A guy "sequ" from sinodefenceforum made a very good guess about empty weight of MMU.
Forward fuselage: 1470kg
Mid body with wings: 2125kg
Aft fuselage: 3945kg
Horizontal stabs: 2x 235kg=470kg
Vertical stabs: unknown but for convenience sake we use the same weight as the horizontal stabilizers even though they are smaller=2x235kg=470kg?
Cockpit section: unknown but IMO 1000kg?
2x F110 engines and accessoires: 2x2000kg=4000kg
Landing gears, hydraulics and electronics= Estimated 2000kg?
Estimated empty weight TF-X= 15500kg +/- 10? = 34.000 libre
Let's try to guess MTOW (maximum takeoff weight)
Empty weight = 34.000 libre
Useful Load = 20.000 (İbrahim Sünnetçi sent a tweet about this which I can't find at the moment.)
Fuel Load = 20.000 (We use the same weight of useful load)
MTOW = 74.000 libre = 33.565 kg (With 9 ton fuel and 9 ton useful load)
Thrust/weight at MTOW = 60000 / 74000 = 0,81 (With F 110 engine)
Thrust/weight at Gross weight (%50 fuel + % 50 ammunition) = 60000 / 54000 = 1,11 (With F 110 engine)
Thrust/weight at MTOW = 70000 / 74000 = 0,94 (With national 35k engine)
Thrust/weight at Gross weight (%50 fuel + % 50 ammunition) = 70000 / 54000 = 1,29 (With national 35k engine)