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WilliamTLear
Guest
Originally posted by Kenpo Yahoo
Unless you are striking perpendicular to your opponents path of action, you will have some component of their force moving in your direction. For instance most of the replies have said to step to 7:30 because it will take you off the line of attack (at least for a front kick).
Quick mechanics lesson: Use the standard clock as a reference. You are standing in the center of the clock. Your attacker throws a kick that will travel from the 12:00 mark to the 6:00 mark. For arguments sake, you step to 7:30. By doing so you've changed your angle by 45 degrees (every 30 minutes=15 degrees). Let's work with some numbers to make this a little easier to understand. Let's say that your opponent kicks at you with a force of 100 (we'll stay unitless for simplicity). This means that you will only encounter the amount of force directed 45 degrees off of his line of attack or 100 cosine (45), which equals about 70. So that means that your 100 will meet his 70 at the point of impact making an impact of 170. If 200 was the maximum amount you could collide with or 100% of the possible collision then 170 is equal to 85% of the maximum possible force achieved from the collision.
This means that even if you were to deviate to 7:30 and maintain your 7:30 to 1:30 line of attack, you would still hit with 85% of the total possible force. However, if you were to adopt a slightly different path of attack, for instance 1:00, you would increase your percentage from 85% to 93.3 %. Couple this with the fact that you've decreased your attackers ability to smack ya', and you've got a pretty sweet trade-off. A lot of safety for a little bit of power. Pretty good deal if you ask me.
This also doesn't take into account the fact that you driving a weapon through a curvilinear path of action (i.e. you will use your hips to create torque for the elbow strike), creating even more force. Or even the fact that the attacker is so over-committed with their kick that your block causes them to fall into you with the back of their head (I've seen, and had this happen to and for me).
Hopefully this makes sense. I really do love this technique, it's simple yet effective.
The curvilinear path of action used by the elbow is very important to note here because of the angle of entry it utilizes at it's point of impact. In other words... If I were throwing a linear punch after deflecting the kick I would want to be comming from 6:00, but since I am using a curvilinear path of action with the elbow... the force of the elbow strike is maximized from 7:30. Thanks for the discussion.