I took my Evolution .46 off my trainer and put it on my Tower Hobbies Voyager which is set up for a inverted engine and it seem to do alright, no loading up etc but I never did fly it just taxi around the yard to see what it would do. Carb inlet was around 1" lower than that of the tank this was using a quick fueler hook in. Some engine will run inverted and some have problems only way to know is to try it and see.