Well, I'm not an engineer but I worked at NASA Dryden for 11 years on model research projects. Besides, NASA isn't where all the best engineers are anymore. After all, the world runs on software!

Scott, I'm having a very hard time wrapping my head around your point. Are you trying to say we should be weighing an IC model with half of the fuel that it would use for a pattern? How in the world would you determine that? I'm sure I'm not grasping what you are trying to say.

Besides, as I said earlier, since an electric is losing power from the first turn of the prop, thereby having a steadily decreasing power-to-weight ratio, and IC is losing weight, thereby having a steadily increasing power-to-weight ratio, your graphs are misleading.

Boy, I know I should have taken those Excel classes when I could!