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Oral suction versus manual pump

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Oral suction versus manual pump

Just a quick question because I have never used a manual pumping device before and am curious. With my cylinder, I have always used just suction from my mouth to generate the vacuum, and go with pure feeling rather than numbers.

I am wondering what kind of pressures I am using though. I have no guage either, just the plain old home made cylinder. I know from experience that I can suck to a level that can be quite uncomfortable to borderline painful with a bit of effort (the pain comes from balls being sucked in/crushed and the base digging into my pubic area, which left a big red ring!)

Whenever I use it, I always go up very slowly, and never beyond the level of comfort because I assume what I described as uncomfortable above would be what, 10HG or something rediculous like that. But of course there is no way to tell exactly what pressure I’m using. Can anybody who has used both types of evacuation methods give me any insight into what kinds of pressures I am likely using and what the difference in feeling is like between increments of HG?

I almost always pump underwater (in the bath) and I trim very close, so a good seal and a good warm up are non-issues for me.

I think that’s highly variable depending upon the person. I can’t even stand 5” hg… it starts to hurt in less than a minute. Other guys post about using 10” hg and it doesn’t even bother them.

I used 3½” hg the first four months, then kicked it up to 4” hg, and that’s plenty for now.

Without a gauge, you just don’t know.


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There is really only one way to know for sure. Install a gauge into your system. Isn’t it about time?

Yeah I guess. SO I have really no way to tell for sure even a rough estimate. But then again… there is the $ issue. I guess it can wait, I’ve waited this long.

Originally Posted by secjay
..Can anybody who has used both types of evacuation methods give me any insight into what kinds of pressures I am likely using and what the difference in feeling is like between increments of HG?
..

secjay,

I use mouth suction to generate the vacuum when I pump. For my own information, I did check what pressure I was using with a Mityvac gauge, and it was about 5” hg. At this pressure, I get a very good pump where my dick is nicely stretched and the pressure is very firm without being uncomfortable.

Peforeal


Forum Guidelines PAST: 5.25"L x 4.75"G (base),EBP (January 2001) / PRESENT: 7.50"L x 7.00G (base),EBP It doesn't happen overnight! Commitment! Focus! Patience!/ Main Routine = Pumping/Jelqing/clamping + Homedic TheraP or ACE Wrap TheraP or ACE Wrap

peforeal,

Thanks for your input, greatly appreciated. Maybe since I am erring on the side of comfort, I am using lower than 5hg?

That thread title is very misleading. But I’m sure you know that. :)


Progress Tracking As of 01/01/05 : 6.5 BPEL x 5.25 G As of 04/08/05 : 6.75 BPEL x 5.25 G Short Term Goal : 7 BPEL Long Term Goal : When a trip to china and getting on the great wall means hopping on my member

Really dog, how come? What did you think I meant?

Some kind of face off between the mouth and the device in a weird competition to see which one can get you off better? ;)

Density of mercury is 13.6 times that of water. So 1”Hg equals 13.6”Water in pressure terms. If you have a long piece of plastic tubing (10ft +) you could make a U-shaped water filled manometer. Although if you can suck up to 10”Hg you will need to be able to measure 136” (11ft 4in) of head of water!


Feb 2004 BPEL 6.7" NBPEL ???? BPFSL ???? EG 5.65" Feb 2005 BPEL 7.1" NBPEL 5.8" BPFSL 6.9" EG 5.8" Feb 2006 BPEL 7.3" NBPEL 5.8" BPFSL 7.6" EG 5.85" Feb 2007 BPEL 7.3" NBPEL 5.8" BPFSL 7.5" EG 5.9"

Hi Secjay:
Manual pumping sucks, so I prefer mouth suction too.
I used to suck strongly, up to the limit of pain, until the day when I bought a vacuometer… I realized I was three times! (THREE TIMES) above the advisable limit of 5 HG. Mouth is quite powerful, isn’t it? Yes. I could verify this.
Since then, when I pump, I stay about 6-8 HG with no problem at all (for 5-10 min) and, just for fun, I peak to 10-12 HG for a few seconds….(Yes, I like feeling BIG).

Hope this helps,


Fefo,

No para la exhibicíón, ni la contemplación, la quiero grande para la acción.

Ahora 19 x 15 (antes 17 x 12)

I was thinking more along the lines of a girl jelqing you off with her mouth vs her hand. What a PE session that would be. Any volunteers to test the efficency of that? Don’t be shy now. ;) I call 1st test subject.


Progress Tracking As of 01/01/05 : 6.5 BPEL x 5.25 G As of 04/08/05 : 6.75 BPEL x 5.25 G Short Term Goal : 7 BPEL Long Term Goal : When a trip to china and getting on the great wall means hopping on my member

Yes JumboDog, I suppose that whether it be hand or mouth, you could call the activity “pumping” :)

mbuc, your idea is actually a pretty good one although I will somehow have to get the entire cylinder minus the tubing filled with water, with my package in there ready to go.

Also, measuring how far the water climbs in the tube will have to account for the initial expansion of my dick (because when you measure pressure inside the cylinder, you’re really measuring the pressure of the water AFTER your dick has displaced it’s volume of water from the cylinder, right?)

On second thoughts, I’m not sure I’ll bother trying to work it out. Thanks anyway ;)

My opinion:

In the pumping I’ve done I’ve always sucked on the hose to draw vacuum. I also have a gauge plumbed in.

I have a hard time believing some of the vacuum claims some have posted here. I think their gauges are either totally screwed, they are reading them wrong, or they misunderstand the units. That or their dicks are a hell of a lot tougher than mine.

4.5 - 5” Hg in air is plenty for me. Even then, I wrap below the head to prevent a donut. I can tolerate higher vacuum under water than in air. Not sure why. I think I wrote somewhere before I thought 5” in water felt like about like 3-4” in air. 6” in water was my top end for a set.

Guys claiming they regularly pump at 10”, 15”, 20” or whatever baffle me. I have sucked up to a true 10” Hg or so briefly to see what it was like. All I can say is no fucking way would I hold that for any length of time.

Sec, you’re probably fine going by feel.

Awesome. Time to go jump in the tub, dudes! :D

This wintery weather is a great excuse to sit in there for hours as well ;)

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