us60
I have a US60 with a ST90 and it hovers very good and will torkroll if you rock the throttle enough...but it wont Lomcevek or waterfall...does pretty good flatspins but cant hold an inverted flatspin..I bolted the horizontal stab on so I could experiment with different elevator sizes and configurations...I think the reason it wont waterfall (flip over from hover) is that the HS area is so huge for one thing and the stab being on the bottom of the fuse is not in the propwash far enough...just my guess...when I get time I'm going to build a whole new HS and cantilever? elevator setup and try that...I added 1 1/2 in to the rudder to get better knife edge but slow KE takes alot of fighting it and is very wobbly...I have a u can do ordered from Tower when they come out.. might try the ST90 on it and if it has the power for 3D I will buy another one. keep us posted on your 3D efforts with the US60. I do like doing slow and low manuvers right over the deck.
Ron