Is there a listing somewhere of the number of 20b engines flying or in
project status?

I am considering putting one on my Cozy.  I'm back and forth between
that and a Renesis with a blower.

Rick Irwin

Al Gietzen is flying
http://members.cox.net/alg3/airplane.htm
Tom Parkes was flying his turbo 3 rotor.
Several others have flown.
Tracy Crook should be near to flying.
That is about all I know about right off the top of my head.
Check out Dave Leonards site.
http://members.aol.com/_ht_a/rotaryroster/index.html