Where is your UCD CG?

4 and 7/8ths just like the book says. Want more. Started with 4 and 1/2 and during elevators it tip stalled terribly. Now, full up elevator and plane drops straight down while in horizontal attitude. No more tip stalling!

A comfortable 5/8" aft of suggested. Joe

5.5 "

Was at 6.25" with a ST 90 in the nose.
Now at 5.5" with a TT Pro 120 up front.

I liked the 6.25" CG better, but I'm not willing to add weight to the tail to get there again.

5.5 and 5.75

6 7/8

Two inches, impressive. Joe

It flies nice that way. It takes very little down to fly level inverted with the tank full, it climbs with the tank empty. It is, though very responsive without being twichy.