krokodyl- I have an LT 40, pretty much same as urs W/ OS46FX, and i like to fly for longer periods of time than most of my other flying buddies. I have a 16oz fuel tank in mine, and will fly for 40-45 min, usually just cruising at 1/4- 1/3 throttle. I can do a bunch of loops and rolls, and still have a few oz of fuel when i land, so ur flight times, much like mine, are about right on. Dean