I have four Saitos, a .56 in a Sig Rascal 40, a .65 in a 1/5 scale Sig Cub (built as an L-4B), a .72 in a Hangar 9 Cub (80 inch wing) on floats, and a .80 in a Sportsman Aviation UPF-7 WACO. Three of the four are inverted, run great. I'll never own any other glow engine, unless I get the flat four OS. I use 15% cool Power or 15% Sig 4-stroke, depending on availablity. Don't have any pics of the Cub on floats, not quite finished yet.