Re: Xing Yi or Hsing I (tangent from 1" punch conversation)


"xiaou2" <xiaou2@xxxxxxxxxxx> wrote in message
news:Xns972812FDE6DEAxiaou2hotmailcom@xxxxxxxxxxxxxx
> "Evil Shaman" <me@xxxxxxxxxx> wrote in
> news:dncsok$4q0$1@xxxxxxxxxxxxxxxxxx:
>
>>
>> "xiaou2" <xiaou2@xxxxxxxxxxx> wrote in message
>> news:Xns9727412C5537Cxiaou2hotmailcom@xxxxxxxxxxxxxx
>>>
>>
>>> Ok, this is good... Thanks for the explanations. I may not be a
>>> physics master, but I can do the punch. Youve in fact helped me to
>>> understand how to explain things better.
>>>
>>>
>>> Basically, the sudden stop, is what its all about.
>>
>> While it's true that a moving fist being stopped in a shorter distance
>> means a larger impact force, consciously forcing your fist to stop at
>> a certain point can only be accomplished by applying a force opposite
>> to its current direction of motion.
>
> * Not true. A cars brake does not cause the car to go in reverse when
> its applied!

You do realize that your body is not constructed the same as a car don't
you? You don't have brakes applying friction, you have opposing muscles
providing a counter force.

>You are merely tensing the LOOSE muscle masses all at once,
> locking them together, and sending a Surge wave of energy flying thru
> your body - trasmitting thru your fists into the target.
>

Tensing all your muscles at once is counterproductive. You are seizing your
body up and reduce the amount of momentum you can transfer into your
opponent. You only need to be rigid in the direction opposite of the way
you are moving to strike, so that you eliminate as much of the "bounce back"
as possible. Seizing up the muscles that oppose your motion actually hurts
you in this regard.

> If you were talking about a jab where you hit and pull back.. then I would
> agree.. But that it Not the case.
>
>
> If you do this consciously that
>> means that you are decreasing the velocity of your fist and lessening
>> the impact force.
>
> * You are Not reducing the veloticy.

If you are intentionally stopping your fist then, by definition, you are
reducing it's velocity. How do you stop something that is moving without
changing its velocity?

>You are impacting and releasing
> a boatload of energy on that impact. Like rolling a loaded catapult
> to the target, and at impact, pressing the Firing lever.
>

Do you think that if you screeched to a sudden halt at the moment you pulled
the lever that the boulder would hit harder?

>>>When you stop
>>> suddenly and then contract all your loose muscles at once.. you are
>>> sending a Huge amount of energy thru your now tightened (greatly
>>> conductive when tight) body.
>>

Nonsense. If it worked like you describe you would be able to punch into
the air then send out a huge shockwave just by tightening up all your
muscles at once. It doesn't work this way. What you are trying to do is
transfer momentum. As much momentum in as short a time as possible.
Momentum is a product of mass and velocity. The only way you are going to
increase the momentum is by increasing mass or increasing velocity.
Tightening up your whole body wont do this. Putting as much of your body as
you can into it helps because that increases the mass, but you dont do this
by just seizing up. You also want to keep accelerating the fist as much as
you can so that when it hits it hits with maximum velocity. A lot of what
you seem hung up on is the time that it takes momentum transfer to take
place. This is important because the shorter the time period that the
momentum transfer takes place in , the greater the impact force involved is.
What you seem to be mistaken about is the degree with which you can control
this. In order to shorten the time the collision needs to be as inelastic
as possible. The only effect you can have on this is by what you do with
your own body. You cant control how the other person absorbs the impact.
As far as your own body goes, the best thing you can do is make sure that
when you hit you reduce as much as possible the amount that your own
fist/body is pushed back in the opposite direction or allowed to crumple
from the equal and opposite force being put into it from the impact. The
best way to do that is by aligning the skeltal structure as strongly as
possible to absorb the impact, rooting yourself to the ground as solidly as
you can, and keeping the muscles tensed that provide resistance to the
unwanted direction of motion(which happens naturally because those are the
same muscles you are using to accelerate your fist in the first place).

>
> Incidentally in a knock out punch kinetic
>> energy is probably better. You WANT the head to move. The sudden
>> movement of the head is what causes the knockout.
>
> Hah!! funny stuff. Sorry, but whipping the head back in one
> direction as fast as possible will Not make a KO! Probably
> wouldnt even dizzy you. What does cause a KO, is vibration trauma.
> A mini-quake that shakes the brain violently. Not just a simple
> single direction force.
>

Sorry dude, but it is the impact of your brain bouncing off the inside of
your skull caused by the sudden motion that causes a knockout. Not a
mini-quake. Some people have more room for that brains to slosh around then
others I suspect.

Bryce


.

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