I went to the web page ...autogyro.com about 2 years ago. I studied the stuff that is there.
I scratch built ie. no plans from the numbers presented. Ta Da, it worked very well. 1st machine was a "stick" literally for the prototype. dimensions etc. Flew very well first flight. Second machine awhile later about a year, based on those understandings.. took on a new look with the same numbers. Flew even better, and as many have said" it could be seen in flight". These are electric powered Gyros. 3 pounds and 60 inch rotor with single axis DG(that be left or right). Flew the later at the NEAT fair in NY in Sept.
NO bad tendencies and a Blast to fly. Zero wind or alot they do just fine. and No Grease. Do some homework and enjoy the simplicity of a new way to fly RC. Enjoy. www.fayetteflyers.com