V-Stretch Theory Inaccurate.

I would like to give a counter explanation for the usefulness of V-stretches and A-stretches and try to dispel some of the established theories, which I believe to be inaccurate and unreasonable.

In performing an av-stretch the traditional technique seems to be to anchor the penis head with the right hand and then add an additional stress vertically and along the midshaft (using for instance one’s left hand). An explanation is usually given that relies on vector theory. See the attachment. Two problems with this approach come to mind.

1) I have never seen anyone emphasize that this diagram uses a perfectly idealized frictionless string with zero width. ZERO width! Translating this theory into the real world of 3-dimensional solid bodies with internal stresses is not a simple step.

2) It seems like people imagine that this stretch magically increases the tension in your willy. This is not the case. Your right hand which is pulling along the axis of your wiener (as the 6lb force in the attached diagram) must sustain the FULL force of tension in your willy. Why not simply pull straight out with 6lb’s of force?

In addition, an explanation has been given that relies upon an analogy to a clothesline. In this analogy it is claimed that tethering the clothesline between two trees and pulling down in the middle of the clothesline will generate more force in the clothesline than simply pulling only on one end of the clothesline. Thus, it is claimed that adding a force to the middle of one’s wiener will increase the forces in it in the same manner. Technically I could agree with this, but with one very important caveat:

1) In the clothesline analogy it is assumed that these trees you use to hold the clothesline are infinitely strong. That is that they can withstand any force generated by your body weight pulling down from the middle. However, in crossing over to PE and your johnson, people seem to forget that one of the anchor points is your right hand. Whatever axial tension that is generated in your johnson by fulcruming in the middle MUST be sustained by your right hand! Why not simply pull straight out with your right hand at this new increased force?

So you see I have two major criticisms of the fulcrum theory of av-stretches. First is that all present explanations I have read reduce your penis to a one dimensional frictionless string, obviously a bad (and unpleasant) assumption (ok that was my one attempt at a joke in this thread). Second is that your right hand will always be withstanding ANY additional axial forces you claim to “magically” produce by the use of a fulcrum. You can’t add tension in your penis without pulling out harder by the same force with your right hand. Why not simply pull out harder with your right hand in the first place?!

Ok, now that I have laid out the groundwork of my criticisms of fulcrum stretch theory, let me attempt to explain why the various fulcrum stretches are in fact useful.

1) When jumping from a 1 dimensional string to a 3-dimensional solid body there is a localization of forces at the outer edge of the fulcrum. Think of a strong man bending a metal bar. If he tried to break the bar by pulling straight out on both ends his attempt would end in vain. However, if he tries bending the bar over a fulcrum, his force gets applied to a localized area at the outer edge of the fulcrum point. In essence, all his strength is localized into a small area around the point of the fulcrum, thus magnifying the force at this one area. It is the same when trying to tear a piece of tape, the tear always develops right next to you “tearing finger”. Your tearing finger acts as the fulcrum in this case, localizing the stresses to a small area around the corner of your finger (or better yet, around the very small edge of your nail). So in PE, when you use a fulcrum there is a localizing of forces at the fulcrum point increasing the forces experienced in this local area (which does not have to be accounted for by extra pull from your right hand). In order to achieve maximum benefit from this effect, you should ensure your grip completely encircles the head of your penis (I won’t go into the reasons for this unless someone asks).

Also, I feel like pointing out a similar concept that relates to erect bends. When you bend a 3-dimensionaly rigid body such as a cylinder, the inner edge of the body will be compressed and the outer edge of the bend will be under tension, with the majority of the forces being located at the “point of inflection”, ie, the point of the fulcrum.

2.) Since we are dealing with a relatively complicated three dimensional object (our wieners), the applied forces aren’t as simple as those in the attachment that we already discussed. One important point that people often make is that they feel an increased stretch at the ligs and seemingly along the length of their shafts. However, there is a simple explanation to this that I have diagramed in another attachment (see below). It arises because when you apply your fulcrum point with your left hand, you inadvertently also apply an outward force with the fulcrum. You may not even realize that you do this. However, next time you try a fulcrum stretch using your hands, see if your left hand is not also pulling outwards away from your body. You are able two generate more force because you are using two hands. You could generate the same resultant forces by simply gripping your penis with both hands in any reasonable geometry that you wish.

Conclusions: The usefulness of A or V-stretches does not arise out of the decomposition of vector forces into component directions, but rather from the localization of the forces at the point of the bend and the increase in total pulling force by the use of two hands.

What do you think?

This has been argued about so much I want to puke!

:horse:

Sorry, I didn’t think he was dead yet, and I wanted to deliver the finishing blow. Plus if we get to the bottom of these things it could lead to new techniques; or at the very least understanding the old ones.

