Flanged Cylinder?

Not sure if this is threadworthy, but I didn’t find a lot through the search function, so I thought I’d give it a try. I have been on and off with PE for awhile. I have started pumping again recently. I have been busing a homemade cylinder with a gauge hand pump. As I have worked my way up to longer sessions at higher pressures, I am running into a problem. Even after using plastic dip on the end of the cylinder, it still bites into my pubic bone causing some discomfort after multiple sessions. I am thinking the only solution is to get a professionally made cylinder with a flange. I am worried about the biting in causing ligament or blood vessel damage, which I have read can occur. I am thinking one of those Kaplan tubes might be okay, but could use advice.

Thanks!

If you want a really comfortable cylinder buy one from lapdist with the flanged bottom: All Products | LA Pump

Find your size using this size chart: Selecting Your Cylinder Size

I have to agree with gprent on that one. I had way to much PE stuff and pitched my kaplan 2” and 2.25” tubes because I never used them after getting my Lapdist tubes.

I have used many different cylinders with a gasket of silicone or rubber, they didn’t last very long

Then I bought a flange cylinder , 2 inch inside diameter , 9 inches long

The flange works fine for me, no more gaskets , use even petroleum jelly, no problem

Have grown permanently from 6 inches to 8.5 in six months

Wow those are really impressive gains for the time being, can you share your detailed routine?

I’m a big fan of pumping too!

I guess it’s an individual thing, but the cylinder I have is flanged, and the resulting opening is smaller than the inside diameter of the rest of the cylinder. So my 2” cylinder has an opening at the flange of only 1.75”. And I don’t like that. Maybe the idea is to create a better seal, but it just means the cylinder is bigger than it really should be. If I were buying again, I would get one where the flange extends from the inside wall of the cylinder outwards, but not inwards, so the inside diameter is the same at every point.

If you want to modify your existing cylinder, I think the solution is epoxy putty. You kneed the two sticks together, then mold it into place. With a little water, you can smooth it out.

LAPump makes a great flanged base cylinder without encroaching on the inside diameter.