Large aircraft are for people with slow reactions and/or failing eyesight or for people who can't build light. [8D]

Well I am joking, I hope you all understand that.

IMHO, large aircraft are easier to control because in general they react slower to control inputs than small aircraft do. Also relative to their size, they fly slower than small aircraft. Because large aircraft have more inertia, they are less easily disturbed by turbulence. If building scale aircraft one can add a lot more scale detail without significantly affecting flying performance due to the increased weight.

That being said, after flying many different types of aircraft of different sizes over the years (1/2A to giant scale) I have come to the conclusion that for me, aircraft larger than say 80" have very little to offer in terms of increased performance or flying qualities. For most part I prefer aircraft smaller than that, say around 55-72 in. wingspan.

As long as we are not talking competetive flying (aerobatics etc.) where the best route is to fly the same size aircraft as everybody else do, I see many advantages to smaller aircraft (in the size range mentioned above):
[ul][*] They can handle any weather situation larger aircraft are capable of handling. In my experience people flying large aircraft have a lower tolerance to bad weather conditions than people flying smaller aircraft. I do not thing this is due to the flying qualities of the aircraft, but rather due to the fact that the larger aircraft in general represents a bigger economic investment. [*] They can fly any aerobatic schedule the larger aircraft can do, if the pilot is up to it. The one possible exeption may be gyroscopic maneuvers such as Lomcevaks, where large diameter, high inertia propellers is a definite advantage.[*] They require rather inexpensive radio equipment, standard servos are sufficient and there is no need for power-boxes etcetera. The same goes for most of the other equipment such as propellers and control linkage. [*] Because of the lower inertia smaller incidents, e.g., hard landings, that may cause serios damage to large aircraft often only result in minor damage to smaller aircraft. [*] Obviously, smaller models are easier to transport and store.
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Of course, there are some negatives as well:
[ul][*] In most parts of the world methanol based fuels are more expensive than gas. This may become a non-issue when as more and more small gas engines becomes availabe, e.g.. the Saito FG series.[*] Small models does not attract as much attention as large one do.
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