Thunder's Place

The big penis and mens' sexual health source, increasing penis size around the world.

Vacuum Pumping 101

Originally Posted by odotsal
Just finished reading through this entire thread. Never doing that again. For new pumpers, most of your questions will be answered by reading page 1. Happy pumping.

I got about 10 pages in and noticed the same. The best jewels are in the beginning!

Progress

So I’ve been at this about a month.
I have to admit I love my bigger penis.
Not on a strict regimen. I do a ten minute warm up with a heating pad. Then pumping per the guidelines.
Took 4 days off everything and did 2x15 minutes at 5”hg, with a good massage in between. Ended up with a wet finish at the end. But I had great erections all night after that.
I was marveling at my hang today.
The time off is important.
I’m thinking 1 on 2 off for the next couple weeks.

Starting BPEL 5.875”
Now BPEL 6.5”

Well it took about a week but I finally gleaned through this whole thread. Lots of good info, and lots of the same questions being asked over and over.

The one that I never saw answered correctly is the matter of pressure measurements. There are two types of pressure measurements, absolute (measures against the vacuum of space, so there is nothing lower than 0 absolute), or gauge pressure. With gauge pressure 0 is the pressure at sea level during “typical” weather. The vacuum readings that people quote are gauge pressure. Now there are dozens of units used to measure pressure. This is frustrating as hell as an engineer because people use different ones for different things (I wish the US would just pull the band-aid off and switch to metric completely like every other sane country, but that’s another gripe).

1 atmosphere = 1.013 bar (apparently they didn’t use the same reference point, so it isn’t just 1) = 29.9 in-Hg = 14.7 psi = 101.3 kPa.

So if you are looking for 5 in-Hg = 2.46 psi = 127 mmHg (5*25.4) = 0.169bar = 16.9 kPa. In this case these are all vacuum readings, or that much below 1 atmosphere. So if someone makes the mistake of pumping to 5 psi instead of 5 in-Hg, that is really 10.2 in-Hg.

Ok, back to pumping.

My experience: started PE almost a year ago. Got a Leluv cylinder and harbor freight pump 6 months ago. Started slowly and had trouble maintaining a seal. I got a 1.75” tube and am a bit over 4.5”MSEG. Anyway, the pump only had about 1/4” travel on the trigger (there was a stopper there) and I had to work like hell to get the pressure down. Then one day the stopper fell off and suddenly after a few squeezes I was up to about 10”Hg - wow. Seal held and it felt pretty good. I hadn’t really looked at this thread before so didn’t know whether 10 was high or not. Anyway, went pretty short duration for a while to be safe and worked up to 10 minute sessions.

The only negative PI I get from 3 10 minute sessions at 10” is the donut, which is gone by the next day. I get a little pinch at the base to start if I don’t use enough lube, but I can generally cycle the pressure once or twice and that goes away. I have been doing 3 sets to 7” lately, but still get a small donut even if I wrap it with a self adhesive ace wrap (which I hate to do as that makes it hurt a bit). So my question is, what other methods do people do to avoid the donut? I read something about silicon sleeves but couldn’t find anything like that in a quick google search. I generally jelque a bit between sets and afterwords, then sometimes wear a ring for a few hours after.

My schedule is pretty random now needing privacy from the wife & kids so it’s hard to know how much it is helping. The couple of times I have had sex on the day of a good pumping session my wife has mentioned how good it felt, so I may have to come clean to her soon. She gets a bit funny about things like this so not sure what the reaction will be.

Thanks for sharing your experience, I believe we all new pumpers go thru the same.

Congrats

Am I Doing This Right? My Routine

I have an electric pump. Do you leave it running the entire 10 mins?
I’m at the lowest setting
On my 2nd week
I’m doing it every other day
My goal is a firmer erection
I’m already a decent size 7” length, 6.5” around but if I can go up to 8”, that’ll be the icing on the cake

1 leave it running until I get a nice firm erection, on the lowest setting. It’s really hard, but not painful.

I feel more pressure on my pelvic bone.

