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Unread postPosted: Sun Dec 23, 2007 6:59 am
jackssmirkingrevenge wrote:
ALIHISGREAT wrote:this is driving me insane :x i just can't find a supplier in the uk :x

pikey camp site?

:lol: i will be sure to take one of my cannons with me though because things might get interesting :D

Unread postPosted: Sat Feb 23, 2008 2:57 am
Author: Lentamentalisk
so sorry to bump, but you said the thing weighed 7kg... Were you being serious or jesting? Would it theoretically be usable in a backpack setup with a storage tank and battery on my back, or is it just too heavy?

Unread postPosted: Sat Feb 23, 2008 3:34 am
Author: Carlman
Lentamentalisk wrote:so sorry to bump, but you said the thing weighed 7kg... Were you being serious or jesting? Would it theoretically be usable in a backpack setup with a storage tank and battery on my back, or is it just too heavy?

hmm a 240v battery...

Unread postPosted: Sat Feb 23, 2008 11:45 am
yeah you need a 220V or 110V battery (depending where you live) :D

There are different types of these compressors becasue they are used for many appliances.. As a result their dimmensions, weight and flow might vary... you can expect that most fridge/refrigerator compressor have specs more less the same as mine.
there are more powerful compressors as well, for example those used for air conditioning or in shops/stores

I've just read that their air inlet can be used as a suction pump, so it is quite versatile (esspecially usefull for these people --> ... 12563.html :D )

some pics showing more of these pumps + one full equiped compressor with a tank, regulator, pressure switch etc. (not mine)...

Unread postPosted: Sat Feb 23, 2008 1:38 pm
Author: Hotwired
Second picture down even has a filter/regulator on it.

Nice neat package mounted on a board there.

Unread postPosted: Sat Feb 23, 2008 3:42 pm
Author: Lentamentalisk
oh right, its an AC pump... too bad, that would be totally savage having a compressor on your back. Anyways, really great find, and a nice cheap way to make your own high pressure compressor with storage tank and such.

Also because of it compressing from an inlet tube rather than the ambient air, it can be used in an electrolysis machine to compress your gasses into a hybrid... Kick Ass!

Unread postPosted: Wed Feb 27, 2008 5:10 am
Author: Killjoy
All you need is a battery and a power inverter (preferably 2000w or high), and your good to go. You probably could do it for 150 dollars, btu the flow on this from what I hear is pretty low.

I like the electrolysis compressing idea, thanks for the inspiration.

Unread postPosted: Thu Feb 28, 2008 4:03 pm
Author: Brian the brain
I want to thank POLAND SPUD for this idea!!

( cheer everyone!!)

I got an old fridge today and have succesfully built a 35 bar compressor from it!!I used a 1/4" 3 way bv to fill and bleed.It has a nut on it so it can be mounted on a board. :D

Conveniently, the compressor has a plate into wich it fits perfectly.All ad-ons are securely mounted.fortunately I had all fittings needed and some hydraulic hoses too.

It looks like hell though, cause of all the rust. :cry: I'll build a box around it, for both protection and looks, tomorrow.I'll post some pics too.
Connecting to the pump was a bit hard, but I solved it by using a piece of rubber hose in an 8mm compression fitting.It holds 35 bar and then I still can't pull it off.
No more ( stirrup) pumping for me!!( although I had just finished one..)
:D It's even easier to build a compressor like this than it is building a stirrup pump!
Nice and quiet, as he suggested.I totally love this thing!
And yes, the( slow, but sure) 35 bar is now official!I just need to get a switch, so I don't have to unplug it each time.
It will be great for filling my PB tank to 35 bar, to use on the MMG.

Thanks a lot!!

Unread postPosted: Thu Feb 28, 2008 4:52 pm
you're welcome :D I knew it was capable of 35 Bar but I didn't even have a gauge for pressures above 25 BAR :?

since you are already building a box for the compressor you might consider cutting a small hole in it for a computer fan - for cooling.

don't forget to add several cubic cm of oil every week or so (if you use it a lot )

Unread postPosted: Sat Mar 01, 2008 11:37 am
Author: Brian the brain
Now you tell me.. :shock: .Where does the oil go?
What kind of oil can I put in it?
So far I've only mounted it on a board.I figured encasing it completely might give a problem due to the heat produced.

I might add that a sawed-off mark 2 performs quite well at 35 bar..hehehe

The meanest bang I ever heard!!!
And Overkill with it's new barrel renders a guitar quite useless at 20 bar heheh

Unread postPosted: Sat Mar 01, 2008 12:32 pm
an oil mist is slowly being released with compressed air... so it has to be replaced... you just have to add several cubic cm of oil is to the air intake - use small syringe to do it...
you can use mineral oil, engine oil but there is also a special oil for compressors...

you may add an oil filter to the air output (either buy one or make one yourself) - it is up to you... I don't have an oil filter and I haven't noticed any problems with my gun...
you can stop some of the oil in a quite simple way - make sure that at least 15 cm of the air hose that is connected to the compressor is vertical...

you can build a box with in-built computer fan... you know just like computer cases are built... ... s/fan.html

Unread postPosted: Thu Mar 06, 2008 11:00 pm
Author: chartreusesnot
This is great, my mom just got a nice Revco fridge-freezer hardly used from a lab auction at her old work... for 50 bucks! We were trying to think of something to do with it...
Why would you need to oil it? in the fridge does it get oiled? can't remember anyone oiling their fridge... Or is freon like a lubricant?

Unread postPosted: Fri Mar 07, 2008 12:48 am
normaly it doesn't have to be oiled becasue in fridges freon and a little of oil circulates throught those small pipes.... (oil that escapes the pump through air exhaust returns through the air input)

Unread postPosted: Fri Mar 07, 2008 12:52 am
Author: Gippeto
In the fridge, the oil is contained, any that gets into the freon just recirculates back. It's a closed system.

When using it for an air compressor, a small amount of oil vapour goes out with the air.

Like a car using oil, if you don't add oil from time to time, bad things can, and will happen. :wink:

Edit: Second yet again!

Unread postPosted: Wed Apr 09, 2008 9:25 am
Author: Mitchza89
Hmmm something like this is definately on the cards. What can I say, I'm a mad dutchman just like BTB :D (proud of it too might I add!) My homemade stirrup pump is great but I'm gonna need something that's a bit easier on the body to fill this marble gun I'm planning on building. I don't wanna have to spent 20min each time I pump to get the gun up to a respectable pressure...

How often does the oil need to be replaced into the compressor? I'm worried that the chamber of my gun will get layers of sticky oil over time :?