fnp,

I'm not sure if I can answer your question....most of the stuff I build has lower Aspect Ratio, short body, and is powered so the size of the tail does not have to be real accurate (at least thats my experence)...another words I have never built a plane that I've really played with the size of the tail to see what effects it might have...nor have I had a plane that I felt had problems because of the tail size... I suspect that as you get in to longer bodies, lower speeds and higher Aspect Ratio a poor tail design is going to be more noticiable.... you might see the following post:

[link]http://www.rcuniverse.com/forum/Erratic_Flight_Behavior/m_1257875/tm.htm[/link]


Steve