I just picked up the latest version of RCM&E. (British mag) There is a neat free plan this month for a .25-.35 sized autogyro.

It doesn't look too difficult to build and shows the config for both a twin or a single autogyro.

I have a .35 just sitting there .... hmmm

Anyway, just FYI as it's an inexpensive way to try this facet of the hobby.

Bob