.com/forums/showthread.php?t=450021">http://www.rcgroups.com/forums/showthread.php?t=450021

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