I know some of you die hard jet fans don't consider a ducted fan worthy of flight, but I could never afford the real thing. I have found that RCM magazine sells plans to build your own, and I was really interested in the Lear 35A. It uses (2) .65 Dynamax fan units. Having no experience with DF's I was wondering if anyone knew of this kit, and what type of performance could be expected from a pair of .65 DFs? Any help would be greatly appreciated.