Hello everyone,
I have a pattern-like airplane - Javelin-90 that is a 66" wingspan, 67" fuse and got a Saito 125 in the front.
Now i am trying to do the inverted flatspin ( heard that planes like this better than upright ), and need some help.
Here is how i am attempting this .
1. I take the plane high up as much as i can, and invert it, then reduce throttle and keep increasing the down elevator, till the plane stalls.
2. At the stall break, i give FULL Down elevator and FULL Left rudder. Plane gets into a tail spin
3 Then i give opposite aileron ( sticks on the same side as rudder ) , and add throttle,

However the plane does not really flat spin , and the nose is always pointed down, and comes rapidly towards ground in a tailspin kind of manoever.

The CG is quite aft, as i can do KE without any elevator inputs.
I tried giving more throttle but that did not really help, the plane instead came towards the ground faster.
I also tried giving more opposite aileron, though it tried to flatten the plane, it did not really perform a good flatspin.

Elev. throw is at the max on the servo arm/control horn. This is around 20-30 degrees. Servos are Hitec Digitals . Twin on Elevator.
Elevator is more than 50% of the stab, and so quite big.

Please help me learn this manoever.
Thanks !
-Gaurav