RE: servos in the tail question
This is 3D glider MAD FOX made by JR.
I would call it the answer to 3D Kulbutin.
Wingspan: 74"
Length: 54"
Weight: 60 oz.
Airfoil: RITZ 1-30-10
Wing area: 615 sq.in.
Wing loading: 14 oz/sq.ft.
I have the "standard" alev. version NOT the full flying stab as shown in the pic