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Cylinder sizing issue

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Cylinder sizing issue

I’ve just started to get into pumping, and I’ve noticed what might be a problem. If I insert my penis into the cylinder while flaccid, I have no problems. However, if I try to insert it while hard, my penis is too wide to fit. Here are my stats: 5.2” midshaft girth, 4.5” base girth, almost 2” wide at the widest part. The width is what prevents insertion while erect. I’m using a 1.75” diameter cylinder.

Should I buy a 2” flared cylinder? I don’t want to have my balls sucked into the cylinder, but I don’t want to constrict my penis while pumping, either.

How much of the cylinder do you ‘pack’ if you insert your penis into the cylinder while flaccid or partially erect, and then pump up?

Where is your widest point? Not at the base, I’m guessing.


For Lampwick, becoming hung like a donkey was the result of a total commitment.

I usually pack from about midshaft to the head, just along the sides of the cylinder. My widest point is just about an inch from the head. I’m a classic baseball bat shape.

Did you buy the 1.75 cylinder because that’s what the “Selecting Your Cylinder Size” chart told you? I’m guessing that when gprent made that chart, he assumed that base girth was the largest for everybody.

Since my base girth is only 4.4, I was supposed to get a 1.5 cylinder. I’m so glad I didn’t. Even with a 1.75 cylinder the corona of my penis presses up against the tube. I can’t imagine what trouble I’d have with a 1.5 tube.

You should definitely buy a 2 inch cylinder. Your penis needs room to expand in the tube. If you can’t even stick in your erect penis then what you have is useless to you.

Originally Posted by Maxtro

Did you buy the 1.75 cylinder because that’s what the “Selecting Your Cylinder Size” chart told you?

That’s exactly why I purchased the 1.75” cylinder. Also, the tales of painful experiences with testicles being sucked into cylinders were also a factor.

So, should I just go ahead an order a 2” cylinder then? It’d be a shame for the 1.75” to go to waste, but I suppose I can still use it for length work or something. If I do go for a larger cylinder, should I get a flared or cushioned cylinder to help keep my testicles out of the tube? I’m leaning towards Lapdist just because their pumps are so cheap. My 1.75” was from Bostonpump and it took almost a month for me to get it! I’d rather deal with someone else who ships faster.

I have both a 1.75 round and 2.00 round from LAPDIST. My base is depending on EQ from 5.6 to 5.9. My mid girth is just around 5 and doesn’t seem to want to budge although my base girth keeps increasing. I’d love to get to a solid 5.2 mid girth by the way. Anyway, in my experience, a 1.75 elliptical tube from lapdist might be your best bet. It is 2 inches wide by 1.75 top to bottom. The girth(circmference) is 5.9 inches. It should accomodate your width and not cause testicle problems. Even with my base girth I occasionally feel a little testicle pressure because it will apply pressure to the veins that come up from your testicles. I never had a testicle being sucked up. I think if your base girth is 4.5 you could suck up a ball with a 2 inch tube. The inner girth of a 2 inch tube is about 6.3 inches. Unfortunately pumping is kind of perfect for the pyramid dick and not as much for the baseball bat. I think clamping helped build my base so that might help you.

I don’t have a lot of experience with pumping yet but, I am a little over 2 inches from just under the head all the way to the base. Girth is a little over 5.5. I went with the 2 1/4 tube and as long as I start holding the tube down firm I don@t have any problems. Don’t know if that helps you but it’s my 2 cents for the day.

I’ve gained over 1 inch going for 2.

Would one of the vets mind commenting on my situation? I’ve been reading about the elliptical cylinders from Vacutech and Lapdist, but it’s so hard to make a decision! I really do NOT want to buy another cylinder only to have it not fit well.

The elliptical cylinders are 1/8 inch longer across the widest measurement than the stated diameter. For example. the 2” cylinder is 2” across the short part of the opening and 2-1/8” across the longest part. Accordingly, the diameter is equivalent to 2.125”.

Go for the size that best fits your penis. There are several easy steps you can take to prevent your balls from being sucked in. Do a search or ask for advice if you can’t find any info.

I still use my old cylinder that I now pack completely. I use it at least once a week because it feels good when I completely fill the tube with my shaft. Once I remove my shaft from the smaller packed cylinder, it feels and looks the same as when I remove my shaft from the larger cylinder. I am sure my wife can’t feel the difference either.

Also, I have noticed that both the corona of my glans and the base of my penis also pack the cylinder. The base must be non-penile skin being sucked into the cylinder. I hope that gives a better idea of how the cylinder is fitting my penis. As always, any input is appreciated.

If you have an upward curve I would advise against getting an oval shaped cylinder. My glans gets smashed pretty bad. I mostly use the circular tube.

Also, if your shaft is more circular or equilateral triangle shaped rather than oval or large based triangle shaped, you should get the circular cylinder.

Originally Posted by EJ
If you have an upward curve I would advise against getting an oval shaped cylinder. My glans gets smashed pretty bad. I mostly use the circular tube.

But if you get an oval cylinder and orient it so that there’s more room for the curve because of the wider aspect of the oval, isn’t that better than a circular tube? That is, when you look down at it you see the thinner aspect of the oval. The tube’s ‘wide-mouth’ is only visible from the side, so that it can help accommodate the upward curve.

Originally Posted by mmmmmk
But if you get an oval cylinder and orient it so that there’s more room for the curve because of the wider aspect of the oval, isn’t that better than a circular tube? That is, when you look down at it you see the thinner aspect of the oval. The tube’s ‘wide-mouth’ is only visible from the side, so that it can help accommodate the upward curve.

Yes, you’re right and I’ve done that before. Problem is the narrow side is so narrow that I do not get any girth expansion and no extra length expansion, so to me, there really is no benefit.

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