Clamping during Pumping

lol I posted in that thread cap linked several times. What a cycle jerk ;)

Has anyone tried the wide narrow bands that are called Ranger rubber bands or some such? They appear to be used for bundling para cord and other gear to keep a pack organized. There are 3/4D x 3/4W sizes and 1.25D x 3/4W sizes. I was thinking for a more restrictive cock band in general but they may work for pumping. The width might help keep them from sliding with the extra surface area. The issue I have is the band sliding on the lube. Not sure there is a way around that for pumping. Some of the cheaper Ranger bands look like cut inner tube but a few styles look more well made.

I’ve successfully clamp-pumped with an actual cable clamp. The hardest part is getting a tight seal around the cylinder since you cannot seal it with your fat pad like you do while pumping normally. The cylinder needs to be slightly larger than your clamped girth, and it must seal either via direct contact with your penis or with the wrap you use for your clamp.

First you clamp, then lube up, then apply the pump. The amount of force generated is unreal. The last time I did it I split my urethral opening and bled all over the inside of the cylinder. I also ended up with severe red spots all over as well as other negative PIs for the next couple of days. This was at only 4 or 5 Hg.

So it can be done, but I don’t recommend it due to the high likelihood of injury.

Wow! New frontiers and POWER expansion!

Seems too uncontrollable though. Way unsafe. Bands, worth the gamble. Actual clamp? Seems like suicide.

I think a looser silicone ring works well for me. If I use a smaller one that I might normally use for sex it snaps. I’ve probably lost 30 bucks worth of rings from using too tight of a ring.

I find them extremely helpful in staying hard while not having to resort to porn for stimulation which to me is desensitizing and creates negative PI psychologically.

I agree. It’s too dangerous and likely not effective.

If I were going to do it, I’d clamp with multiple neoprene layers around the base. I.e. the neoprene itself is the clamp. The neoprene has to be fairly tight, and there must be several layers, in order to get clamp level expansion. Then I’d pump with an oversized tube and no lube using the electric HVAC pump so that a perfect seal isn’t necessary. The partial pressures would be plenty. No lube so as not to muck up the neoprene.

Unfortunately just clamping with neoprene in this fashion has caused some discoloration, so I can only imagine what pumping on top of it would do. Might try it some day anyway.

I pump in a fitted tube, and because the tube opening (which is hard material) is similar to my erect size I think there is some mild clamping type effect that happens naturally in this style of pumping.

Good thing no one mentioned yet is that you need FAR less pump pressure when clamped.
If you go normally 8 hg with a clamp only 2-4hg are needed for similar intensity.
Lower hg/pressure with clamping.

A base below the opening of the tube that can tighten is my idea.
The key to all clamping(imo) is to be as far at the base as possible.

I’m thinking of something silicone with a function that creates pressure/clamping at the lowest possible point.(without moving up inside the tube)

Where does the clamp effect happen? At the very base I assume?
Most clamps move up the tube cause of the suction.

Right at the very base, even below the base, the part of the shaft and base bulb that is normally inside the body and gets pulled out into the tube opening when pumping.

I think part of the clamp effect is because that penis shaft area and ligaments etc is bigger than the external penis girth, so it’s a bit like trying to pull a rubber “cone” into the tube opening. And partly because the tube is only a fraction larger than my erect size, so when applying vacuum the penis expands of course.

I don’t think it’s a strong clamping effect, because there is no redness at the base area after pumping, which I know from experience happens if the tube is too tight at the base. A mild clamping effect at most.