mikeytag wrote:

Would you really feel safe going inverted in a gravity fed fuel system? The
172 is probably not the best choice for this type of maneuver, although you
could probably pull it off if you rolled quick enough.

It isn't gravity that feeds the fuel, it is force caused by
acceleration. Gravity can be the source of acceleration, but it doesn't
have to be the source. In a loop, intertial force can be the source.
I've flown a loop in a 150 and its fuel system had no problem when
inverted at the top of the loop.


Matt