Idea: Pumping with slim elliptical cylinders

johnny-wang;678212 said:

Similarly would it be a nice idea to do some hanging/extending before pumping in the slim cylinder?
Your opinions are valuable and absolutely welcomed.

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I forgot to answer this before. I believe hanging/extending would be beneficial. If it is possible for length gains to come from using a slim tube I feel hang/extending before will only help.

templnite;678257 said:

Nah its not that I wanted to argue its just I thought he was telling you "hey you don't know what you're saying" type of thing. Anyway I don't think anyone believes in packing tubes here they probably do that alot in the pumping websites though.

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Seems to be the case . However, I will play with this a bit + hanging, manual stretching and my pseudo chem pe just to see results.

Alright man don't pack those tubes too hard XD. How does it feel when you're in an elliptical do you get more stretch feeling sideways? I'm outgrowing my x30, and I pack it as quick as ten minutes which is great I think as long as I cement it. I remember mike told us to find the threshold where you go from real expansion to just fluid, and I think I can tell when I'm there by feeling. Basically I sit in the Xtreme until I cant feel it stretching, and that's when I know I've had good pump

johnny-wang;678259 said:

Seems to be the case . However, I will play with this a bit + hanging, manual stretching and my pseudo chem pe just to see results.

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pseudo chem pe? Can you share what you're doing?

youknowme123321;678236 said:

Reading through this thread makes me miss some mebers who aren't around anymore like smerc and zambrodum. They were great members. Always reasonable and open to discussion.

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were did they go and why ?

My thoughts about packing the tube is that you gain more girth than you will in lenght in a cylinder, so i focus on not packing the tube.

And i am focusing more on length..you see.

youknowme123321;678261 said:

pseudo chem pe? Can you share what you're doing?

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Well I say pseudo chem pe, because uisng pge-1 isn't exactly chem pe, per se.
However, I might throw some tb-500 in the mix also, to use with heavy hanging
Heavy hanging > Tb-500> Extender > REST > Pge-1

johnny-wang;678279 said:

Well I say pseudo chem pe, because uisng pge-1 isn't exactly chem pe, per se.
However, I might throw some tb-500 in the mix also, to use with heavy hanging
Heavy hanging > Tb-500> Extender > REST > Pge-1

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I see, thanks.

Packing the tube will help with length only if there is intensity given in a linear way, like BathMate Hardcore Stretches. I think the same would apply here.

BathMate Hardcore Stretches are pretty hardcore

Here is the link if you want to give it a shot:

BathMate Hard Core Stretches for Length

Heres the link about the guy that was using the industrial pump for length gains. Its a interesting read. this is some of what he said. He cycles the pressure on and off for about 5-10 second periods each, gradually building pressure as his size increases through the session. During each session he works his way up to near full vacuum pressure (14 psi or about 30” Hg) using an industrial pump. He drills a small hole in the end of the tube to use as a release valve considering the potential dangers of being at such high pressures. Another safety measure is using some foam padding between the tube and the pubic region because this amount of pressure causes the tube to dig into the body with considerable force - he calculates it at 73 lbs of force. He notes that there is little benefit to do more than a 30 minutes total session (15 minutes under pressure, 15 minutes no pressure) each day. He also notes that a correctly fitted tube is essential when pumping at these pressures. So it sounds like around 30 Hg is very possible the only difference sounds like the industrial pump would get to those pressures a lot faster. heres the links.
https://www.thundersplace.org/penis...mperatures-under-hg-vacuum-2.html#post2021291
https://www.thundersplace.org/life-...g-girth-and-womans-sexual-satisfaction-2.html

I think something like this should be able to work but I think it would take some serious engineering to make something that would function the way you're talking about.

Here's some quotes to get a better idea:

I gained over an inch in girth with jelqing, squeezing and manual stretch over a 6 year period but more than half of that was in the first year. Once I realised PE was possible I reduced intensity and frequency.

By the time I started pumping my penis had tougher skin, was darker and had better circulation than when I started PE. Circumstances provided more private time in the last year making pumping a possibility.

Since I started pumping I can gain around 1/4” in both girth and length every two months with a dedicated pumping routine of 30 to 40 minutes a day for 4 or 5 days a week. I can pump up to full vacuum but by cycling vacuum only seconds at a time. I find this causes less external stress than long duration at lower pressure. I am now on my 4th cylinder, increasing by a 1/4” in diameter each time - the first cylinder was too small so quickly discarded. If the tube is not thicker than your erection the stretch is diminished and the tube pinches the skin on the shaft no matter what lubricant is used.

