Thank You!! Very much. More Weight is an obvious issue with Details and assorted Mods.... The first trick is to keep the details LIGHT.
Another thing I want to deal with, is Tail Moment... that on some of these designs, is a bit too short for my more mellow Flying Style (not that I'll NEVER do Aerobatics, just not all the time!)
The key point to remember is that the distance between the wing and the Tail area, also known as the "Tail Moment" has a major effect on the sensitivity of your elevator (pitch) axis.
The shorter your Tail Moment, the more sensitive your Elevator will be. Conversely, the longer your Tail Moment, the less sensitive your Elevator will be.
Too short a Tail Moment can easily produce an unflyable Model regardless of Elevator input.
One of the key aspects of design is to keep your model's extremities as light as possible without compromising strength. The lighter the Rear Fuselage, Tailplane and Fin, the shorter Nose length you require to get an acceptable CG position (typically 25% to 40% of Mean Aerodynamic Chord from the Leading Edge of the Wing).
It's all a tightrope balancing thing - the lighter the extremities - front to back or side to side, the more stable the Model becomes overall.
Most of the heavy stresses are concentrated on the central part of the Wing and fall off rapidly as you move out the Wing Tips. This is why it is a good thing to beef up the center of the Wing (where most of the Flight and Landing stresses are concentrated) and taper your structure for lightness as you move outwards.
Likewise every 1/2 ounce of unnecessary Tail Weight might require an ounce or much more of Nose Weight to compensate. Balance both ends of the Fuse. (Weight X distance of Rear Weight = Weight X distance of Nose weight) - and the Tail length is much longer than the Nose length. Keep everything in the Tail Section as light as possible! Balancing the CG at the correct spot, is more important than ANYTHING else in Aircraft Design.
That's PART of the "Maths" that I'm preparing to apply to this!!
