Vacuum Pumping 101

I also do this, I recently broke my “pump packed long duration” test and the tip of my cock hit the 16.5cm / 6.5” mark in the bone pressed tube.
If only my cock wasn’t a full 1.5” less without the tube. Patience is a virtue.

Sorry guys, one last post.

Can anyone identify the discolouration or strange bubble effect inside the perspex material of my tube?
I am using vacu-tech tubes and both of them exhibit this, even my 2” tube which has been used less than 10 times!?
Both the inside and the outside are completely perfectly smooth to the finger, I’ve attempted soap and even solvents but I believe the damage may infact be inside the tube material itself?

It doesn’t harm the tube in any way for pumping but I’m sure as most of you know, the appeal of pumping is also looking at it in such a huge state.
Does anyone know what would have caused this and how I can either fix it or avoid it with future tubes?

Thanks.

Why are you apologising for posting? Good posts. btw, we very rarely delete posts, it generally has to be spam or a duplicate of another recent post.

So I take it your tube didn’t look like this when they were new. What kind of lube do you use? Have you ever heated your tubes? I would think that if it happened after you received them you should have some idea how it happened.

Have you asked and sent the pictures to the guys from vacutech?

Just got my pump in and tried it for the first time. A couple of questions:

1. Is it normal to pump and be below your BPEL? I was around my NBPEL and figured my fat pad was preventing more size in the tube.

2. I didn’t have the full hang “for a few hours” after I pumped. Is this normal for a first time pumper?

This is new to me. I plan on following avocet’s routine as best I can. Tomorrow will be better as I should be less rushed and more likely to have a good chance to really focus on keeping steady pressure and run through the full routine rested.

Did you enter the tube erect, semi erect or flaccid? What hg did you pump at?

Semi-erect, keeping it between 3g and 5g.

1. I generally pump below my BPEL at those pressures. I can really only exceed my BPEL when I get above 10mm/hg. The other thing to consider is whether or not you are packing the tube - if you aren’t packing it, you might not expect it to pull longitudinally (length) and instead expand outwards (girth). Another thing to consider is whether the measuring sticker on the tube (if you have one of these), goes all the way to the base. On my cylinder (LeLuv), that beveled edge is not included and essentially subtracts 1/4” from my in-tube measurement on the tape. You would also have to press the cylinder down to get a more accurate measurement, but the fat might not disperse the same way it would with a ruler.

2. If you’re pumping like Avocet’s routine, for 10 minutes or so, you probably won’t have the full hang experience until you start getting into the longer sessions.

Didn’t look like that when new.
Lube has always been regular water based cheap stuff, no abrasives or anything. Tubes were never heated, I did at one point briefly use a rice sock, it wasn’t particularly hot.
Tubes are I admit near 10 years old, however the issue has been on them for at least 4 or 5.

I guess no one else has this problem?

Well, literally a decade ago I got them so,…. unlikely they would support it? Also it still functions.

Looks like a mystery that will go unsolved. As long as they hold pressure, keep on pumping!

You’re just a customer gently asking a question, they may have come across the same problem themselves.

Same thing happened to me.

Pumped on Monday. Went to pump today and could not get a seal. Figured out it was at the connector. Noticed the O ring was not in the right spot. Went to move it and it it snapped. I sent Leluv a message and they are sending a replacement. I am going to find one local in the meantime.

Ace Hardware or auto parts stores carry O-rings. This one is 5/16” X 3/16” X 1/16”.

Is there a cheap alternative to the silicone base that’s $19 US from LA? I wouldn’t mind something which doesn’t press the bone so hard but being in another country, shipping won’t be fun.