My new Seamaster 40 is about to go up tomorrow for the first time ....finally. Whats the best way to determine how long I can go on fuel? It has a .60 ASP four stroke. stock size gas tank. High altitude and run it out? How should I do this so I have a benchmark for my air time. Thanks.

fill it up put it on a test stand and run it full throttle while timing if it lasts 10 min at full throttle then you know it will last at least that at variable throttle.