With the 2.5” tube I currently have, the stretch gets up to 73lb, which is reacted against the pelvic bone so I have added extra cushioning on the base of the tubes to prevent irritation. The tube actually gets warm due to increased blood flow with the cycling pressure. With long duration low vacuum the penis will get colder due to reduced blood circulation.

What I do has to be done carefully and needs care as well as understanding of the forces involved. Using a tube much bigger than the penis and going to full vacuum is dangerous.

I stretch and am semi-erect before I start. Level of arousal varies while I pump. I do not aim to maintain an erection.

I control the build up in vacuum but still cycling so my shaft is almost filling the tube before I start cycling up to full vacuum. The variation in pressure when semi-erect is similar to masturbating. If I allow vacuum to rise rapidly while I am still soft I end up with scrotum and testis inside the tube and that can be painful. My scrotum hangs much further when I am soft since I have been pumping but when erect or pumping the excess skin is pulled up tight. The testis are tight against the base of the tube when I pump.

Your are correct that stretch on the penis depends on its size but the force on the cylinder depends on the size of the cylinder not penis size. Problem is if you place a penis in a cylinder too large for it you will end up with balls and all inside if you go to full vacuum. So you are not just stretching penis but scrotum as well. I would not like to expose my scrotum to full vacuum.

I have gradually worked up to a 2.5” cylinder. Even when I first used that I would start with the 2.25” cylinder until I was fully stretched in girth then go to the larger cylinder. Now I just gradually cycle pressure up to full vacuum. It only takes a minute or two to pack the girth. That tube is 10” long and I aim to pack in length as well as girth. I see not point in being any bigger. I have found my sustained length and girth are both around 0.5” less than I stretch to.

It would be interesting if you could provide a link, a pic or at least the name and model of your industrial pump.

This is not identical but similar size and cost:
http://www.ebay.com/itm/Rotary-Sing…=item1c30834c77

This size pump will evacuate the tube in under a second once the base is sealed against your pelvis. Do not rely on the pressure release in the tube of the cylinder. It is best to drill a 1/8” hole in the circumference of the tube near the outer end that you can seal with your thumb. This gives complete control over the rate of pressure increase and you can release immediately if you experience pain - for example if a testicle gets pushed in.

If you do give it a go start with a tube that is not much wider than your shaft so you reduce the possibility of scrotum going in.

The pressure is intense and it takes a while to condition. At first you may not want to go to full vacuum.

Due to the high vacuum you will get fluid build up but cycling reduces the amount of fluid compared with continuous pressure. My limit is causing a blister on the glans. This takes time to go away so it is better to work within the limit. Much more than a 30 minute session can cause a blister.

You will also need to increase the cushion on the end of the tube against the pelvis. I tape on layers of 3mm thick high density foam rubber. If you can inside the poor man’s tube (plastic glue tube) you will need to flare the end before fitting rubber. This can be done using heat and taper of a white wine bottle.

"How have you fit your tubing to the pump? Is there an attachment that you had to rig or does it have a manufactured one that works with your tubing?"

The pump takes standard plastic tubing. It simply slides on like any tube fitting.

"Wow, I knew we were all crazy but I am NEVER sticking my dick in something that looks like that. That’s the height of brave+crazy.
It is only a pump. A simple hand pump for evacuating a wine bottle can get down to similar vacuum but just takes longer."

Regulars here know that PE is possible. The results tend to be related to time and load. Low load and long time is likely least traumatic on tissue. I am experimenting at the other end of the spectrum.

When I am fully expanded there is very little spare space in the cylinder. It is evacuated in about 2 seconds. These days I do not hold the vacuum for more than about 10 seconds in a cycle and often no more than 5 seconds. I tend to increase the on time toward the end of a session. While at full vacuum I do small motion of the outer end of the tube to increase the ligament stretch using leverage against the pelvic bone. Each cycle the penis is stretched a little further. I release momentarily - maybe 2 seconds although it varies. I lube and shake out 3 or 4 times a session. Over each session the stretch at full vacuum increases by about 1/2” during the 30 minutes and that takes hundreds of cycles. If I do this routine 4 days a week I get a permament gain of 1/4” every two months.

