PE4F Pumping at Full Vacuum

:_pump: Agreed.

I’m wondering though. I hold 20 seconds, pulse for 10. Then get out of the tube, jelq and make sure i’m hard again before I go back in. Is it worthwhile adding anything else or should this be sufficient to gain with. The expansion in the tube is great, just not sure whether i’ll gain.

It’s indeed a bit of a paradox, that full vacuum pressure can seem like too gentle a form of PE to induce gains, but I know exactly where you’re coming from. With the right technique, it seems as if very little damage is being done - especially when compared to something like clamping. Whether or not it’s enough to yield gains is going to be unique to each individual. It certainly was for PEforFun. I believe it is for me as well, albeit at a much slower rate.

If you do add more, you’ll probably find it doesn’t take much to “tip the balance” into the zone where you feel like you’ve got a good workout. There are a few ways to do it. One is doing more intense exercises between the sets, as you mentioned. Another is doing other forms of PE before the pump session. And finally, there is doing 2-a-days, by doing a pump session in the morning, and another 8+ hours later when the fluid has mostly drained and the skin has recovered.

I’d suggest waiting a while longer to see if it yields gains by itself. Despite the sense that it’s not causing damage, it is most certainly an extreme force level.

Yeah, there’s barely any pain at all. At best the tip of the glans. Maybe I should hook up a gauge to find out it’s actually pulling full vacuum.

I’ll stick to experimenting with on/of times for now, with fluid buildup as an indicator. Which is barely there over a 20 minute set and disappears after showering.

I really wish you’d quoted the information on his profile page now that the database is down. That had most of the base nuts and bolts of his actual cycling routine.

What are you wondering about specifically? I think most of what he had in his routine section was also scattered about his posts.

I know he would do 20-25 minute sessions, pulling out to shake out and re-apply lube about 4-5 times per session. He would pulse pressure for 5-10 seconds at a time, gradually increasing the pressure throughout the workout until it was full vacuum. He didn’t use porn or stimulate an erection, but said he found the pulse pressure mildly arousing.

How do you increase pressure? I figure covering the safety hole is auto max isn’t it?

Yeah that’s right. He would just partially cover the hole for a lower vacuum. My second pump has an isolation valve that I can use to do it. Another option is to rig the hosing with an isolation valve.

Is there a particular one you use? Also, looking at these CFM pumps I don’t see where the hosing is hooked. Also, does it get direct or use a male or female connector?

I use a JBI DV-85N 3 CFM. I had a Robinair 15150 1.5 CFM first, but it overheated. Robinair is a general small electronics manufacturer. So I replaced it with a JBI which specializes in HVAC pumps, and their platinum series has the isolation valve.

The cheap brands would probably tend to work much longer than mine did, and I just had a bad unit - otherwise they’d have a much worse rep online. So if you get a pump without an isolation valve (which is the case for most models) you can just take two pieces of hosing, and connect them with adapters to a valve between the pump and the tube. And there’s a $15 isolation valve.

The pumps have intake ports where you hook up the hosing, some of them come with multiple sizes. I bought a female barbed insert adapter at the hardware store, and was ready to go.

Alright. What size hole/drill bit did you use for your release hole?

I’ll link the things I’m looking at when I’m on my computer with those tabs open.

About a 1/8” diameter hole.

I was looking at a 4CFM pump for $65 on Ebay, a couple links away from what PE4F originally linked, math says a slightly larger hole would be alright? Maybe 1/4”?

Idea is to modify a tube I have, get a pressure gauge and calibrate it attached to my tubing (by hooking it to my current setup and seeing if it and the gauge on the pump read the same when pressured) and use the larger hole to have a lower resting pressure (as I am new and cautious) with greater contrast in pressure at max.

Your thoughts?

I’d advise lower CFM if you’re going for cautious. I preferred the slower pull of the 1.5 CFM over the 3 CFM, but the 3 CFM can do faster cycles too, so they both have their positives. They’re all going to pull a deep vacuum, it’s just whether it takes 1 second or 3 seconds. I hope you’ll post your findings from the gauge readings. I’m curious what the actual times are like. It sure feels like about 2 seconds though.

Lower resting pressure is good, increases circulation. All my release valve holes are 1/8” or just a hair less. The only downside to widening them is increased force on your thumb, which has never bothered me at 1/8”. You can always widen the hole, but can never decrease its size. I’d start at 1/8” and increase by 1/16” at a time as necessary. 3/16” is about double the area of 1/8” and then 1/4” is quadruple the area of 1/8”. So small increases should make a big difference.

I’ll keep that in mind. If 1.5CFM is a more cautious approach I’ll start there. Trick remains how efficient is each CFM but too fast I’m sure has a downside. Too slow, I doubt has one by comparison.

Appreciating this discourse and this thread. As these are questions many of us are afraid to ask.