RE: dipheral??????????????
Erm, I think he misspelled dihedral - don't you?
Dihedral is not your enemy!!!
I love it when a new person comes to the field to learn to fly. All of those fellows that just learned how to fly well enough to solo greet the new guy and begin to download all of their new found knowledge into the poor fellow's brain. A good bit of which is wrong from the git-go. Fortunately, said newbie won't remember much of what he was told. The dihedral thing is one of the first things the newbie will hear. Unfortunately, that one usually sticks. So, model number two arrives at the field with no or negative dihedral as a result. The new modeler's enjoyment of the hobby usually takes a dip at this point. After all, he's been flying long enough to have an airplane he HE/SHE modified from stock, with his newly gained superior knowledge. Many folks continue making this same mistake (altering the stock proscribed dihedral) for the rest of their modelling careers and never flying a really good flying model.
I have had newbies approach me after seeing my model's dihedral and telling me that a flight instructor would be along shortly. (smile)
Ed Cregger