I have held full vacuum for more than 5 minutes at once but that is a long time to have no circulation. If the glans gets cold then you know you are stopping blood circulation.

It is not possible to do what I do with a hand pump even it had the ability to pull near a full vacuum. You would get stronger pump hand but not much impact on penis.

I do get fluid retention but I select the cylinder size so it is not large enough to allow a doughnut - fourth cylinder now with approximately 1/4” larger in diameter between successive cylinders. My shaft is darker than it was before I started PE but no different to manual stretching and squeezing. I have pubic hair up the shaft now basically equivalent to the gain in length. I trim but do not shave because there is less irritation particularly from the pressure around the base of the tube. In hot weather my scrotum hangs about 6” down, almost the same as my flaccid penis.


"I’m not equating time at constant pressure to time at cycling pressure, I’d like just to know for how much time in total your penis is held under 14.71 psi, sorry if I was unclear; a rough measurement, say 5 minutes? 10 minutes? Thanks."


The full pressure totals around half the time of a session. Probably more than is sustainable without some adverse affect if applied continuously on a daily basis. Even after 5 minutes at full pressure the glans is cool and loses color.

Any fluid build up goes overnight.

My testosterone cycle of 6 to 7 days seems to be more pronounced since I started this pumping routine. If I do not ejaculate at least once a week I have disruptive sleep due to very hard erections waking me up 3 or so times a night. It is more than just the increased penis size as it was not noticeable when I was using manual PE methods. If I ejaculate within 4 or 5 days I sleep normally.

Crazy info but I like it. I tried doing that but I lost interest after a few days. I grew from a 2" to 2.25" to 2.5" over a few months, I had a 3" ready but I lost interest in pumping. I then got rid of everything. I do want a new air pump, I've been considering for months. The water with the Bathmate is great and I like it but can be tedious. I'm definitely understanding the information here. I myself believe you can gain length given the correct tube, but, it's over long periods of time. You can do manual exercises along with using some tools and gain everything within a few months time, not years. The experiment here is very intriguing. If I had the patience for that, I would in a heart beat. I just have the proper tools I need as of now. There is no need for me to get more.

I'd like to add to the question, what about introducing water into the tube?
Add a water catch, and your good to go.
How would that effect the way the penis reacts?

This question was asked about using water in this set up and this is what he said:

Questio asked below:
"Good info, since you seem to know a bit about this what difference does it make if you fill your tube with water and pump that out ?"

His response below:

You would not want to use water with an industrial vacuum pump.

A very important aspect of what I do is to have total and instantaneous control of the pressure. This is simply achieved by drilling a 1/8” hole in the cylinder that I place my thumb over. This means as soon as the hole is closed the pressure begins to build. If the tube does not seat well against the pelvic bone or the tube is too big and/or not seated against the pelvis resulting in a testicle being pushed into the cylinder then it is very easy to release pressure. I would not expose my testis to full vacuum.

When I start out I stretch the shaft and place in the tube in a flaccid state. I slowly increase the peak pressure but still by cycling until the shaft fills and I am semi-erect. The cycling pressure produces the sensation of masturbating so there is a response to that as well as the blood being forced into the shaft under pressure.

The hole provides a fail safe that is much more readily activated than the release valve supplied with a typical cylinder tube. The hole does create a weak point in an acrylic tube so don’t drop it because it could get hairline cracks radiating from the hole and leak air. I have also used PVC tubes but it is preferable to have a clear tube with graduations so you can assess the stretch.

If anyone tries this they need to start with a cylinder that is not much larger in diameter than the erect shaft. Also there needs to be extra padding at the base of the tube to distribute the reaction force over the pelvic bone.

The blood circulation stops at quite low pressure so cycling the pressure ensures there is still circulation albeit intermittent. It also reduces the rate of fluid retention. Doing beyond about 30 minutes a day is not going to do much for girth because the fluid builds under the skin and it is pressed against the tube wall. This increases the friction down the tube so the stretch is reduced.

Like any PE it takes a while to condition the penis to the extra stress but I have found cycling to full vacuum less traumatic than any full-on manual manipulation or sustained low pressure pumping.

Haha he didn't answer. He just jumped to explaining what he did. I understand the complications it could bring though.