Originally Posted by hobby
…These others are tidbits from my notes - just quotations with the source URL’s.
In order to deform, and then reform a ligament into a more desireable length and form, the applied “constant” load must reach over 40% of that particular ligament’s “ultimate load”. A ligament’s ultimate load is defined as “the final load reached by a structure before failure”.
I don’t think the first reference that Hobby cited (the pdf file) is saying that 40% max load is required. It seems to be making the more general statement that low load, long duration works better than high load, short duration.
The second reference talks about how to achieve plastic deformation of ligaments (stretching the spring beyond the point where it can snap back). According to this reference, 40% max load (failure) is required to reach plastic deformation.
But this process seems to be completely different from that of the first ref. The first ref refers to a biological process— “reformation” and “reconstitution” (paraphrasing) of the connective tissue over time, as the body’s way of responding to constant stress. The second ref seems to be based entirely upon the physics of stretched members—a material science process.
I had a roller blading accident a few years ago, and stretched some ligaments in my knees. I could literally bend my knees sideways about 10 degrees (supposed to be 0). That was plastic deformation. But what we’re trying to achieve with our penises is more like the biological process described in the first reference. We’re trying to apply a load over a long period of time to slowly coax the connective tissues to adapt to a longer state. This is not plastic deformation; it is growth.
How much weight is needed? Certainly less than 40% max load. The best answer IMO is probably as little as possible. My sense is that it should still be enough, however, to stretch the penis to the point where the ligs and tunica are under tension. This means using enough force to stretch the penis to its full flaccid stretched length, and then maybe a little bit more.
The trick is to coax the connective tissue to grow. Brava, the breast pump company, suggests using its pump at very low pressure for long periods of time. Breast tissue adapts to the stress by slowly growing. I’m not saying the penises work the same way, but there could certainly be some similarities, as the first reference suggests.
BTW, based on my knee experience, I believe that plastic deformation is really an injury. I don’t want to even think about what the max load of the penis would be. Probably hundreds of pounds.