Flydenfeld

The situation with the full scale pilot spinning into the ground is exactly what I described a few posts back. I DON'T CARE WHETHER IT IS A FULL-SCALE OR A MODEL AIRPLANE THE SAME RULES APPLY REGARDLESS! People with full scale airplanes that put a bigger engine on them use to put their batteries in the tail of their airplanes to balance them out. We do exactly the same thing in our model airplanes, RIGHT? Yaw coupling, which is basically a derivation of a moment of inertia is what kills people. Think about it, when you get an airplane spinning, you're getting a weight spinning in the tail of your aiplane. If your airplane does not have enough rudder to break this moment of inertia, you are SCREWED. This is the way things work Lanterman. I have seen full scale pilots die from this. Yes it does depend on the length of your fuselage. The longer the fuselage the more rudder authority needed. The shorter the fuselage the less. Granted, the number of rotations per minute can also play a key role in the moment of inertia as well. All I am saying, is that if a 18-20 lb battery in a 1500 lb airplane makes a difference like what I have described above, think about what your 1/4 lb battery is doing in your 6lb airplane.

Dan Payne
Chattanooga, TN