Hi Pumpers,
This is a recap of this weekend’s activities. On Saturday I ran a quick session using a single, totally intact condom, to see how I would react. By the time 10 minutes rolled around, I could see a small donut starting to form. At 15 minutes I had to pause the test, wrap in back of the glans (over the condom) and then proceeded to clock 20 total minutes with no further engorgement. This observation tends to corroborate 789’s using separate sections of condoms to protect the glans and along the shaft with enough latex in place to negate the furrow effect.
I packed the tube below the condom’s base ring like crazy and got a bit further down the tube (but, the length increase down the tube could be a cumulative effect of several pumping sessions or the added wrap could have contributed - not sure). In any event, the combination of wrap+condom got me a new maximum length down the tube.
On Sunday I used the thin ring at the base of a condom as a “thin” cockring. I was able to get it fairly close to the pubic bone ( or, so I thought). 10 Minutes in the tube and I observed (much as with the cock ring and condom tests) a small donut starting to form. I stopped pumping and started dry jelqs with the mini “condom cock ring” still on. I did 50 dry jelqs, re-seated the condom ring even closer to the body (it had moved up the shaft about 1 inch due to stretch and tissue expansion) and then went back in the tube and pumped for 5 more minutes. The engorgement did not grow too much more during the next 5 minutes but I thought I had enough so I terminated the test. Length down the tube dropped 1/4 inch versus the previous day but I did not use a wrap, either. I did get a distinct furrow from the condom ring just as the day before.
Speculations/conclusions:
1) cock rings, stallion cushions, or condom base rings significantly limit engorgement. I know I can safely pump without excessive fluid buildup behind the glans if I limit my session to 15 minutes or less (10 minutes is probably ideal, again re-confirming A8’s and PEforeal’s approach).
2) I do get a furrow at the point of engagement but the furrow with the cushion is less in its depth (larger surface area) but much larger in its total size (cushion is much wider ~ 1 inch in axial direction). A cock ring leaves a medium depth groove and a condom ring leaves a DEEP groove or furrow. I guess I need to quit slacking on my PE and build up some calluses near the base so as to limit “furrows” and grooves (LOL).
3) I sensed that with the intact condom (even though I got a fairly deep furrow at the base ring), I got less engorgement above the condom ring and along the entire length of the shaft - and, I got fierce packing near the base between the tube collar and the base of the condom. Even so, it appears that 10-15 minutes is all I could take in tube time before engorgement in back of the glans became noticable.
Summary - 10-15 minutes in the tube at <=5 inch Hg is about the maximum for me for all tests (cock cushion, cock ring, condom, or condom ring). All tests caused significant furrows. All tests benefit from dry jelqs either for a short time in the middle of a pumping session and certainly after a session in the tube to limit fluid buildup and retention. More latex (from condoms or whatever) is needed at strategic locations to optimize pumping time versus engorgement potential as follows:
1) Enough resistance (more latex) near the base of the penis to constrict blood flow out but no so much as to generate a furrow;
2) Moderate resistance along the shaft (adequate latex) to limit fluid buildup along the shaft;
3) Significant resistance in back of the glans (much more latex) to protect the circ scar and negate donut effects.
In other words, a latex sleeve with a custom thickness profile to match the aforemention 3 zones of resistance along the length of the penis would be ideal. Such a sleeve would limit fluid buildup in all zones and, as the middle zone is thinner, it would stretch to accomodate increases in the length of the penis as it would grow down the tube. The profiled resistance should allow longer tube times (if so desired) with limited fluid buildup (very desired) and no furrows (also, very desired). And, such a sleeve could be washed and re-used over and over again (very desired) as condoms ARE expensive.
I guess I had better get busy making some molds and buy some latex and catalyst.
Hope this Helps,
MrTiPS