Is the cylinder too big?

Yes, packing the tube would be ideal, but it honestly feels like my glans is gonna explode in there before the shaft starts getting any kind of good expansion! Surely someone else who pumps with a mushroom-shaped unit has figured out the solution to this?

The tube I have uses a silicone base ring as well.

It’ll reduce the pressure you feel by squeezing it slightly. It’ll also keep your glans from growing faster than your shaft.

I may be wrong here, but I see no point in pumping with pressure that’s lower than your systolic blood pressure. The only thing I ever got out of that was edema, and that’s not the kind of expansion I’m after. I’d rather clamp than pump at anything less than -120mmHg (~-5”). Cycling pressure from low (-5 to -7”) to high (-10 to -12”) has done more for me in the last 2 months than the previous 4 months of low pressure pumping (which got me no real gains at all), or even the year before that of manual exercises. All with only the slightest hint of edema. 1/8”x1/16” doesn’t sound like much, but gaining that much in less than two months after years of PE…. yeah, I’ll take that all day every day.

Every exercise is different for each individual. Sometimes you run into one that just isn’t for you. I tried hanging at one point. My shaft is (well, was) bigger than my head, so after trying all I could think of, I finally just decided hanging isn’t for me. If your glans can’t handle the pressure of pumping above systolic pressure, and you can’t find a way around the problem, it might just not be your thing.

I’d try wrapping the glans to give it some relief from the vacuum pressure. If that doesn’t help, then a glans cap won’t either, and it might just be time to try a different main exercise

I do need to detail some caveats to my last post:

1) I don’t recommend jumping right in to pulsing at higher pressure. It took me several weeks to find my optimal pressure, adding .5”-1”Hg every week and monitoring PIs very closely. I also use a particular method for the pulses that’s designed to work with the characteristics of collagenous tissue instead of trying to work against it.

2) I use pumping as a standalone main exercise. I don’t recommend my method if you’re doing any other intense exercises. I hit 100 jelqs, pump for 2-4 sets of five minutes each with a few light jelqs in between sets, and then finish off with a few minutes of edging. Takes 30-40 minutes total, twice a day. Sometimes I substitute with a manual routine because of privacy issues, but that’s it.

3) I know my routine goes against conventional pumping wisdom. I tried conventional pumping at low pressure, and saw no gains for months. CW also says that pumping works well with other intense exercises. I don’t have the time or privacy for that.

If anyone wants to try it, I’ll put up a post in the pumping forum with all the minute details and a progressive routine that will guide you to your optimal pressures over a series of weeks.

Thanks FixerUpper, I do something similar. I like to get in the pump hard and go hard. Recently I started going up to -20hg for 10 seconds slowly drop to -15hg for 30 seconds to 1 min. Then I drop to -10hg for a couple of minutes. Finally I drop off to -6-7hg for 30 minutes. I take it out and wake it up. Then I do my second set. This is only when I have the time and I don’t plan on needing to use my cock.

This is definitely an advanced technique. Please don’t try unless you are well seasoned in pumping.

Damn. -12”Hg is my limit. Past that, I get horrible petechiae.

I settle in at -7. Take five seconds to pump up to -12, and hold for 5 seconds. Drop to -7 and hold for five seconds. I do four short pulses that way, and then switch to long pulses where I hold at -12 for ten seconds and drop to -7 for 45 seconds.

Four short pulses, four long pulses, and then 25 light jelqs before my next set.

I started song this with -3” and -7”Hg and built up from there

So my question is similar as well, I’m getting my first pump soon and looked at the sizing charts I’m 6.5 EG and was curious if a 2.50 chamber would be the right choice, I’m trying to avoid all chances for an error or injury.

Thanks.

A 2.5” cylinder has an inside circumference of 7.85”. A 2.25” is just over 7”. Those charts always seem to recommend a size larger than what you really need. For reference, at 5.75” EG, the chart recommended 2.25, and I had to go back and order a 2” (which is probably why they overestimate).

So I had to measure again, so I’m 6” EG at the base, I was going to get the leluv pump from Amazon. Which would be a good starter, I want something for length and girth I’m 6.6 BPEL.