Equating pumping and hanging?
This is about pumping but relates to hanging too so I put it here so all could get a chance to see it. If I am correct 1 inch Hg is equal to 0.49psi (pounds per square inch), so if you had your penis in a tube of area 1 sq” at a pressure of 1”Hg it is experiencing a force equivalent to 0.49lb. The most common tube sizes are 1.75” and 2” which have an areas of 2.4 and 3.14 sq”. So at a common vacuum of 5”Hg in a fully lubed packed 2” tube it is equivalent to a force of 7.7lb (5x0.49x3.14)or 5.9lb in a 1.75” tube. This sounds about right, the highest weight I have heard used in hanging is 45lb which would need 29.2”Hg in a 2” tube which is a huge amount. The highest usual vacuum is 15”Hg which is 23lb in a 2” tube or 17.6lb in a 1.75” tube. Bib and others often say it is best to work on length before girth which makes sense as you will have more tissue to try and stretch with a given weight, the max weight you can handle. When the girth increases so does the circumference giving more area to grip with a hanger but there is always proportionatly more inner tissue so it doesn’t help much. However with pumping if you have a lot of girth you can use a wider tube which gives more pull per sq” for a given vacuum, the max vacuum you can handle. This increase in diameter is proportional to your girth increases (a good thing). So could pumping in a lubed tube be equated to hanging? One downside of hanging is that you place it behind the glans so there is a section that is not being stressed at all. The downside of pumping at high vacuum to replicate large hanging weights is blisters etc. If you can fit into both a 1.75” and 2” tube you will get more pull from the 2” tube.
Do any budding physicists have comments? I have ignored friction effects on the tube and the rounding of the glans (I think these non-inline forces cancel out). Have I made some fundamental omission/error. It also shows the need for a wide base on a cylinder at high pressures as it is a lot of equivalent weight/force exerted on your body. If you could take high vacuums shouldn’t your gains be just as permanent as with hanging? They may even be better at a given equivalent vacuum due to the entire penis being subjected to the force.
If pumping in a narrow tube are you really erect? When hanging the penis gets quite thin so I would think this may have to be replicated, could this be where my theory is wrong? does the lateral expansion interfere with the “pulling force”
Please post links if this has been discussed before. I searched and found nothing.