''Gaining Momentum''
Usually we gain momentum to break or make fractures by the following ;
1) Getting away from the oppent in certain distance ( Raise arm , Contract sholder for ex)
2) Some times relax knee, Ankle
3) Rotating Use grabs To support(Boost) Your kick/ Punch
4) Long Ex;
4 ex:when you grabbing with your left arm, Raise it and contract your Shoulder then..
Extend The shoulder, Lowride arm or Contract elbow, Depends on your position.
And then Mostly Relax ankle/knee(Not that needed sometimes) Then Extend it.
Play Taekkyon or Erthtkv2 to Provide your Momentum tests,
Pm me and i will Come to help you,sir.
Just to know: THE MOMENTUM IS GAINED BY POSITIONS.
So you have to choose your movements to your positions.