A Homemade Pump. Yes a Pump, not a cylinder.

This sounds similar to condom pumping that was being tried awhile back. Have you tried to make a condom out of the Cyberskin? Do they sell the Cyberskin by itself?

I haven’t tried to tie off the end to make a condom out of it. I kind of like the feeling on my head when it pops out of the end of the tube. Yesterday I put a second piece of tubing inside the first to make a bit stronger and with proper vacuum and on/off times it worked very similar to my Venus 2000 which strokes the penis and it caused an intense orgasm!

The tubing (probably wrong term) can be bought from Sybian, the company I got the Venus 2000 from. They call it liner material. It comes in different diameters by 30” long for $10.

Here’s a link to where the tubing is:

This is the main page for the Venus 2000 (an expensive toy, but lots of fun!)

Thanks for the tubing link. I’ve got some interesting ideas on how to use it. :D

OK, Xaxxat and Electron…

You guys have been using this for a while….what has happened growth wise for you?

Here are a few pictures of my pump using the Devilbis aspirator.

Hi!

After making some good pumping experiences with a low-budget-pump, I wanna try something bigger. I thought about building an electric pump on my own like described in this thread. But I’m wondering if such an expensive vaccum pump like electron’s is really necessary.What’s about an aquarium pump like this one here:

Or for the not german speakers, I have an example pump with english describtion:

What do you think? Are theses pumps to weak or can I use them?

Greetings
Xthealmightyx

These pumps have very low volumetric flow rate, which means it will take a while to pull a vacuum down to 5-6” Hg. This isn’t exactly desirable for what you’re wanting with the suck/release cycle, but will work just at a slower rate.

I have a small Gast pump I bought on ebay for around $50 or so and it works great, I think it is max 4 amps.

Thanks for your help! I think you are right. I have read in another PE Forum about these pumps, but I also thought it would be better to buy a more powerful one. So I bought this pump:

It works great. But the created vacuum is a bit too strong. At the moment I’m searching for something to regulate the vacuum. Perhaps I should use a proportional valve? What do you think?

Greetings
Xthealmightyx

Basically what most pressure and vacuum regulators do is open up a intentional leak. So a simple way to regulate the amount of vacuum the pump draws would be to just insert a small ball-valve that would be open to atmospheric pressure and just open the handle until it seems about right. Lowe’s has some plastic ball valves that have a “push-lock” connection for directly connecting to plastic tubing.

Later

Sounds good. But I don’t now anything about this “Lowe”. Is it a company? Do you have a link?

Greetings
Xthealmightyx

Hello, I was referring to Lowe’s Home improvement warehouse, it’s just a store like Home Depot or Ace hardware with building materials in it. Other places should have them as well, but I know for a fact that Lowes does carry them.

Later

Bringing this back from the dead

Some background on me
Have been pumping for 20+ years
But gathered allot of info from the forum
Ok I have built $15 electric vacuum pump for anyone! $15 electric vacuum pump for anyone!
Works great have a mighty vac hand pump
And a Aspirator ( Vacuum pump )0-22 adjustable vacuum

$15 electric vacuum pump for anyone! Nice quiet works great
Same mighty vac
Aspirator a little noisy but the pulsation from it feel good
I like the idea here of the automatic release

Anyone who is active on here built one of this style pumps?
And did you like how it works
Or what are some opinions on this

Thanks for your replies

Interpuls, ratios, suction time, non-suction time, pulses, vacuum pressure, needle valve, pulsator, ports, pumps,gauges, air compressor, cylinder, vacuum regulator, “T-Fitting”, amperage rating, “CFM”, “DOA”, reducers! Hey! You “Plumbers” know what you are talking about, but maybe there are quite a few of us who do not know what you are talking about. Anybody want to give it a try, to explain in detail just exactly what is going on here? Pictures?

The Mr. Fantastic Pumping

This looks perfect, but too pricey for me. At current rate, that about $250.!

This thread, although 9 years old, has some GREAT ideas in it - thanks to Thunder for keeping these old threads available!!!

The general approach here is to provide a powerful constant vacuum source (the electric vacuum pump), limit the vacuum using a controlled leak, and add a timer that controls a 3-way valve. Post #110 shows some good pics of the setup. This system uses line voltage, relatively expensive parts and might be noisy but is totally possible for Do-It-Yourself guys with basic skills.

Another approach is to cycle the pump on and off based on a pressure switch (The Mr. Fantastic Pump - see The Mr. Fantastic Pumping). The pump is powered on to reach a set vacuum, the pump turns off, a controlled leak bleeds off the vacuum, and the pump turns back on when a set vacuum is reached. This system uses a sophisticated pressure switch, DC voltage, is quiet and commercially available without Do-It-Yourself engineering.

A third design might be of interest to someone with basic mechanical and electrical skills - see attached schematic. This approach uses a timer to turn the pump on/off, a timer to control a valve that bleeds vacuum and a controlled leak to limit maximum vacuum. Parts are readily available on eBay. However, this design does require a bit of knowledge to wire the circuit properly but it is somewhat safe using low voltage DC and certainly safer than line voltage (120VAC or 240VAC). The small DC pump may not last as long at the larger industrial vacuum pumps used in the original designs of this discussion thread but for our purpose they might be good enough.

Here are some examples of what can be done with this design:

Pump up to 5"Hg, hold for 15 seconds, release vacuum for 10 seconds, repeat cycle.

Pump up to 4"Hg, hold for 3 minutes, release vacuum for 1 minute, repeat cycle.

There are many threads here discussing various vacuum levels and hold times so every guy needs to decide for themselves what works best for them and their goals.

Hope this inspires further discussion and development.