I leave it in the cylinder for about 10mins, occasionally turning on the pump if I feel the pressure is letting up a little.

I take it out and jeliq for 5-10mins

Am I suppose to leave the pump running the entire time of my 10 minute session. Or am I suppose to turn it off when I get a boner.

Pumping TipS?

Quick question, when you all are done pumping, do you release all of the pumps pressure then take off the cylinder, or do you all just take out your pumped erection without releasing too much pressure?

I jut release all of the pressure and slowly slide it out.

Just bought a pump for the first time and looking forward seeing what gains I can get from it. Really looking for extra length when flaccid.


Dcla

Starting: 8th Nov 2018: BPEL 5 1/4; MSEG 4 3/8; BPFL 3 5/8; MSFG 3 7/8

Originally Posted by dcla
Just bought a pump for the first time and looking forward seeing what gains I can get from it. Really looking for extra length when flaccid.

You’re in luck, my friend. Flaccid length gains are the quickest and easiest to come by.

Check out the beginners routine as well. It should help quite a bit.


Start 11/30/17: 6” BPEL, 4.25" MSEG - My Progress Report

Latest 1/29/20: 7" BPEL, 4.75" MSEG - My Progress Photos

Originally Posted by lifestyle
You’re in luck, my friend. Flaccid length gains are the quickest and easiest to come by.

Check out the beginners routine as well. It should help quite a bit.

Good to know. Yes I’m going to start with that. Just done my first session and feeling positive. I had an issue to start with when one of my balls started getting sucked in (turkey neck sac after getting cut) but popped a ring round than to keep them back and all good. I was surprised that when I took my penis out after it wasn’t rock hard, just like a very engorged flaccid.


Dcla

Starting: 8th Nov 2018: BPEL 5 1/4; MSEG 4 3/8; BPFL 3 5/8; MSFG 3 7/8

I would love to know how many pounds, grams or kilos of pull at certain Hg’s. I think someone may

have calculated it years ago but I can’t find it anymore. We have a lot of super smart people here at Thunders.

Check this out:

Originally Posted by ErnieBanks
Converting your numbers to pounds: At 30 PSI you calculate a force of 5.28 lbs (2.4 kg x 2.2 lbs/kg) in a 2 inch tube. At 5 PSI, you calculate a force of 0.9 lbs in a 2 inch tube. I don’t think that’s right.

First, let’s convert inches of mercury to pounds of force per square inch. 30” hg is a perfect vacuum, and atmospheric pressure is 14.7 pounds per square inch. So at 30” hg, you’d have 14.7 PSI. For another way to check on that, you can go here: xxx.convertunits.com/from/in+Hg/to/psi and enter the inches of mercury and it will tell you how many PSI it works out to. For example, 29” hg is 14.2 PSI, or 5” HG is 2.5 PSI.

From geometry class, recall that the area of a circle is pi * r * r, where pi = 3.1416 and r = the radius of the circle. For a 2” diameter tube, the radius is 1” and the cross sectional area of the tube is 3.1416 square inches (3.1416 * 1 * 1).

The force on your penis is the number of pounds per square inch times the number of square inches. For a perfect vacuum and no friction in the tube:

14.7 PSI x 3.1416 square inches = 46 pounds of force. Your number is 5.28 pounds of force. If you use a bigger tube, the force on your penis goes up as the square of the radius of the tube.

Another example: if you have been using 5” hg in a 2” tube, you’ve been using 7.8 pounds of force. Your number is 0.9 pounds of force.

As a practical matter, we don’t quite reach a perfect vacuum, and there is some friction in the tube. So we probably don’t quite reach 46 pounds of force with the PE4F technique. But it is still very, very high.


Start 6.8” x 4.7” (4.9" BEG)

Latest 8.2” x 5.1” (5.3" BEG)

My pictures

Great! Thanks!

Can't maintain erection after Pump session

Anyone else unable to maintain erection after pumping? As soon as I release the vacuum I lose my erection almost completely. I’m following the pumping 101 guide. Am I doing something wrong?

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