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03. Clearing Kimono (L. lapel grab).

8/5/2011

1 Comment

 
Our opponent grabs our shirt/jacket with their left hand.  By itself, this is not much of a threat but is typically a "distance gauging" and positional guarantee for their right punch or perhaps knee strike.  Thus our goal is not simply to clear their hand from the grab but more significantly reduce their options of succeeding with an actual strike.  This technique works well preemptively (as they reaching to grab us) or reactively (after the grab has been accomplished).  It does not work well after they have already succeeding in punching us in the face while holding us! 

Controlling Animal Strategy: Their grab (snake strategy) is cleared through our crane (wing folding and re-extending is our clear and then immediate strike.  Our target choice (hand sword to throat) has a viper snake influence as well.  Because you can counter an animal strategy with either the controlling animal or its own animal (crane beats snake but also viper snake can counter constrictor snake) it is quite common to see an influence from both the controlling animal and the same animal within a single technique.  

Lesson 1: Affectng all three zones of movement: Height, width, and depth.  We clear their grab with our right arm moving in an inside downward diagonal path as if drawing a line from their left ear to our back leg (left toe).  By moving diagonally we transverse height, width, and depth zones.  The downward aspect affects height (causing them to bend over slightly which places weight over their feet reducing immediate access to kicking.)  The inward component of our clear affects their width which turns their body and limited their ability to launch with power a right punch. Because the clearing path travels towards us it draws their body in to us which affects their depth by accelerating their next target (throat) towards us and limits their ability to retreat out of range.

Lesson 2: Frictional pull.  There are three ways of increasing the amount of pulling on our opponent that our clearing hand causes (frictional pull).  First, making the initial contact on the higher part of our forearm (closer to our elbow) on the higher part of their forearm allows a longer duration of contact while traveling the inside downward diagonal path.  If we contact them at the right place on their arm but with the bottom of our forearm then we lack leverage at the beginning of the action because we are jammed up (operating within the a rim of your natural leverage is preferred).  If we contact them at the bottom of their forearm we at best will clear them but certainly will not draw them in much.  Having the correct leverage and a longer duration of contact is what we are seeking.  Second, we want our forearm to rotate (clockwise) from a palm partially facing down position to a palm up position by the completion of the clear.  This rotation will increase the contact (friction) and provide rotational directional vectors to reel our opponent into us (and down).  The third component is a principle of its own right, marriage of gravity, which is power generated and transferred into our movement by properly timing the benefit of dropping our center of gravity. The added "weight" to our arm through this principle also adds to the frictional pull.   

Lesson 3: Rebounding.  After clearing their arm we conserve our momentum by rebounding (bouncing off our abs) to reverse direction quickly as we deliver the right outward handsword to their throat.  This rebounding makes the movement faster (no stopping, restarting), more powerful (we arrive at the target with greater actual velocity and force = mass x velocity squared), and energetically more efficient (we used left muscular effort because we did not have to contract muscles to stop the arm and then reengage those muscles to reaccelerate the arm.)

Lesson 4: Borrowed Force.  If our clear is done properly so that their body is falling towards us; and if our handsword  is applied correctly so that by rebounding it arrives soon enough to the throat to take advantage of their motion that is still coming towards us; then we benefit from borrowed force which simply means that the impact is greater because of kinetic energy of their target that is running into our weapon.  Like two cars at 30 mph each having a head on collision that is now the equivalent of a 60 mph crash we allow our handsword and their throat to have a heads on collision.  

NOTE:  The above is a good example of "the whole being greater than the sum of the parts."  The magic in quality martial arts is often when several seemingly small details are done correctly which collectively work together to bring out a dramatic result.  All too often (in all martial arts) a method is discounted because somebody is missing or is misapplying a key small ingredient that links and binds all the preceding principles and thus negates much of the end result.  They then dismiss the movement.  Although any technique of any style can always be "improved upon", you can probably assume that if simply does not seem to work at all for you it is because there is a big piece of the puzzle you are missing.

METHODS OF DRILL:

1.  This technique should be practiced preemptively and reactively and like all techniques on both the right side and the left side.

2. Diversify the attacks while still applying this same sequence.  A two hand lapel grab, a straight punch, an outward back knuckle, a two hand or single hand push are just some of the attacks that this technique (especially in the preemptive clearing method) work well against with no modification.

3.  Isolating the force variables.  Practice just the clearing aspect each time adding a different component to the frictional pull equation.  First, just clear with no step back or body weight drop and no rotation. Add in just step and feel the difference.  Take away the step and add in just the rotation of the hand and feel the difference. Put the rotation and step together and feel the accumulative benefit.

4.  Play with the idea of frictional pull on all  your blocks and see how it can be used to alter your opponent's body position.  For example, a R. inward block against a R. roundhouse punch with a little counterclockwise torque at the end of the block will pull their width component a little more so that their left hand becomes momentarily isolated.

5. Grafting:  This entire technique is only two moves (and about 1000 words to describe it!) and thus is easily joined with other techniques.  Use other techniques for follow up after the handsword to the throat; use clearing kimono as a follow up to other techniques you know.  Anytime they have a hand up that would be good to check or clear, clearing kimono a quick and easy way to integrate that feature.