Although I would consider myself still a newbie, I do agree with your theory Tube. At least from an engineering standpoint.

Well thought out post Tube.

Instead of focussing on the subject in hand, I’ll congratulate Tube on being a damn fine addition to Thunder’s Place! Haven’t had a new member that has risen so quickly in esteem before.

I could be wrong but I don’t think this issue has been explained in such detail, or in such a composed manner, so I believe it to be useful.

Well I learnt something! :)

Tube, I agree with you completely. We are in agreement. It’s good that we agree.

ICM,

>Instead of focussing on the subject in hand, I’ll congratulate Tube on being a damn fine addition to Thunder’s Place! Haven’t had a new member that has risen so quickly in esteem before. <

It’s the avatar dude. The source of all our powers.

SS4

This is the thread I was talking about that got over argued and a little out of hand. It is probably too much to wade through, but it will give you an idea of how hot this topic can get!

Physics of V-Stretches

Better to discuss/argue this than one of the damned G words. God, guns or government.

or killing fucked up babies.

Oh, by the way, thanks for the link gprent, I hadn’t read that one, I was getting my information from yet another thread on V-stretches.

Thanks for the compliments ICM, Andrew, and SS4.

Note to ss4: And don’t stop looking at my avatar. You may think that you are being hypnotized but you … are …. not being … hypnotized.

I just finished reading gprent’s link. Boy, heated is an understatement. That Ned character sure was condescending and dogmatic. Its too bad because he may have even been right about some things. Anyways, I’d like to start up the argument again if anyone is interested :D .

ICM, thanks again for the props, but keep in mind that I have even had one of my threads totally deleted by Thunder himself. It was an EEEEVIL thread.

-Tube

Nice presentation, I believe that you are correct. Two points that I mentioned in the previous thread on this topic is that by pressing down rather than simply pulling out with the other hand, you get a better stretch due to the leverage that can be achieved by putting your upper body weight into the stretch. Also, if you face the septum as a limiting factor, by using the A-stretch for example, you can stretch the entire top of the shaft more than the bottom, having the added benefit of specifically attacking your limiting factor. By using a large round fulcrum, like the wrist, the focused tension can be diffused in a larger area of the shaft. I think.

I believe your conclusions are only true when the downward force is applied to the center of the supporting filament. When you are not pushing in the center you are dealing with 2 different angles and the force is not equally distributed through the 2 resulting line segments. When, for example, the downward force is closer to the base, the majority of the force is concentrated in that segment of the supporting filament. And pressing down on a taunt filament does create component forces that exceed the downward force. I can move a parked car with my own body weight If you hang a 100 pound object from a vertical rope, and the weight is in the correct position, one string segment will experience many times more force than the other. Try it with a string, sone 10 newton weights and 2 spring scales and you will see. The key is to apply the pressure to the penile segment you are most wanting to experience the greatest force. For me, I apply it closer to the base. I lock my hand in place, grab the end of my glans, and push down hard near the base, magnifying the force and concentrating it in the shorter line segment to tear the suspensory ligaments. I have worked the vector math many times resolving the force into its respective line segment components. And I have done the labs on numerous occasions (with cord, newton weights and spring balances). Science aside, we both know it works. That is all that counts. Right? MXL (7-Up the V-stretch guy)

For me, I could never get much force going especially with the “A” stretch, for exactly the reasons you describe. However, I can feel a good stretch when using both hands in a coupld of different positions. My overhand OK grip just isn’t strong enough, or my glans too small, or whatever - just can’t get much force going without slipping.

What I’ve done, is to use my whole hand to grip with, and the other hand for additional support/grip. Imagine that you are gripping your shaft with one hand, using all fingers just like you’re holding a baseball bat. Stretch straight out, you will have the glans peeking out at one end and hopefully an inch or two or three of shaft below your hand. At this point, I add the other hand and then bend the whole thing into a “V”. It seems to be even more intense when I use the whole hand reversed, so that my thumb/forefinger are closest to my body.

Done in this manner, I feel that I can stretch more with the “V” than without. The fulcrum in this case is simply one side of my hand, and it seems to absorb some of the force so that I can stretch harder without loosing grip. Much like it you can hold a rope against a stronger force, by doubling the end up.

Using an analogy, a guitar’s strings are run through a small hole in a tuning machine. It will slip out easily, until it’s wound around the shaft a couple of times. But, even before one full rotation, just a 90º bend is enough to anchor against a fairly strong force - it would slip if tuned (tightened up) to pitch, but holds enough for a lower (looser) pitch. But, without the bend the string won’t hold at all, it will slip right out.

wesb

Hmmmm,

You guys bring up some interesting posts. Some I was also thinking about to myself and others that I had never considered. I’ll get to each of your posts in turn.