The great China vs Euro loop myth

  Yes, the point was that generating pure power (which is what this tangential discussion was about) is not a question of whether your elbow is bent or not. The muscle groups that create power in a TT stroke, the muscles in your legs, back, abdomen, shoulder etc,  they don't care if your biceps & triceps are keeping the arm straight or bent. 

(With LGL/WH hybrid I meant WZY has a very complete RPB like WH.)

Let's say the swing took 1 second, just for simplicity.

No, you can't simplify human physiology like this, and say that a fully fit TT athlete will make a straight arm 1/4 rotation in the same amount of time he/she uses to make a bent arm 1/4 rotation. 

That same shot would have been even more powerful with an open arm, and this is not up for your approval and consideration, it is a fact of physics

You're attempting to model something as complex as a TT stroke, which uses a large number of muscles ranging from foot to wrist. And you're modeling it as if it's a mechanical joint powered by a single electrical motor.

You can't just assume that any given person will be able to swing his/her straight arm at the same speed as he/she can swing a bent arm.

Knowing the facts of physics is one thing. The problem is applying those physics to a human playing TT.

Anderni wrote: Let's say the swing took 1 second, just for simplicity. For this 1 second the arm concluded a 1/4 of a full rotation (90 degree swing) No, you can't simplify human physiology like this. Even a fully fit TT athlete will not be able to make a straight arm 1/4 rotation in the same amount of time he/she uses to make a bent arm 1/4 rotation. The straight arm swing will take longer.

You two are talking past each other and not talking about the same thing. 

Anderni,  given his assumption that the extended and non-extend stroked will alway take 1 second, he is right.  However, that 1 second stroke is a very slow stroke and not energy or strength limited.

You are assuming that the strokes are made with the same amount of energy and very quickly ( high power ) and then you are right.   Why?

Calculating physics is one thing. The problem is applying those physics to a human playing TT. Humans are not robots, we have a complex mix of muscle groups that cannot be modeled the way you do.

I think Anderni should look up inertia and how it is affect when the mass is moved away from the axis of rotation.  It may help him with his argument but that would require learning some physics.

How many physics classes do you think physiotherapists take?

Not enough.

It is a fact of human physiology that you can not reduce the behavior of human limbs to simple physics calculations.

True, people are not well defined shapes nor is the density of people consistent.  That makes doing calculations on people difficult but it certainly isn't hard to back your statement with a little physics.  How does the extension of the arm affect the rotational inertia?

     Perhaps engineers should read up on physiology so they don't think this entire argument hinges (literally) on inertia.  But your sentiment is understood and appreciated, pnachtwey. ;) Physics is an interesting subject but the laws need to be applied with some thought and consideration of what you're attempting to model.