6. Experiment with the good, bad, and ugly of frictional pull and affecting your zones of your opponent.  For example, clear your opponent's left lapel grab with your left hand doing an inside downward diagonal clear and you will notice that you turned his width towards you thus accelerating his free right punch into your face!  So know the implication of sending an object into motion that you do not become the receiving end of an "accidental move" that you cause. A classic example would be clearing somebody down and then getting head butted in the nose.  Congratulations, they are not holding your lapel but now you have a broken nose and are knocked out cold.

7. Practice hitting bags (focus mits and twin kicking targets ideal) with that R. outward handsword.  Ideally the handsword should also be conditioned over time by striking a canvas bag with beans inside.  Each strike in a technique is only as viable as you have prepared and trained it to be.



WHAT IS IN A NAME?
"Kimono" is the Japanese term for a jacket.  Thus clearing kimono is to clear the hand off of your jacket.  Additionally, clearing implies the universal sweeping of the height, width, and depth zones which is a crucial lesson introduced in this technique.
1 Comment
Michael Ernst
8/27/2011 09:43:25 pm

Clearing Kimono is one of my all time favorite techniques and is a perfect example of the “holographic model” where the entirety of the art can be found in two simple movements.

While I love this technique and I think the blog’s analysis of it is awesome, there are a couple of things as a professional engineer I just can’t let go, especially when it comes to the use of physics to help describe “Rebounding” and “Borrowed Force”. Trevor mostly has the right idea, but there are a few little things that aren’t quite right. In order to correctly describe what is going on during this technique you have to understand the true relationship between momentum, force, and kinetic energy. All three of these are related to mass and velocity, in slightly different, but important ways.

When we talk about mass, we usually think about how big things are or how much they weighs. In physics, mass is defined an object’s resistance to changes in velocity. Basically the more mass something has, the harder it will be to get it to speed up or slow down. Velocity is simply how fast something is going (distance/time). Velocity is vector quantity, meaning it has a direction and a magnitude.

Momentum is an object’s mass times its velocity and is expressed by the equation:
P = m *v
Momentum is a conserved quantity, meaning it cannot be created or destroyed only transferred from one object to another.

As Trevor pointed out, Rebounding is an example of conservation of momentum. As your arm comes down from the frictional pull it has mass and velocity, and thus a certain amount of momentum. When your arm hits your body, that momentum has to go somewhere. Where the momentum goes is dependent on the relative mass between your arm and your body. Since your body have much more mass that your arm, it is much more resistant to changes in velocity. Instead your body flying backward, momentum is conserved by sending your less massive arm back in the direction it came with no real loss of velocity.

Where Trevor got a little off track is when he said maintain the velocity allows us to strike with greater force this causing greater injury. While this is true, it doesn’t happen exactly how he described. Force is equal to mass times acceleration (i.e. velocity divided by time), not mass times velocity squared. What I think he meant to say was maintaining our velocity allows us to hit with greater kinetic energy which has the equation of ½ mass times velocity squared. Kinetic energy can also be described as force times distance. This relationship between kinetic energy and force is important when discussing the kenpo concept of Borrowed Force.

Injury is cause by force. When a given amount of kinetic energy is transferred to a target over a shorter distance or amount of time, the force is higher. Contrary to popular belief, the force of two cars hitting head on at 30 mph is NOT equivalent to the force of one car hitting a brick wall at 60 mph. It is only equivalent to one car hitting a brick wall at 30 mph.

If a car going 30 mph hit a stationary car of identical mass, conservation of momentum dictates that some of the momentum would go into pushing the previously stationary car back. While the kinetic energy of the moving car would be transferred into crushing the hit car, it would be applied over the distance that the car is pushed, thus lessening the felt force. The force felt on the car doing the hitting is also less, due to the longer time for it to decelerate from 30 mph to zero as opposed to if it hit something that wasn’t moving back. Think of this like riding a punch to lessen the force of a strike.

If there was a brick wall behind the stationary car, thus preventing it from moving back, the distance the car would be able to move back would be very small and the resulting force and damage to the stationary car would be much larger. Similarly the moving car would decelerate from 30 mph to zero almost instantly, resulting in higher force being felt by it. This scenario is like clinching an opponent behind the head while kneeing him in the face.

Now if both cars are travelling at 30 mph their relative momentums cancel each other out. The force felt on each car is the same in the second scenario, the force caused by decelerating from 30 mph to 0 almost instantly. The damage sustained by both cars and their occupants would be exactly the same as they if they drove into a brick wall, not more, not less. This is what happens in Clearing Kimono. His forward momentum prevents him from riding with your strike, thus maximizing the force of impact.

One last thing that is important to point out is that the force of impact is equal to both parties, the one doing the hitting and the one getting hit. That is why it is so important to properly pick the right weapon for the intended target.

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    Author

    Trevor Haines is the founder of Five Animal Kenpo and is a 6th Degree Black Belt in American Kenpo.  He has been a student of Kenpo since 1977 and an instructor in Kenpo since 1986. He currently owns Dojo Chattanooga in Chattanooga, Tn.

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    Sketch of Sijo Trevor Haines by Leslie Harrelson

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Congratulations to Meghan Gardner (2nd Degree Black Belt) and to Zachary Haines (4th Degree Black Belt)  -- awarded December 23, 2022.