to answer citatioN10, im using a 4 oz tank, as my 2oz tank on my thunder tigre 15 ran for 10-12 mins so i figure this tank will be equal. as i stated above ive heard that the static thrust on these engines is up near 1.3-1.4kg?? could be wrong, but that would be almost 2:1 ratio on a 800gram plane, so i figure hovering would be possible, this is my first small fourstroke and have no idea of its power capacity so once i get the maiden flight done near the end of the week i can report back to what the flying characteristics are, maybe not 3d wise as i dont want to stress a new motor out untill its broken in