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The Physics of Water Pumping

Just an addition from a return-to-pumping guy, I had an idea about the water getting into the pump ( I have the Harbor Freight brass brake bleeder pump set ), I noticed that I had the pump end of my tubing connected to the part of the catch vessel lid that has a clear tube extending to the bottom of the vessel, was backwards - that part should be on the side of your tube end. Then, a brainstorm, one I will be trying at my next session - I have one of those ‘miracle chamois’ (from the dollar store, no less), so I plan to cut a strip and wind up a short length to fit inside the catch vessel - I hope that it would absorb water enough to keep it out of the pump works, just in case I let too much water get out of my tube.

Question, I have 5 inch BPEL but when I use bathmate I can’t go longer than 4,5, is it normal? Shouldn’t I be getting full erection while using it?

Originally Posted by Dvdck
Question, I have 5 inch BPEL but when I use bathmate I can’t go longer than 4,5, is it normal? Shouldn’t I be getting full erection while using it?

You may be getting girthier and losing length.

I use a tube narrower than my girth and it stretches my dick out almost 1/4” more than my erect length.

IT takes a lot of heat and a good 40 minutes of pumping in stages to reach that length though.


Began December 2009 at 5 7/8" length and 5" girth.

As of December 5th 2012 7 3/8" BPEL and 6 1/8" base girth.

Going for the magic 8"x6"

Using the BM I usually reach 2cm more than my normal length and a +0,5cm girth. But it seems I cannot keep (at least for now) the result longer than few hours.. A pity.


Starting at: 7"-18cm BPEL x 5.1"-13cm EG with a big downward curve (measure taken with much pain straightening the penis... Measured following the curve is 6/10"-1,5cm more)

Desired measures: 9"-23cm BPEL x 6.5-16,5cm EG the most straightened possible.

And then? In my dreams 12.25"-31cm BPEL x 8"-20cm EG, ahahaha... But this is only a personal fantasy and surely even very uncomfortable to manage...

Originally Posted by Aleedinver
Using the BM I usually reach 2cm more than my normal length and a +0,5cm girth. But it seems I cannot keep (at least for now) the result longer than few hours.. A pity.

I wonder how much pressure a bathmate generates?

My pump uses oral pressure and I wonder the same about it.


Began December 2009 at 5 7/8" length and 5" girth.

As of December 5th 2012 7 3/8" BPEL and 6 1/8" base girth.

Going for the magic 8"x6"

Originally Posted by a-unit
I wonder how much pressure a bathmate generates?

My pump uses oral pressure and I wonder the same about it.

I used oral pressure for a long time. When I bought a pump I got the same feel at 10hg.


Started 7.75x5.75

Currently: 9.75bpX6.75eg My Picture Thread

Goal:10.0bpX7.25mseg Building a thicker unit, click by click, pump by pump, jelq by jelq!

Originally Posted by Titleist
I used oral pressure for a long time. When I bought a pump I got the same feel at 10hg.

I’ll take that as a good rough guide. If I really crank it, I get edema build up where the shaft behind and just below the head doesn’t hit the side of the tube.

Everywhere else hits the side and slides slowly up the tube. I’ve noticed I need to be entirely lubricated or it feels like my skin is going to tear.


Began December 2009 at 5 7/8" length and 5" girth.

As of December 5th 2012 7 3/8" BPEL and 6 1/8" base girth.

Going for the magic 8"x6"

Originally Posted by Dvdck
Hey guys I just bought this kit https://thickwa ll.co.uk/shop/p … s/starter-kits/ does anybody knows if it’s safe to use with water too or only air?

Thanks!

Quick, contact Thickwall Cylinders and ask them to add this to your order: it’ll turn your pump into a hydropump without damaging it.

Thanks for the help ordered one already!

Originally Posted by a-unit
I wonder how much pressure a bathmate generates?

My pump uses oral pressure and I wonder the same about it.

I have a bathmate and now I got a air pump with gauge, I got to say that I’m a little disappointed with the recommended pressure for the air pump sessions,as I read that a good pressure is around 5hg, the bathmate does a lot more pressure I would say around 10hg.

I got to take a picture of the gauge and post it here, just to make sure I’m really at 5hg, because it’s so strange that 5hg feels like such a soft and gentle pressure that I can’t think how that it can make good gains.

Anyhow, I’m following your hint and gonna get myself a tube just as wide as my mseg so I’ll get only length out of it.

Once I have the thickwall pump, does the other brand’s cylinder fit with my pump?

Dvdck, I had the same experience!
I was surprised how high the Bathmate’s vacuum was, no wonder they don’t recommend pumping for more than 20 minutes.
When I first tried hydropumping with my Thickwall cylinder, I barely experienced any expansion until I pumped to beyond 6 Hg. I have to say, it was much more comfortable than my Bathmate but after 30 minutes (3 x 10 minutes) of pumping like this, I didn’t get the usual temporary expansion. I suppose if you can maintain a strong erection for most of that time it might help but that’s difficult in a bathroom without much sexual stimulus.

Those that have had success with water pumping, recommend long duration with low pressure. It sounds like ADS for girth - keeping your penis artificially expanded for as long as comfortable. I suppose wearing a cockring afterwards continues the work. After researching ADS, it seems that you need to apply the minimum tension that will cause the body to generate new cells to reduce the tension, this process is very slow so many hours of wearing ADS achieves best results. Hydropumping will probably reduce the time necessary to get the same results as normal vacuum pumping because of the physics but when you’re used to intense workouts it doesn’t feel like it’ll work. However if you apply the same logic as ADS it should, you just need to find that vacuum pressure/time sweet spot to get best results. Higher vacuums above 4Hg/in will cause problems such as blood spotting, edema, blisters and discoloration (it took me 1 year of no pumping for that to disappear). Long durations at these pressures will give you extreme edema that allows you to pack the cylinder but this thread is about targeting the expansion of the tunica, not the outer skin

capernicus1 suggested I do longer sessions - 45 minutes at 3-4 Hg/in. I’ll give that a go this evening. I usually add Epsom salts to my bath water so that’ll give me longer to absorb the magnesium.

To answer your question, Vacuum pump connectors are standard wherever you buy them so you shouldn’t have any compatibility issues.

Nice thanks for the info I’ll try this 3 x 10 minutes set tomorrow

Air pumping I get a little longer than BP length but only get an extra 1/2 inch expansion in girth.

Water pumping I get to BP length but get just over an 1” expansion in girth. Temporary, yes.. but awesome!

Water pumping is really great!

I do the bathmate by the way.


Feb 2016 BPEL ?NBPEL 6", EG 5.25

May 2016 BPEL 6 3/4", NBPEL 6 3/8, EG 5.25

July 2016 BPEL 7" NBEL 6 1/2, EG 5.5

Originally Posted by EyesOnSize
Air pumping I get a little longer than BP length but only get an extra 1/2 inch expansion in girth.

Water pumping I get to BP length but get just over an 1” expansion in girth. Temporary, yes.. but awesome!

Water pumping is really great!

I do the bathmate by the way.

What does your routine look like to achieve that result?

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